Ft Madison Weather Records (USC00133007)
Record envelope, standing records and threshold days for Ft Madison (USC00133007), Iowa, United States, with 134 years of record.
Key Facts for Ft Madison
- Ft Madison (USC00133007) is a weather station in Iowa, United States at 40.62 latitude and -91.33 longitude, 161 m (527 ft) above sea level.
- The station reports from 1893 to 2026, 134 years of record.
- 1,464 records set at Ft Madison still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Ft Madison set a daily record high minimum temperature of 17.8 C (64.0 F) on 11 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Iowa, United States, 40.62 latitude, -91.33 longitude.
- Elevation: 161 m (527 ft).
- Period of record: 1893 to 2026, 134 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
9 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 19.4 C (66.9 F) | -30.6 C (-23.1 F) | 15.0 C (59.0 F) | -22.2 C (-8.0 F) |
| Feb | 22.8 C (73.0 F) | -29.4 C (-20.9 F) | 22.8 C (73.0 F) | -12.8 C (9.0 F) |
| Mar | 31.1 C (88.0 F) | -23.9 C (-11.0 F) | 31.1 C (88.0 F) | -13.3 C (8.1 F) |
| Apr | 33.9 C (93.0 F) | -11.7 C (10.9 F) | 27.8 C (82.0 F) | 1.1 C (34.0 F) |
| May | 35.0 C (95.0 F) | -5.6 C (21.9 F) | 31.7 C (89.1 F) | 3.9 C (39.0 F) |
| Jun | 40.0 C (104.0 F) | 5.0 C (41.0 F) | 32.8 C (91.0 F) | 11.7 C (53.1 F) |
| Jul | 41.7 C (107.1 F) | 8.3 C (46.9 F) | 35.6 C (96.1 F) | 15.6 C (60.1 F) |
| Aug | 40.0 C (104.0 F) | 5.6 C (42.1 F) | 34.4 C (93.9 F) | 12.8 C (55.0 F) |
| Sep | 37.8 C (100.0 F) | -0.6 C (30.9 F) | 36.1 C (97.0 F) | 13.3 C (55.9 F) |
| Oct | 33.3 C (91.9 F) | -9.4 C (15.1 F) | 29.4 C (84.9 F) | 10.6 C (51.1 F) |
| Nov | 27.2 C (81.0 F) | -20.6 C (-5.1 F) | n/a | n/a |
| Dec | 21.1 C (70.0 F) | -28.3 C (-18.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1893 | 22 |
| 1894 | 34 |
| 1895 | 36 |
| 1900 | 9 |
| 1901 | 16 |
| 1902 | 2 |
| 1903 | 2 |
| 1904 | 5 |
| 1908 | 10 |
| 1909 | 8 |
| 1916 | 27 |
| 1918 | 5 |
| 1952 | 7 |
| 1953 | 32 |
| 1954 | 19 |
| 1955 | 13 |
| 1956 | 31 |
| 1957 | 10 |
| 1958 | 15 |
| 1959 | 17 |
| 1960 | 30 |
| 1961 | 5 |
| 1962 | 30 |
| 1963 | 37 |
| 1964 | 31 |
| 1965 | 18 |
| 1966 | 29 |
| 1967 | 20 |
| 1968 | 22 |
| 1969 | 15 |
| 1970 | 24 |
| 1971 | 18 |
| 1972 | 25 |
| 1973 | 9 |
| 1974 | 34 |
| 1975 | 26 |
| 1976 | 26 |
| 1977 | 28 |
| 1978 | 13 |
| 1979 | 21 |
| 1980 | 14 |
| 1981 | 14 |
| 1982 | 23 |
| 1983 | 32 |
| 1984 | 15 |
| 1985 | 17 |
| 1986 | 12 |
| 1987 | 17 |
| 1988 | 16 |
| 1989 | 26 |
| 1990 | 23 |
| 1991 | 25 |
| 1992 | 9 |
| 1993 | 14 |
| 1994 | 9 |
| 1995 | 8 |
| 1996 | 14 |
| 1997 | 11 |
| 1998 | 22 |
| 1999 | 12 |
| 2000 | 20 |
| 2001 | 8 |
| 2002 | 17 |
| 2003 | 9 |
| 2004 | 7 |
| 2005 | 9 |
| 2006 | 22 |
| 2007 | 13 |
| 2008 | 5 |
| 2009 | 11 |
| 2010 | 6 |
| 2011 | 12 |
| 2012 | 34 |
| 2013 | 11 |
| 2014 | 24 |
| 2015 | 12 |
| 2016 | 4 |
| 2017 | 24 |
| 2018 | 16 |
| 2019 | 15 |
| 2020 | 16 |
| 2021 | 10 |
| 2022 | 7 |
| 2023 | 8 |
| 2024 | 7 |
| 2025 | 9 |
| 2026 | 14 |
All-Time Record Progression
5 new records| Date | Kind | Detail |
|---|---|---|
| 1982-01-10 | Record low minimum temperature | Record low minimum temperature -30.6 C (-23.1 F) |
| 1983-12-25 | Record low maximum temperature | Record low maximum temperature -22.2 C (-8.0 F) |
| 1999-01-02 | Record snow depth | Record snow depth 43.2 cm (17.0 in) |
| 2011-02-01 | Record daily snowfall | Record daily snowfall 45.7 cm (18.0 in) |
| 2011-02-01 | Record snow depth | Record snow depth 45.7 cm (18.0 in) |
Wettest Day of Each Month
Aug: 215.9 mm (8.5 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 67.8 mm (2.7 in) | 19 January 1907 |
| Feb | 56.6 mm (2.2 in) | 20 February 2014 |
| Mar | 85.9 mm (3.4 in) | 4 March 1985 |
| Apr | 76.2 mm (3.0 in) | 2 April 1983 |
| May | 121.9 mm (4.8 in) | 28 May 1908 |
