Decatur 1 N Weather Records (USC00122096)
Record envelope, standing records and threshold days for Decatur 1 N (USC00122096), Indiana, United States, with 96 years of record.
Key Facts for Decatur 1 N
- Decatur 1 N (USC00122096) is a weather station in Indiana, United States at 40.85 latitude and -84.93 longitude, 239 m (785 ft) above sea level.
- The station reports from 1931 to 2026, 96 years of record.
- 1,464 records set at Decatur 1 N still stand.
- Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Decatur 1 N set a daily record precipitation of 64.8 mm (2.6 in) on 11 August 2026.
About the Station
- Location: Indiana, United States, 40.85 latitude, -84.93 longitude.
- Elevation: 239 m (785 ft).
- Period of record: 1931 to 2026, 96 years.
- Eligible elements: prcp, snow, snwd.
Daily Record Envelope and 2026
34 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 18.9 C (66.0 F) | -28.9 C (-20.0 F) | 17.2 C (63.0 F) | -22.2 C (-8.0 F) |
| Feb | 22.8 C (73.0 F) | -28.3 C (-18.9 F) | 19.4 C (66.9 F) | -23.3 C (-9.9 F) |
| Mar | 30.6 C (87.1 F) | -19.4 C (-2.9 F) | 27.2 C (81.0 F) | -7.8 C (18.0 F) |
| Apr | 29.4 C (84.9 F) | -8.9 C (16.0 F) | 28.3 C (82.9 F) | -2.8 C (27.0 F) |
| May | 35.6 C (96.1 F) | -2.8 C (27.0 F) | 31.1 C (88.0 F) | -0.6 C (30.9 F) |
| Jun | 38.9 C (102.0 F) | 4.4 C (39.9 F) | 34.4 C (93.9 F) | 8.3 C (46.9 F) |
| Jul | 38.3 C (100.9 F) | 5.6 C (42.1 F) | 35.0 C (95.0 F) | 10.6 C (51.1 F) |
| Aug | 35.6 C (96.1 F) | 4.4 C (39.9 F) | 31.1 C (88.0 F) | 10.0 C (50.0 F) |
| Sep | 35.6 C (96.1 F) | 1.1 C (34.0 F) | 34.4 C (93.9 F) | 6.1 C (43.0 F) |
| Oct | 32.2 C (90.0 F) | -3.9 C (25.0 F) | 28.3 C (82.9 F) | 4.4 C (39.9 F) |
| Nov | 26.1 C (79.0 F) | -15.0 C (5.0 F) | n/a | n/a |
| Dec | 20.6 C (69.1 F) | -24.4 C (-11.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1972 | 26 |
| 1973 | 7 |
| 1974 | 7 |
| 1976 | 44 |
| 1977 | 10 |
| 1978 | 16 |
| 1979 | 25 |
| 1980 | 12 |
| 1981 | 1 |
| 2005 | 23 |
| 2006 | 70 |
| 2007 | 75 |
| 2008 | 70 |
| 2009 | 57 |
| 2010 | 48 |
| 2011 | 55 |
| 2012 | 93 |
| 2013 | 68 |
| 2014 | 90 |
| 2015 | 74 |
| 2016 | 52 |
| 2017 | 73 |
| 2018 | 66 |
| 2019 | 45 |
| 2020 | 37 |
| 2021 | 52 |
| 2022 | 50 |
| 2023 | 53 |
| 2024 | 56 |
| 2025 | 63 |
| 2026 | 46 |
All-Time Record Progression
8 new records| Date | Kind | Detail |
|---|---|---|
| 1978-01-27 | Record snow depth | Record snow depth 55.9 cm (22.0 in) |