| Jun | 162.6 mm (6.4 in) | 10 June 1905 |
| Jul | 102.6 mm (4.0 in) | 19 July 1961 |
| Aug | 215.9 mm (8.5 in) | 6 August 1959 |
| Sep | 114.3 mm (4.5 in) | 7 September 1911 |
| Oct | 83.8 mm (3.3 in) | 13 October 1969 |
| Nov | 78.7 mm (3.1 in) | 27 November 1990 |
| Dec | 76.2 mm (3.0 in) | 2 December 1982 |
Period of Record Coverage
1893 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1893 | 250 | 68% | No |
| 1894 | 307 | 84% | No |
| 1895 | 281 | 77% | No |
| 1900 | 163 | 45% | No |
| 1901 | 86 | 24% | No |
| 1902 | 76 | 21% | No |
| 1903 | 80 | 22% | No |
| 1904 | 22 | 6% | No |
| 1907 | 25 | 7% | No |
| 1908 | 147 | 40% | No |
| 1909 | 104 | 28% | No |
| 1916 | 31 | 8% | No |
| 1918 | 20 | 5% | No |
| 1952 | 85 | 23% | No |
| 1953 | 361 | 99% | Yes |
| 1954 | 347 | 95% | Yes |
| 1955 | 357 | 98% | Yes |
| 1956 | 363 | 99% | Yes |
| 1957 | 364 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 360 | 99% | Yes |
| 1960 | 360 | 98% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 364 | 100% | Yes |
| 1964 | 365 | 100% | Yes |
| 1965 | 332 | 91% | Yes |
| 1966 | 364 | 100% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 365 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 364 | 100% | Yes |
| 1971 | 360 | 99% | Yes |
| 1972 | 362 | 99% | Yes |
| 1973 | 273 | 75% | No |
| 1974 | 358 | 98% | Yes |
| 1975 | 326 | 89% | No |
| 1976 | 356 | 97% | Yes |
| 1977 | 361 | 99% | Yes |
| 1978 | 363 | 99% | Yes |
| 1979 | 300 | 82% | No |
| 1980 | 327 | 89% | No |
| 1981 | 365 | 100% | Yes |
| 1982 | 363 | 99% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 365 | 100% | Yes |
| 1988 | 366 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 363 | 99% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 364 | 100% | Yes |
| 1996 | 366 | 100% | Yes |
| 1997 | 365 | 100% | Yes |
| 1998 | 364 | 100% | Yes |
| 1999 | 364 | 100% | Yes |
| 2000 | 365 | 100% | Yes |
| 2001 | 362 | 99% | Yes |
| 2002 | 360 | 99% | Yes |
| 2003 | 363 | 99% | Yes |
| 2004 | 365 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 364 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 364 | 99% | Yes |
| 2009 | 362 | 99% | Yes |
| 2010 | 357 | 98% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 362 | 99% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 364 | 100% | Yes |
| 2020 | 365 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 362 | 99% | Yes |
| 2023 | 344 | 94% | Yes |
| 2024 | 348 | 95% | Yes |
| 2025 | 287 | 79% | No |
| 2026 | 255 | 70% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 11 October 2026 | Ft Madison, US | daily high min (Provisional) | 17.8 C (64.0 F) | 0.6 C (1.1 F) | 72 years | 32 of 100 (Routine) |
| 15 August 2026 | Ft Madison, US | daily rain | 64.0 mm (2.5 in) | 24.6 mm (1.0 in) | 119 years | 55 of 100 (Notable) |
| 1 August 2026 | Ft Madison, US | daily low max | 22.2 C (72.0 F) | 1.1 C (2.0 F) | 40 years | 25 of 100 (Routine) |
| 29 June 2026 | Ft Madison, US | daily high min (Tie) | 24.4 C (75.9 F) | tie | 55 years | 6 of 100 (Routine) |
| 26 June 2026 | Ft Madison, US | daily low max | 19.4 C (66.9 F) | 1.2 C (2.2 F) | 11 years | 16 of 100 (Routine) |
| 13 April 2026 | Ft Madison, US | daily high min | 16.1 C (61.0 F) | 0.5 C (0.9 F) | 61 years | 28 of 100 (Routine) |
| 12 April 2026 | Ft Madison, US | daily high min | 17.2 C (63.0 F) | 1.6 C (2.9 F) | 55 years | 29 of 100 (Routine) |
| 31 March 2026 | Ft Madison, US | daily high max (Tie) | 27.2 C (81.0 F) | tie | 59 years | 6 of 100 (Routine) |
| 26 March 2026 | Ft Madison, US | monthly high max | 31.1 C (88.0 F) | 2.2 C (4.0 F) | 130 years | 53 of 100 (Notable) |
| 21 March 2026 | Ft Madison, US | daily high max | 26.7 C (80.1 F) | 0.6 C (1.1 F) | 13 years | 14 of 100 (Routine) |