| 1978-01-31 | Record snow depth | Record snow depth 58.4 cm (23.0 in) |
| 1978-02-05 | Record snow depth | Record snow depth 61.0 cm (24.0 in) |
| 1978-02-06 | Record snow depth | Record snow depth 63.5 cm (25.0 in) |
| 1982-02-04 | Record daily snowfall | Record daily snowfall 26.7 cm (10.5 in) |
| 1982-02-09 | Record snow depth | Record snow depth 68.6 cm (27.0 in) |
| 2007-02-14 | Record daily snowfall | Record daily snowfall 30.5 cm (12.0 in) |
| 2007-08-21 | Record daily precipitation | Record daily precipitation 129.3 mm (5.1 in) |
Wettest Day of Each Month
Aug: 129.3 mm (5.1 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 66.3 mm (2.6 in) | 4 January 1950 |
| Feb | 77.7 mm (3.1 in) | 10 February 1959 |
| Mar | 61.5 mm (2.4 in) | 31 March 1938 |
| Apr | 103.1 mm (4.1 in) | 29 April 2020 |
| May | 82.6 mm (3.3 in) | 22 May 1949 |
| Jun | 95.8 mm (3.8 in) | 12 June 2004 |
| Jul | 114.6 mm (4.5 in) | 17 July 1943 |
| Aug | 129.3 mm (5.1 in) | 21 August 2007 |
| Sep | 72.9 mm (2.9 in) | 17 September 1969 |
| Oct | 100.6 mm (4.0 in) | 9 October 1950 |
| Nov | 86.9 mm (3.4 in) | 26 November 1950 |
| Dec | 100.8 mm (4.0 in) | 10 December 2008 |
Period of Record Coverage
1972 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1972 | 150 | 41% | No |
| 1973 | 31 | 8% | No |
| 1974 | 31 | 8% | No |
| 1976 | 124 | 34% | No |
| 1977 | 31 | 8% | No |
| 1978 | 58 | 16% | No |
| 1979 | 89 | 24% | No |
| 1980 | 107 | 29% | No |
| 1981 | 30 | 8% | No |
| 2005 | 153 | 42% | No |
| 2006 | 364 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 366 | 100% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 364 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 358 | 98% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 364 | 100% | Yes |
| 2016 | 366 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 364 | 100% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 264 | 72% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 11 August 2026 | Decatur 1 N, US | daily rain | 64.8 mm (2.6 in) | 11.0 mm (0.4 in) | 68 years | 37 of 100 (Notable) |
| 7 February 2026 | Decatur 1 N, US | daily snowfall (Tie) | 8.9 cm (3.5 in) | tie | 40 years | 5 of 100 (Routine) |
| 2 December 2025 | Decatur 1 N, US | daily snowfall | 6.4 cm (2.5 in) | 2.6 cm (1.0 in) | 88 years | 42 of 100 (Notable) |
| 30 November 2025 | Decatur 1 N, US | daily snowfall | 15.2 cm (6.0 in) | 12.7 cm (5.0 in) | 14 years | 47 of 100 (Notable) |