| 20 March 2026 | Ft Madison, US | daily high max | 27.8 C (82.0 F) | 1.7 C (3.1 F) | 13 years | 16 of 100 (Routine) |
| 17 March 2026 | Ft Madison, US | daily low min | -13.3 C (8.1 F) | 0.5 C (0.9 F) | 124 years | 40 of 100 (Notable) |
| 17 March 2026 | Ft Madison, US | daily snowfall | 2.5 cm (1.0 in) | 0.5 cm (0.2 in) | 41 years | 20 of 100 (Routine) |
| 17 March 2026 | Ft Madison, US | daily low max (Tie) | -2.2 C (28.0 F) | tie | 32 years | 4 of 100 (Routine) |
| 16 March 2026 | Ft Madison, US | daily low min | -12.2 C (10.0 F) | 3.3 C (5.9 F) | 130 years | 45 of 100 (Notable) |
| 10 March 2026 | Ft Madison, US | daily high max | 26.7 C (80.1 F) | 5.0 C (9.0 F) | 71 years | 38 of 100 (Notable) |
| 6 March 2026 | Ft Madison, US | daily high min | 10.6 C (51.1 F) | 0.6 C (1.1 F) | 8 years | 13 of 100 (Routine) |
| 27 February 2026 | Ft Madison, US | monthly high max | 22.8 C (73.0 F) | 1.1 C (2.0 F) | 72 years | 42 of 100 (Notable) |
| 18 February 2026 | Ft Madison, US | daily high max | 18.3 C (64.9 F) | 1.1 C (2.0 F) | 8 years | 13 of 100 (Routine) |
| 16 February 2026 | Ft Madison, US | daily high min (Tie) | 4.4 C (39.9 F) | tie | 28 years | 4 of 100 (Routine) |
Climate Trend
65 complete years, 1953 to 2022| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1953 | 12.7 C | +1.39 C |
| 1954 | 12.5 C | +1.25 C |
| 1955 | 11.6 C | +0.36 C |
| 1956 | 12.0 C | +0.68 C |
| 1957 | 11.4 C | +0.10 C |
| 1958 | 10.7 C | -0.59 C |
| 1959 | 11.1 C | -0.21 C |
| 1960 | 10.4 C | -0.83 C |
| 1961 | 11.0 C | -0.25 C |
| 1962 | 10.9 C | -0.41 C |
| 1963 | 11.1 C | -0.18 C |
| 1964 | 11.7 C | +0.43 C |
| 1966 | 10.4 C | -0.85 C |
| 1967 | 10.6 C | -0.67 C |
| 1968 | 11.2 C | -0.10 C |
| 1969 | 10.3 C | -0.93 C |
| 1970 | 11.0 C | -0.24 C |
| 1971 | 11.1 C | -0.21 C |
| 1972 | 9.6 C | -1.65 C |
| 1974 | 10.5 C | -0.78 C |
| 1976 | 10.1 C | -1.20 C |
| 1977 | 10.4 C | -0.85 C |
| 1978 | 9.0 C | -2.23 C |
| 1981 | 10.7 C | -0.58 C |
| 1982 | 9.7 C | -1.55 C |
| 1983 | 11.0 C | -0.27 C |
| 1984 | 10.4 C | -0.87 C |
| 1985 | 9.5 C | -1.75 C |
| 1986 | 11.6 C | +0.35 C |
| 1987 | 13.0 C | +1.68 C |
| 1988 | 11.8 C | +0.54 C |
| 1989 | 10.6 C | -0.70 C |
| 1990 | 12.2 C | +0.95 C |
| 1991 | 12.1 C | +0.85 C |
| 1992 | 11.3 C | +0.05 C |
| 1993 | 10.5 C | -0.82 C |
| 1994 | 11.4 C | +0.14 C |
| 1995 | 10.9 C | -0.33 C |
| 1996 | 10.2 C | -1.11 C |
| 1997 | 10.9 C | -0.42 C |
| 1998 | 13.0 C | +1.76 C |
| 1999 | 12.4 C | +1.10 C |
| 2000 | 11.7 C | +0.42 C |
| 2001 | 12.1 C | +0.87 C |
| 2002 | 12.2 C | +0.93 C |
| 2003 | 11.3 C | +0.03 C |
| 2004 | 11.7 C | +0.41 C |
| 2005 | 12.6 C | +1.33 C |
| 2006 | 12.8 C | +1.48 C |
| 2007 | 12.2 C | +0.97 C |
| 2008 | 10.7 C | -0.59 C |
| 2009 | 10.9 C | -0.33 C |
| 2010 | 11.9 C | +0.62 C |
| 2011 | 12.0 C | +0.72 C |
| 2012 | 13.6 C | +2.32 C |
| 2013 | 10.6 C | -0.66 C |
| 2014 | 9.1 C | -2.17 C |
| 2015 | 11.1 C | -0.21 C |
| 2016 | 12.1 C | +0.85 C |
| 2017 | 12.3 C | +1.01 C |
| 2018 | 11.2 C | -0.10 C |
| 2019 | 10.9 C | -0.36 C |
| 2020 | 11.8 C | +0.49 C |
| 2021 | 12.1 C | +0.82 C |
| 2022 | 11.2 C | -0.03 C |
The fitted trend in annual mean temperature here over 1953 to 2022 is 0.10 C (-0.01 to 0.22) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.19 F (-0.02 to 0.39) per decade. The slope is a straight line fitted to 65 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.10 C (-0.01 to 0.22) per decade | 0.19 F (-0.02 to 0.39) per decade | 1953 to 2022 | 65 | Not clearly different from zero |
| Mean daily maximum | -0.08 C (-0.19 to 0.03) per decade | -0.1 F (-0.3 to 0.1) per decade | 1953 to 2022 | 65 | Not clearly different from zero |
| Mean daily minimum | 0.3 C (0.2 to 0.4) per decade | 0.5 F (0.3 to 0.8) per decade | 1953 to 2022 | 65 | Rise |
A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.