| 11 November 2025 | Decatur 1 N, US | daily snowfall (Tie) | 2.5 cm (1.0 in) | tie | 40 years | 5 of 100 (Routine) |
| 11 November 2025 | Decatur 1 N, US | daily snow depth (Tie) | 5.1 cm (2.0 in) | tie | 28 years | 4 of 100 (Routine) |
| 10 November 2025 | Decatur 1 N, US | daily snowfall | 6.4 cm (2.5 in) | 1.3 cm (0.5 in) | 28 years | 20 of 100 (Routine) |
| 10 November 2025 | Decatur 1 N, US | daily snow depth (Tie) | 7.6 cm (3.0 in) | tie | 28 years | 4 of 100 (Routine) |
| 3 April 2025 | Decatur 1 N, US | daily rain | 49.8 mm (2.0 in) | 27.4 mm (1.1 in) | 19 years | 41 of 100 (Notable) |
| 16 March 2025 | Decatur 1 N, US | daily rain | 33.5 mm (1.3 in) | 1.0 mm (0.04 in) | 40 years | 22 of 100 (Routine) |
| 11 January 2025 | Decatur 1 N, US | daily snowfall | 8.9 cm (3.5 in) | 3.8 cm (1.5 in) | 85 years | 44 of 100 (Notable) |
| 2 April 2024 | Decatur 1 N, US | daily rain | 45.7 mm (1.8 in) | 17.8 mm (0.7 in) | 67 years | 46 of 100 (Notable) |
| 14 October 2023 | Decatur 1 N, US | daily rain | 20.6 mm (0.8 in) | 0.8 mm (0.03 in) | 92 years | 20 of 100 (Routine) |
| 29 September 2023 | Decatur 1 N, US | daily rain | 43.9 mm (1.7 in) | 2.5 mm (0.10 in) | 24 years | 18 of 100 (Routine) |
| 6 August 2023 | Decatur 1 N, US | daily rain | 20.8 mm (0.8 in) | 0.5 mm (0.02 in) | 61 years | 20 of 100 (Routine) |
| 21 July 2023 | Decatur 1 N, US | daily rain | 73.9 mm (2.9 in) | 43.7 mm (1.7 in) | 20 years | 45 of 100 (Notable) |
| 26 January 2023 | Decatur 1 N, US | daily snowfall (Tie) | 10.2 cm (4.0 in) | tie | 19 years | 3 of 100 (Routine) |
| 31 December 2022 | Decatur 1 N, US | daily rain | 29.5 mm (1.2 in) | 7.9 mm (0.31 in) | 16 years | 21 of 100 (Routine) |
| 18 November 2022 | Decatur 1 N, US | daily snowfall (Tie) | 0.8 cm (0.3 in) | tie | 41 years | 5 of 100 (Routine) |
| 16 November 2022 | Decatur 1 N, US | daily snowfall | 3.8 cm (1.5 in) | 2.5 cm (1.0 in) | 24 years | 20 of 100 (Routine) |
Climate Trend
20 complete years, 2006 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 2006 | 11.1 C | +0.47 C |
| 2007 | 10.5 C | -0.06 C |
| 2008 | 9.6 C | -1.02 C |
| 2009 | 9.7 C | -0.92 C |
| 2010 | 10.7 C | +0.06 C |
| 2011 | 10.8 C | +0.16 C |
| 2012 | 11.9 C | +1.32 C |
| 2013 | 9.9 C | -0.75 C |
| 2014 | 8.6 C | -2.04 C |
| 2015 | 10.2 C | -0.43 C |
| 2016 | 11.4 C | +0.82 C |
| 2017 | 11.2 C | +0.61 C |
| 2018 | 10.3 C | -0.26 C |
| 2019 | 10.2 C | -0.41 C |
| 2020 | 11.0 C | +0.39 C |