Extremes by Year
1893 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 41.7 C (107.1 F) | 1916 | 35.9 C (96.5 F) | 88 |
| Coldest night (TNn) | -30.6 C (-23.1 F) | 1982 | -22.8 C (-9.0 F) | 88 |
| Wettest day (Rx1day) | 215.9 mm (8.5 in) | 1959 | 59.9 mm (2.4 in) | 97 |
| Wettest five days (Rx5day) | 260.6 mm (10.3 in) | 1970 | 97.5 mm (3.8 in) | 97 |
| Longest dry spell (CDD) | 46 days | 1893 | 24 days | 97 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1893 | 35.0 C (95.0 F) |
| 1894 | 38.3 C (100.9 F) |
| 1895 | 35.0 C (95.0 F) |
| 1900 | 36.7 C (98.1 F) |
| 1901 | 38.3 C (100.9 F) |
| 1902 | 21.7 C (71.1 F) |
| 1903 | 35.0 C (95.0 F) |
| 1904 | 4.4 C (39.9 F) |
| 1905 | n/a |
| 1906 | n/a |
| 1907 | 23.9 C (75.0 F) |
| 1908 | 32.2 C (90.0 F) |
| 1909 | 32.2 C (90.0 F) |
| 1910 | n/a |
| 1911 | n/a |
| 1912 | n/a |
| 1913 | n/a |
| 1914 | n/a |
| 1915 | n/a |
| 1916 | 41.7 C (107.1 F) |
| 1917 | n/a |
| 1918 | 18.9 C (66.0 F) |
| 1952 | 26.7 C (80.1 F) |
| 1953 | 37.2 C (99.0 F) |
| 1954 | 38.9 C (102.0 F) |
| 1955 | 38.9 C (102.0 F) |
| 1956 | 38.9 C (102.0 F) |
| 1957 | 37.8 C (100.0 F) |
| 1958 | 34.4 C (93.9 F) |
| 1959 | 35.0 C (95.0 F) |
| 1960 | 35.6 C (96.1 F) |
| 1961 | 34.4 C (93.9 F) |
| 1962 | 34.4 C (93.9 F) |
| 1963 | 36.7 C (98.1 F) |
| 1964 | 36.1 C (97.0 F) |
| 1965 | 36.1 C (97.0 F) |
| 1966 | 40.0 C (104.0 F) |
| 1967 | 35.0 C (95.0 F) |
| 1968 | 35.6 C (96.1 F) |
| 1969 | 36.7 C (98.1 F) |
| 1970 | 39.4 C (102.9 F) |
| 1971 | 37.2 C (99.0 F) |
| 1972 | 35.0 C (95.0 F) |
| 1973 | 37.8 C (100.0 F) |
| 1974 | 35.6 C (96.1 F) |
| 1975 | 37.8 C (100.0 F) |
| 1976 | 37.2 C (99.0 F) |
| 1977 | 37.8 C (100.0 F) |
| 1978 | 34.4 C (93.9 F) |
| 1979 | 33.3 C (91.9 F) |
| 1980 | 37.8 C (100.0 F) |
| 1981 | 35.6 C (96.1 F) |
| 1982 | 35.6 C (96.1 F) |
| 1983 | 40.0 C (104.0 F) |
| 1984 | 35.6 C (96.1 F) |
| 1985 | 33.9 C (93.0 F) |
| 1986 | 35.0 C (95.0 F) |
| 1987 | 39.4 C (102.9 F) |
| 1988 | 40.0 C (104.0 F) |
| 1989 | 36.7 C (98.1 F) |
| 1990 | 37.2 C (99.0 F) |
| 1991 | 36.1 C (97.0 F) |
| 1992 | 33.9 C (93.0 F) |
| 1993 | 34.4 C (93.9 F) |
| 1994 | 34.4 C (93.9 F) |
| 1995 | 37.2 C (99.0 F) |
| 1996 | 34.4 C (93.9 F) |
| 1997 | 35.6 C (96.1 F) |
| 1998 | 35.6 C (96.1 F) |
| 1999 | 36.7 C (98.1 F) |
| 2000 | 37.8 C (100.0 F) |
| 2001 | 37.2 C (99.0 F) |
| 2002 | 36.7 C (98.1 F) |
| 2003 | 37.8 C (100.0 F) |
| 2004 | 35.6 C (96.1 F) |
| 2005 | 38.9 C (102.0 F) |
| 2006 | 37.2 C (99.0 F) |
| 2007 | 37.8 C (100.0 F) |
| 2008 | 34.4 C (93.9 F) |
| 2009 | 36.1 C (97.0 F) |
| 2010 | 35.6 C (96.1 F) |
| 2011 | 38.3 C (100.9 F) |
| 2012 | 40.6 C (105.1 F) |
| 2013 | 40.0 C (104.0 F) |
| 2014 | 33.3 C (91.9 F) |
| 2015 | 32.8 C (91.0 F) |
| 2016 | 34.4 C (93.9 F) |
| 2017 | 37.2 C (99.0 F) |
| 2018 | 35.0 C (95.0 F) |
| 2019 | 33.9 C (93.0 F) |
| 2020 | 35.0 C (95.0 F) |
| 2021 | 33.3 C (91.9 F) |
| 2022 | 35.6 C (96.1 F) |
| 2023 | 37.2 C (99.0 F) |
| 2024 | 35.6 C (96.1 F) |
| 2025 | 36.1 C (97.0 F) |
| 2026 | 36.1 C (97.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1893 | -17.8 C (0.0 F) |
| 1894 | -26.7 C (-16.1 F) |
| 1895 | -24.4 C (-11.9 F) |
| 1900 | -20.6 C (-5.1 F) |
| 1901 | 0.6 C (33.1 F) |
| 1902 | -20.6 C (-5.1 F) |
| 1903 | 0.0 C (32.0 F) |