| 2021 | 11.1 C | +0.52 C |
| 2022 | 10.2 C | -0.38 C |
| 2023 | 11.4 C | +0.77 C |
| 2024 | 11.9 C | +1.28 C |
| 2025 | 10.4 C | -0.18 C |
This station does not have enough complete years (30 are needed) to fit a temperature trend.
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
1931 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 38.9 C (102.0 F) | 2012 | 34.4 C (93.9 F) | 31 |
| Coldest night (TNn) | -28.9 C (-20.0 F) | 1972 | -21.1 C (-6.0 F) | 31 |
| Wettest day (Rx1day) | 129.3 mm (5.1 in) | 2007 | 58.6 mm (2.3 in) | 96 |
| Wettest five days (Rx5day) | 188.1 mm (7.4 in) | 2015 | 84.5 mm (3.3 in) | 96 |
| Longest dry spell (CDD) | 35 days | 1932 | 18 days | 96 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1931 | n/a |
| 1932 | n/a |
| 1933 | n/a |
| 1934 | n/a |
| 1935 | n/a |
| 1936 | n/a |
| 1937 | n/a |
| 1938 | n/a |
| 1939 | n/a |
| 1940 | n/a |
| 1941 | n/a |
| 1942 | n/a |
| 1943 | n/a |
| 1944 | n/a |
| 1945 | n/a |
| 1946 | n/a |
| 1947 | n/a |
| 1948 | n/a |
| 1949 | n/a |
| 1950 | n/a |
| 1951 | n/a |
| 1952 | n/a |
| 1953 | n/a |
| 1954 | n/a |
| 1955 | n/a |
| 1956 | n/a |
| 1957 | n/a |
| 1958 | n/a |
| 1959 | n/a |
| 1960 | n/a |
| 1961 | n/a |
| 1962 | n/a |
| 1963 | n/a |
| 1964 | n/a |
| 1965 | n/a |
| 1966 | n/a |
| 1967 | n/a |
| 1968 | n/a |
| 1969 | n/a |
| 1970 | n/a |
| 1971 | n/a |
| 1972 | 35.6 C (96.1 F) |
| 1973 | 36.7 C (98.1 F) |
| 1974 | 21.7 C (71.1 F) |
| 1975 | n/a |
| 1976 | 37.2 C (99.0 F) |
| 1977 | 10.0 C (50.0 F) |
| 1978 | 3.9 C (39.0 F) |
| 1979 | 23.9 C (75.0 F) |
| 1980 | 38.3 C (100.9 F) |
| 1981 | 22.2 C (72.0 F) |
| 1982 | n/a |
| 1983 | n/a |
| 1984 | n/a |
| 1985 | n/a |
| 1986 | n/a |
| 1987 | n/a |
| 1988 | n/a |
| 1989 | n/a |
| 1990 | n/a |
| 1991 | n/a |
| 1992 | n/a |
| 1993 | n/a |
| 1994 | n/a |
| 1995 | n/a |
| 1996 | n/a |
| 1997 | n/a |
| 1998 | n/a |
| 1999 | n/a |
| 2000 | n/a |
| 2001 | n/a |
| 2002 | n/a |
| 2003 | n/a |
| 2004 | n/a |
| 2005 | 33.9 C (93.0 F) |
| 2006 | 35.0 C (95.0 F) |
| 2007 | 34.4 C (93.9 F) |
| 2008 | 36.7 C (98.1 F) |
| 2009 | 34.4 C (93.9 F) |
| 2010 | 35.6 C (96.1 F) |
| 2011 | 37.8 C (100.0 F) |
| 2012 | 38.9 C (102.0 F) |
| 2013 | 35.6 C (96.1 F) |
| 2014 | 33.3 C (91.9 F) |
| 2015 | 32.8 C (91.0 F) |
| 2016 | 33.9 C (93.0 F) |
| 2017 | 33.9 C (93.0 F) |
| 2018 | 35.0 C (95.0 F) |
| 2019 | 34.4 C (93.9 F) |
| 2020 | 34.4 C (93.9 F) |
| 2021 | 34.4 C (93.9 F) |
| 2022 | 36.1 C (97.0 F) |