| 1904 | -27.8 C (-18.0 F) |
| 1905 | n/a |
| 1906 | n/a |
| 1907 | -2.2 C (28.0 F) |
| 1908 | -9.4 C (15.1 F) |
| 1909 | -18.3 C (-0.9 F) |
| 1910 | n/a |
| 1911 | n/a |
| 1912 | n/a |
| 1913 | n/a |
| 1914 | n/a |
| 1915 | n/a |
| 1916 | -4.4 C (24.1 F) |
| 1917 | n/a |
| 1918 | -27.8 C (-18.0 F) |
| 1952 | -12.8 C (9.0 F) |
| 1953 | -18.9 C (-2.0 F) |
| 1954 | -21.1 C (-6.0 F) |
| 1955 | -25.6 C (-14.1 F) |
| 1956 | -19.4 C (-2.9 F) |
| 1957 | -27.2 C (-17.0 F) |
| 1958 | -25.6 C (-14.1 F) |
| 1959 | -26.7 C (-16.1 F) |
| 1960 | -23.3 C (-9.9 F) |
| 1961 | -22.2 C (-8.0 F) |
| 1962 | -26.7 C (-16.1 F) |
| 1963 | -28.9 C (-20.0 F) |
| 1964 | -21.1 C (-6.0 F) |
| 1965 | -23.9 C (-11.0 F) |
| 1966 | -27.8 C (-18.0 F) |
| 1967 | -22.2 C (-8.0 F) |
| 1968 | -24.4 C (-11.9 F) |
| 1969 | -24.4 C (-11.9 F) |
| 1970 | -27.8 C (-18.0 F) |
| 1971 | -22.2 C (-8.0 F) |
| 1972 | -26.1 C (-15.0 F) |
| 1973 | -23.9 C (-11.0 F) |
| 1974 | -30.0 C (-22.0 F) |
| 1975 | -29.4 C (-20.9 F) |
| 1976 | -25.0 C (-13.0 F) |
| 1977 | -28.9 C (-20.0 F) |
| 1978 | -27.8 C (-18.0 F) |
| 1979 | -29.4 C (-20.9 F) |
| 1980 | -20.0 C (-4.0 F) |
| 1981 | -23.9 C (-11.0 F) |
| 1982 | -30.6 C (-23.1 F) |
| 1983 | -28.3 C (-18.9 F) |
| 1984 | -24.4 C (-11.9 F) |
| 1985 | -29.4 C (-20.9 F) |
| 1986 | -20.6 C (-5.1 F) |
| 1987 | -18.3 C (-0.9 F) |
| 1988 | -23.3 C (-9.9 F) |
| 1989 | -28.3 C (-18.9 F) |
| 1990 | -20.0 C (-4.0 F) |
| 1991 | -20.0 C (-4.0 F) |
| 1992 | -18.9 C (-2.0 F) |
| 1993 | -18.3 C (-0.9 F) |
| 1994 | -26.1 C (-15.0 F) |
| 1995 | -18.3 C (-0.9 F) |
| 1996 | -28.9 C (-20.0 F) |
| 1997 | -23.9 C (-11.0 F) |
| 1998 | -21.1 C (-6.0 F) |
| 1999 | -26.7 C (-16.1 F) |
| 2000 | -22.8 C (-9.0 F) |
| 2001 | -22.2 C (-8.0 F) |
| 2002 | -18.3 C (-0.9 F) |
| 2003 | -20.0 C (-4.0 F) |
| 2004 | -21.7 C (-7.1 F) |
| 2005 | -18.9 C (-2.0 F) |
| 2006 | -20.0 C (-4.0 F) |
| 2007 | -20.0 C (-4.0 F) |
| 2008 | -20.6 C (-5.1 F) |
| 2009 | -25.6 C (-14.1 F) |
| 2010 | -22.2 C (-8.0 F) |
| 2011 | -22.8 C (-9.0 F) |
| 2012 | -14.4 C (6.1 F) |
| 2013 | -22.2 C (-8.0 F) |
| 2014 | -28.3 C (-18.9 F) |
| 2015 | -22.8 C (-9.0 F) |
| 2016 | -22.8 C (-9.0 F) |
| 2017 | -23.9 C (-11.0 F) |
| 2018 | -26.1 C (-15.0 F) |
| 2019 | -27.8 C (-18.0 F) |
| 2020 | -21.7 C (-7.1 F) |
| 2021 | -23.9 C (-11.0 F) |
| 2022 | -22.2 C (-8.0 F) |
| 2023 | -17.2 C (1.0 F) |
| 2024 | -24.4 C (-11.9 F) |
| 2025 | -23.9 C (-11.0 F) |
| 2026 | -22.2 C (-8.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1893 | 63.5 mm (2.5 in) |
| 1894 | 47.5 mm (1.9 in) |
| 1895 | 42.7 mm (1.7 in) |
| 1900 | 45.7 mm (1.8 in) |
| 1901 | 56.6 mm (2.2 in) |
| 1902 | 53.3 mm (2.1 in) |
| 1903 | 65.5 mm (2.6 in) |
| 1904 | 57.7 mm (2.3 in) |
| 1905 | 162.6 mm (6.4 in) |
| 1906 | 97.8 mm (3.9 in) |
| 1907 | 67.8 mm (2.7 in) |
| 1908 | 121.9 mm (4.8 in) |
| 1909 | 64.8 mm (2.6 in) |
| 1910 | 57.7 mm (2.3 in) |
| 1911 | 114.3 mm (4.5 in) |
| 1912 | 43.2 mm (1.7 in) |
| 1913 | 48.3 mm (1.9 in) |
| 1914 | 55.6 mm (2.2 in) |
| 1915 | 48.3 mm (1.9 in) |
| 1916 | 100.1 mm (3.9 in) |
| 1917 | 93.0 mm (3.7 in) |
| 1918 | 118.1 mm (4.6 in) |
| 1952 | 21.3 mm (0.8 in) |
| 1953 | 40.1 mm (1.6 in) |
| 1954 | 73.9 mm (2.9 in) |
| 1955 | 47.5 mm (1.9 in) |
| 1956 | 57.2 mm (2.3 in) |
| 1957 | 50.8 mm (2.0 in) |
| 1958 | 36.6 mm (1.4 in) |
| 1959 | 215.9 mm (8.5 in) |
| 1960 | 66.0 mm (2.6 in) |
| 1961 | 110.0 mm (4.3 in) |
| 1962 | 68.3 mm (2.7 in) |
| 1963 | 49.8 mm (2.0 in) |
| 1964 | 73.7 mm (2.9 in) |
| 1965 | 54.9 mm (2.2 in) |
| 1966 | 71.1 mm (2.8 in) |
| 1967 | 50.3 mm (2.0 in) |
| 1968 | 76.2 mm (3.0 in) |
| 1969 | 83.8 mm (3.3 in) |
| 1970 | 121.4 mm (4.8 in) |
| 1971 | 57.7 mm (2.3 in) |
| 1972 | 51.3 mm (2.0 in) |
| 1973 | 42.9 mm (1.7 in) |
| 1974 | 50.8 mm (2.0 in) |
| 1975 | 40.1 mm (1.6 in) |
| 1976 | 58.4 mm (2.3 in) |
| 1977 | 94.0 mm (3.7 in) |
| 1978 | 46.2 mm (1.8 in) |
| 1979 | 67.3 mm (2.6 in) |
| 1980 | 51.1 mm (2.0 in) |
| 1981 | 68.8 mm (2.7 in) |
| 1982 | 76.2 mm (3.0 in) |
| 1983 | 76.2 mm (3.0 in) |
| 1984 | 60.2 mm (2.4 in) |
| 1985 | 85.9 mm (3.4 in) |
| 1986 | 59.9 mm (2.4 in) |
| 1987 | 38.9 mm (1.5 in) |
| 1988 | 45.7 mm (1.8 in) |
| 1989 | 40.1 mm (1.6 in) |
| 1990 | 80.8 mm (3.2 in) |
| 1991 | 72.6 mm (2.9 in) |
| 1992 | 59.2 mm (2.3 in) |
| 1993 | 124.0 mm (4.9 in) |
| 1994 | 43.2 mm (1.7 in) |
| 1995 | 95.5 mm (3.8 in) |
| 1996 | 103.1 mm (4.1 in) |
| 1997 | 77.5 mm (3.1 in) |
| 1998 | 76.2 mm (3.0 in) |
| 1999 | 54.9 mm (2.2 in) |
| 2000 | 39.9 mm (1.6 in) |
| 2001 | 58.9 mm (2.3 in) |
| 2002 | 93.0 mm (3.7 in) |
| 2003 | 71.1 mm (2.8 in) |
| 2004 | 110.7 mm (4.4 in) |
| 2005 | 37.6 mm (1.5 in) |
| 2006 | 53.3 mm (2.1 in) |
| 2007 | 72.4 mm (2.9 in) |
| 2008 | 59.9 mm (2.4 in) |
| 2009 | 57.9 mm (2.3 in) |
| 2010 | 69.9 mm (2.8 in) |
| 2011 | 56.9 mm (2.2 in) |
| 2012 | 61.7 mm (2.4 in) |
| 2013 | 96.0 mm (3.8 in) |
| 2014 | 56.6 mm (2.2 in) |
| 2015 | 65.0 mm (2.6 in) |
| 2016 | 50.3 mm (2.0 in) |
| 2017 | 70.9 mm (2.8 in) |
| 2018 | 53.3 mm (2.1 in) |
| 2019 | 48.8 mm (1.9 in) |
| 2020 | 43.4 mm (1.7 in) |
| 2021 | 72.1 mm (2.8 in) |
| 2022 | 31.5 mm (1.2 in) |
| 2023 | 72.9 mm (2.9 in) |
| 2024 | 44.2 mm (1.7 in) |
| 2025 | 70.1 mm (2.8 in) |
| 2026 | 64.0 mm (2.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1893 | 78.2 mm (3.1 in) |
| 1894 | 49.5 mm (1.9 in) |
| 1895 | 44.9 mm (1.8 in) |
| 1900 | 63.7 mm (2.5 in) |
| 1901 | 48.3 mm (1.9 in) |
| 1902 | 67.2 mm (2.6 in) |
| 1903 | 66.8 mm (2.6 in) |
| 1904 | 82.1 mm (3.2 in) |
| 1905 | 89.7 mm (3.5 in) |
| 1906 | 59.1 mm (2.3 in) |
| 1907 | 110.5 mm (4.4 in) |
| 1908 | 83.3 mm (3.3 in) |
| 1909 | 129.3 mm (5.1 in) |
| 1910 | 63.0 mm (2.5 in) |
| 1911 | 85.8 mm (3.4 in) |
| 1912 | 58.7 mm (2.3 in) |
| 1913 | 86.3 mm (3.4 in) |
| 1914 | 82.8 mm (3.3 in) |
| 1915 | 95.8 mm (3.8 in) |
| 1916 | 104.2 mm (4.1 in) |
| 1917 | 115.6 mm (4.6 in) |
| 1918 | 126.2 mm (5.0 in) |
| 1952 | 43.7 mm (1.7 in) |
| 1953 | 78.0 mm (3.1 in) |
| 1954 | 102.1 mm (4.0 in) |
| 1955 | 64.3 mm (2.5 in) |
| 1956 | 72.4 mm (2.9 in) |
| 1957 | 78.3 mm (3.1 in) |
| 1958 | 99.4 mm (3.9 in) |
| 1959 | 249.7 mm (9.8 in) |
| 1960 | 100.8 mm (4.0 in) |
| 1961 | 205.0 mm (8.1 in) |
| 1962 | 88.7 mm (3.5 in) |
| 1963 | 99.3 mm (3.9 in) |
| 1964 | 109.5 mm (4.3 in) |
| 1965 | 79.8 mm (3.1 in) |
| 1966 | 115.6 mm (4.6 in) |
| 1967 | 96.5 mm (3.8 in) |
| 1968 | 108.2 mm (4.3 in) |
| 1969 | 205.4 mm (8.1 in) |
| 1970 | 260.6 mm (10.3 in) |
| 1971 | 71.1 mm (2.8 in) |
| 1972 | 65.2 mm (2.6 in) |