| 2023 | 33.9 C (93.0 F) |
| 2024 | 35.6 C (96.1 F) |
| 2025 | 35.0 C (95.0 F) |
| 2026 | 35.0 C (95.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1931 | n/a |
| 1932 | n/a |
| 1933 | n/a |
| 1934 | n/a |
| 1935 | n/a |
| 1936 | n/a |
| 1937 | n/a |
| 1938 | n/a |
| 1939 | n/a |
| 1940 | n/a |
| 1941 | n/a |
| 1942 | n/a |
| 1943 | n/a |
| 1944 | n/a |
| 1945 | n/a |
| 1946 | n/a |
| 1947 | n/a |
| 1948 | n/a |
| 1949 | n/a |
| 1950 | n/a |
| 1951 | n/a |
| 1952 | n/a |
| 1953 | n/a |
| 1954 | n/a |
| 1955 | n/a |
| 1956 | n/a |
| 1957 | n/a |
| 1958 | n/a |
| 1959 | n/a |
| 1960 | n/a |
| 1961 | n/a |
| 1962 | n/a |
| 1963 | n/a |
| 1964 | n/a |
| 1965 | n/a |
| 1966 | n/a |
| 1967 | n/a |
| 1968 | n/a |
| 1969 | n/a |
| 1970 | n/a |
| 1971 | n/a |
| 1972 | -28.9 C (-20.0 F) |
| 1973 | 10.0 C (50.0 F) |
| 1974 | -19.4 C (-2.9 F) |
| 1975 | n/a |
| 1976 | -24.4 C (-11.9 F) |
| 1977 | -23.9 C (-11.0 F) |
| 1978 | -24.4 C (-11.9 F) |
| 1979 | -26.7 C (-16.1 F) |
| 1980 | -20.6 C (-5.1 F) |
| 1981 | -10.0 C (14.0 F) |
| 1982 | n/a |
| 1983 | n/a |
| 1984 | n/a |
| 1985 | n/a |
| 1986 | n/a |
| 1987 | n/a |
| 1988 | n/a |
| 1989 | n/a |
| 1990 | n/a |
| 1991 | n/a |
| 1992 | n/a |
| 1993 | n/a |
| 1994 | n/a |
| 1995 | n/a |
| 1996 | n/a |
| 1997 | n/a |
| 1998 | n/a |
| 1999 | n/a |
| 2000 | n/a |
| 2001 | n/a |
| 2002 | n/a |
| 2003 | n/a |
| 2004 | n/a |
| 2005 | -18.3 C (-0.9 F) |
| 2006 | -15.6 C (3.9 F) |
| 2007 | -24.4 C (-11.9 F) |
| 2008 | -19.4 C (-2.9 F) |
| 2009 | -27.2 C (-17.0 F) |
| 2010 | -21.1 C (-6.0 F) |
| 2011 | -21.7 C (-7.1 F) |
| 2012 | -15.6 C (3.9 F) |
| 2013 | -17.2 C (1.0 F) |
| 2014 | -28.3 C (-18.9 F) |
| 2015 | -22.2 C (-8.0 F) |
| 2016 | -20.0 C (-4.0 F) |
| 2017 | -21.7 C (-7.1 F) |
| 2018 | -25.0 C (-13.0 F) |
| 2019 | -26.7 C (-16.1 F) |
| 2020 | -17.2 C (1.0 F) |
| 2021 | -20.6 C (-5.1 F) |
| 2022 | -22.8 C (-9.0 F) |
| 2023 | -13.3 C (8.1 F) |
| 2024 | -21.1 C (-6.0 F) |
| 2025 | -20.0 C (-4.0 F) |
| 2026 | -23.3 C (-9.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1931 | 39.9 mm (1.6 in) |
| 1932 | 66.5 mm (2.6 in) |
| 1933 | 72.6 mm (2.9 in) |
| 1934 | 48.3 mm (1.9 in) |
| 1935 | 62.2 mm (2.4 in) |
| 1936 | 34.8 mm (1.4 in) |
| 1937 | 46.7 mm (1.8 in) |
| 1938 | 93.0 mm (3.7 in) |
| 1939 | 58.7 mm (2.3 in) |
| 1940 | 36.6 mm (1.4 in) |
| 1941 | 48.5 mm (1.9 in) |
| 1942 | 42.7 mm (1.7 in) |
| 1943 | 114.6 mm (4.5 in) |
| 1944 | 43.2 mm (1.7 in) |