| 1973 | 87.1 mm (3.4 in) |
| 1974 | 105.1 mm (4.1 in) |
| 1975 | 66.5 mm (2.6 in) |
| 1976 | 70.4 mm (2.8 in) |
| 1977 | 150.9 mm (5.9 in) |
| 1978 | 78.2 mm (3.1 in) |
| 1979 | 83.6 mm (3.3 in) |
| 1980 | 140.9 mm (5.5 in) |
| 1981 | 106.6 mm (4.2 in) |
| 1982 | 112.8 mm (4.4 in) |
| 1983 | 103.0 mm (4.1 in) |
| 1984 | 96.3 mm (3.8 in) |
| 1985 | 98.3 mm (3.9 in) |
| 1986 | 130.1 mm (5.1 in) |
| 1987 | 67.1 mm (2.6 in) |
| 1988 | 63.2 mm (2.5 in) |
| 1989 | 66.3 mm (2.6 in) |
| 1990 | 115.9 mm (4.6 in) |
| 1991 | 113.8 mm (4.5 in) |
| 1992 | 111.0 mm (4.4 in) |
| 1993 | 130.4 mm (5.1 in) |
| 1994 | 61.7 mm (2.4 in) |
| 1995 | 97.5 mm (3.8 in) |
| 1996 | 169.2 mm (6.7 in) |
| 1997 | 97.5 mm (3.8 in) |
| 1998 | 124.4 mm (4.9 in) |
| 1999 | 113.3 mm (4.5 in) |
| 2000 | 89.8 mm (3.5 in) |
| 2001 | 89.3 mm (3.5 in) |
| 2002 | 126.7 mm (5.0 in) |
| 2003 | 108.7 mm (4.3 in) |
| 2004 | 160.9 mm (6.3 in) |
| 2005 | 60.2 mm (2.4 in) |
| 2006 | 82.5 mm (3.2 in) |
| 2007 | 136.6 mm (5.4 in) |
| 2008 | 116.1 mm (4.6 in) |
| 2009 | 105.2 mm (4.1 in) |
| 2010 | 120.5 mm (4.7 in) |
| 2011 | 80.5 mm (3.2 in) |
| 2012 | 102.1 mm (4.0 in) |
| 2013 | 104.6 mm (4.1 in) |
| 2014 | 89.2 mm (3.5 in) |
| 2015 | 84.9 mm (3.3 in) |
| 2016 | 64.0 mm (2.5 in) |
| 2017 | 118.6 mm (4.7 in) |
| 2018 | 109.3 mm (4.3 in) |
| 2019 | 94.8 mm (3.7 in) |
| 2020 | 114.3 mm (4.5 in) |
| 2021 | 121.5 mm (4.8 in) |
| 2022 | 78.0 mm (3.1 in) |
| 2023 | 113.2 mm (4.5 in) |
| 2024 | 100.6 mm (4.0 in) |
| 2025 | 134.1 mm (5.3 in) |
| 2026 | 127.2 mm (5.0 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1893 | 46 days |
| 1894 | 23 days |
| 1895 | 20 days |
| 1900 | 18 days |
| 1901 | 29 days |
| 1902 | 26 days |
| 1903 | 17 days |
| 1904 | 32 days |
| 1905 | 25 days |
| 1906 | 22 days |
| 1907 | 24 days |
| 1908 | 25 days |
| 1909 | 27 days |
| 1910 | 34 days |
| 1911 | 14 days |
| 1912 | 28 days |
| 1913 | 35 days |
| 1914 | 37 days |
| 1915 | 26 days |
| 1916 | 25 days |
| 1917 | 28 days |
| 1918 | 17 days |
| 1952 | 33 days |
| 1953 | 22 days |
| 1954 | 35 days |
| 1955 | 29 days |
| 1956 | 28 days |
| 1957 | 24 days |
| 1958 | 36 days |
| 1959 | 34 days |
| 1960 | 21 days |
| 1961 | 16 days |
| 1962 | 17 days |
| 1963 | 36 days |
| 1964 | 45 days |
| 1965 | 21 days |
| 1966 | 26 days |
| 1967 | 25 days |
| 1968 | 21 days |
| 1969 | 22 days |
| 1970 | 15 days |
| 1971 | 37 days |
| 1972 | 32 days |
| 1973 | 19 days |
| 1974 | 25 days |
| 1975 | 25 days |
| 1976 | 26 days |
| 1977 | 20 days |
| 1978 | 21 days |
| 1979 | 15 days |
| 1980 | 28 days |
| 1981 | 31 days |
| 1982 | 25 days |
| 1983 | 21 days |
| 1984 | 28 days |
| 1985 | 24 days |
| 1986 | 28 days |
| 1987 | 22 days |
| 1988 | 37 days |
| 1989 | 21 days |
| 1990 | 17 days |
| 1991 | 19 days |
| 1992 | 22 days |
| 1993 | 24 days |
| 1994 | 17 days |
| 1995 | 22 days |
| 1996 | 18 days |
| 1997 | 17 days |
| 1998 | 23 days |
| 1999 | 23 days |
| 2000 | 17 days |
| 2001 | 24 days |
| 2002 | 28 days |
| 2003 | 14 days |
| 2004 | 24 days |
| 2005 | 21 days |
| 2006 | 22 days |
| 2007 | 26 days |
| 2008 | 15 days |
| 2009 | 23 days |
| 2010 | 24 days |
| 2011 | 20 days |
| 2012 | 24 days |
| 2013 | 42 days |
| 2014 | 21 days |
| 2015 | 23 days |
| 2016 | 22 days |
| 2017 | 27 days |
| 2018 | 16 days |
| 2019 | 18 days |
| 2020 | 17 days |
| 2021 | 23 days |
| 2022 | 17 days |
| 2023 | 22 days |
| 2024 | 22 days |
| 2025 | 28 days |
| 2026 | 37 days |
Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.
Frost Dates and Growing Season
65 years with a frostAcross 65 years with a frost, the median last spring frost at Ft Madison falls on 15 April and the median first autumn frost on 20 October, which leaves a median of 188 days between them.
In 1993 to 2022 the median growing season was 192 days. That is 7 days more than in 1953 to 1987.
Fitted over all years, the growing season changes by +2.6 days per decade at this station.
| Measure | Median, all years | Earliest period (1953 to 1987) | Recent period (1993 to 2022) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 15 April | 22 April | 12 April | 10 days earlier | -1.7 days per decade |
| First autumn frost | 20 October | 17 October | 25 October | 8 days later | +0.9 days per decade |
| Growing days | 188 days | 185 days | 192 days | 7 days more | +2.6 days per decade |
A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.
Rainfall Return Levels
72 years, 1910 to 2025A day with at least 61.3 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 162.1 mm (6.4 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 61.3 mm (2.4 in) | |
| 5 years | 82.5 mm (3.2 in) | |
| 10 years | 98.6 mm (3.9 in) | |
| 25 years | 121.6 mm (4.8 in) | |
| 50 years | 140.9 mm (5.5 in) | |
| 100 years | 162.1 mm (6.4 in) | Longer than the 72 years of record |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 72 years of values from 1910 to 2025.
A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.
The largest wettest-day totals in the fit: 215.9 mm (8.5 in) in 1959; 124.0 mm (4.9 in) in 1993; 121.4 mm (4.8 in) in 1970.
Station Changes
3 suspected3 changes were suspected in the annual mean temperature of Ft Madison, at 1972, 1986 and 2013. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1972 ran 0.4 C (0.8 F) lower than in the years before (likely change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1986 ran 0.5 C (0.9 F) higher than in the years before (likely change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2013 ran 0.3 C (0.5 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1972 | -0.4 | -0.8 | likely | 5 |
| 1986 | +0.5 | +0.9 | likely | 5 |
| 2013 | -0.2 | -0.4 | likely | 5 |
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Climate Twins
2008 to 2022 against 1961 to 1990Over 2008 to 2022, Ft Madison had a mean temperature of 11.4 C (52.6 F) and 1,006.9 mm (39.6 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Havana (United States, 113 km away), Mexico (United States, 168 km away) and Decatur Wtp (United States, 221 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Havana | United States | 113 km (70 mi) | 11.3 C (52.3 F) | 939.8 mm (37.0 in) | 0.60 |
| Mexico | United States | 168 km (104 mi) | 11.3 C (52.3 F) | 1,013.3 mm (39.9 in) | 0.60 |
| Decatur Wtp | United States | 221 km (137 mi) | 11.6 C (52.8 F) | 1,016.1 mm (40.0 in) | 0.61 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
Download the Data
Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-17).