| 1945 | 60.7 mm (2.4 in) |
| 1946 | 63.0 mm (2.5 in) |
| 1947 | 70.9 mm (2.8 in) |
| 1948 | 37.3 mm (1.5 in) |
| 1949 | 82.6 mm (3.3 in) |
| 1950 | 100.6 mm (4.0 in) |
| 1951 | 46.2 mm (1.8 in) |
| 1952 | 73.7 mm (2.9 in) |
| 1953 | 50.0 mm (2.0 in) |
| 1954 | 84.1 mm (3.3 in) |
| 1955 | 58.4 mm (2.3 in) |
| 1956 | 106.7 mm (4.2 in) |
| 1957 | 71.1 mm (2.8 in) |
| 1958 | 53.8 mm (2.1 in) |
| 1959 | 77.7 mm (3.1 in) |
| 1960 | 55.4 mm (2.2 in) |
| 1961 | 46.7 mm (1.8 in) |
| 1962 | 47.0 mm (1.9 in) |
| 1963 | 50.5 mm (2.0 in) |
| 1964 | 68.8 mm (2.7 in) |
| 1965 | 54.4 mm (2.1 in) |
| 1966 | 71.1 mm (2.8 in) |
| 1967 | 37.3 mm (1.5 in) |
| 1968 | 62.0 mm (2.4 in) |
| 1969 | 72.9 mm (2.9 in) |
| 1970 | 30.0 mm (1.2 in) |
| 1971 | 54.6 mm (2.1 in) |
| 1972 | 43.9 mm (1.7 in) |
| 1973 | 36.1 mm (1.4 in) |
| 1974 | 48.8 mm (1.9 in) |
| 1975 | 64.8 mm (2.6 in) |
| 1976 | 32.3 mm (1.3 in) |
| 1977 | 46.2 mm (1.8 in) |
| 1978 | 41.9 mm (1.6 in) |
| 1979 | 49.5 mm (1.9 in) |
| 1980 | 85.3 mm (3.4 in) |
| 1981 | 82.6 mm (3.3 in) |
| 1982 | 31.8 mm (1.3 in) |
| 1983 | 47.2 mm (1.9 in) |
| 1984 | 40.4 mm (1.6 in) |
| 1985 | 46.2 mm (1.8 in) |
| 1986 | 71.6 mm (2.8 in) |
| 1987 | 42.2 mm (1.7 in) |
| 1988 | 36.3 mm (1.4 in) |
| 1989 | 81.0 mm (3.2 in) |
| 1990 | 64.5 mm (2.5 in) |
| 1991 | 85.6 mm (3.4 in) |
| 1992 | 79.2 mm (3.1 in) |
| 1993 | 64.0 mm (2.5 in) |
| 1994 | 40.6 mm (1.6 in) |
| 1995 | 33.5 mm (1.3 in) |
| 1996 | 66.5 mm (2.6 in) |
| 1997 | 71.6 mm (2.8 in) |
| 1998 | 85.3 mm (3.4 in) |
| 1999 | 41.4 mm (1.6 in) |
| 2000 | 62.7 mm (2.5 in) |
| 2001 | 74.9 mm (2.9 in) |
| 2002 | 42.7 mm (1.7 in) |
| 2003 | 77.0 mm (3.0 in) |
| 2004 | 95.8 mm (3.8 in) |
| 2005 | 52.8 mm (2.1 in) |
| 2006 | 51.6 mm (2.0 in) |
| 2007 | 129.3 mm (5.1 in) |
| 2008 | 100.8 mm (4.0 in) |
| 2009 | 76.2 mm (3.0 in) |
| 2010 | 63.2 mm (2.5 in) |
| 2011 | 55.9 mm (2.2 in) |
| 2012 | 53.6 mm (2.1 in) |
| 2013 | 70.9 mm (2.8 in) |
| 2014 | 64.3 mm (2.5 in) |
| 2015 | 95.5 mm (3.8 in) |
| 2016 | 29.7 mm (1.2 in) |
| 2017 | 53.8 mm (2.1 in) |
| 2018 | 81.5 mm (3.2 in) |
| 2019 | 93.2 mm (3.7 in) |
| 2020 | 103.1 mm (4.1 in) |
| 2021 | 54.9 mm (2.2 in) |
| 2022 | 44.5 mm (1.8 in) |
| 2023 | 73.9 mm (2.9 in) |
| 2024 | 45.7 mm (1.8 in) |
| 2025 | 49.8 mm (2.0 in) |
| 2026 | 64.8 mm (2.6 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1931 | 40.7 mm (1.6 in) |
| 1932 | 79.7 mm (3.1 in) |
| 1933 | 80.8 mm (3.2 in) |
| 1934 | 75.7 mm (3.0 in) |
| 1935 | 89.8 mm (3.5 in) |
| 1936 | 45.0 mm (1.8 in) |
| 1937 | 78.1 mm (3.1 in) |
| 1938 | 96.0 mm (3.8 in) |
| 1939 | 115.3 mm (4.5 in) |
| 1940 | 61.4 mm (2.4 in) |
| 1941 | 105.4 mm (4.1 in) |
| 1942 | 76.2 mm (3.0 in) |
| 1943 | 133.9 mm (5.3 in) |
| 1944 | 76.7 mm (3.0 in) |
| 1945 | 114.8 mm (4.5 in) |
| 1946 | 64.5 mm (2.5 in) |
| 1947 | 93.1 mm (3.7 in) |
| 1948 | 77.5 mm (3.1 in) |
| 1949 | 115.3 mm (4.5 in) |
| 1950 | 139.6 mm (5.5 in) |
| 1951 | 56.9 mm (2.2 in) |
| 1952 | 113.3 mm (4.5 in) |
| 1953 | 57.6 mm (2.3 in) |
| 1954 | 104.4 mm (4.1 in) |
| 1955 | 94.0 mm (3.7 in) |
| 1956 | 117.9 mm (4.6 in) |
| 1957 | 106.1 mm (4.2 in) |
| 1958 | 161.7 mm (6.4 in) |
| 1959 | 104.4 mm (4.1 in) |
| 1960 | 78.0 mm (3.1 in) |
| 1961 | 78.2 mm (3.1 in) |
| 1962 | 62.7 mm (2.5 in) |
| 1963 | 67.9 mm (2.7 in) |
| 1964 | 81.2 mm (3.2 in) |
| 1965 | 70.2 mm (2.8 in) |
| 1966 | 125.5 mm (4.9 in) |
| 1967 | 59.5 mm (2.3 in) |
| 1968 | 88.5 mm (3.5 in) |
| 1969 | 85.1 mm (3.4 in) |
| 1970 | 69.6 mm (2.7 in) |
| 1971 | 83.5 mm (3.3 in) |
| 1972 | 81.1 mm (3.2 in) |
| 1973 | 76.5 mm (3.0 in) |
| 1974 | 64.8 mm (2.6 in) |
| 1975 | 92.8 mm (3.7 in) |
| 1976 | 57.4 mm (2.3 in) |
| 1977 | 68.8 mm (2.7 in) |
| 1978 | 48.0 mm (1.9 in) |
| 1979 | 68.6 mm (2.7 in) |
| 1980 | 121.1 mm (4.8 in) |
| 1981 | 92.0 mm (3.6 in) |
| 1982 | 50.1 mm (2.0 in) |
| 1983 | 59.9 mm (2.4 in) |
| 1984 | 58.0 mm (2.3 in) |
| 1985 | 69.4 mm (2.7 in) |
| 1986 | 88.1 mm (3.5 in) |
| 1987 | 71.1 mm (2.8 in) |
| 1988 | 45.7 mm (1.8 in) |
| 1989 | 105.3 mm (4.1 in) |
| 1990 | 67.3 mm (2.6 in) |
| 1991 | 125.5 mm (4.9 in) |
| 1992 | 126.4 mm (5.0 in) |
| 1993 | 96.8 mm (3.8 in) |
| 1994 | 68.3 mm (2.7 in) |
| 1995 | 87.7 mm (3.5 in) |
| 1996 | 127.9 mm (5.0 in) |
| 1997 | 89.9 mm (3.5 in) |
| 1998 | 134.1 mm (5.3 in) |
| 1999 | 52.1 mm (2.1 in) |
| 2000 | 131.4 mm (5.2 in) |
| 2001 | 102.9 mm (4.1 in) |
| 2002 | 67.0 mm (2.6 in) |
| 2003 | 178.1 mm (7.0 in) |
| 2004 | 187.3 mm (7.4 in) |
| 2005 | 79.8 mm (3.1 in) |
| 2006 | 66.7 mm (2.6 in) |
| 2007 | 179.3 mm (7.1 in) |
| 2008 | 126.2 mm (5.0 in) |
| 2009 | 135.5 mm (5.3 in) |
| 2010 | 88.9 mm (3.5 in) |
| 2011 | 87.8 mm (3.5 in) |
| 2012 | 66.8 mm (2.6 in) |
| 2013 | 84.4 mm (3.3 in) |
| 2014 | 73.2 mm (2.9 in) |
| 2015 | 188.1 mm (7.4 in) |
| 2016 | 63.8 mm (2.5 in) |
| 2017 | 111.2 mm (4.4 in) |
| 2018 | 145.5 mm (5.7 in) |
| 2019 | 126.8 mm (5.0 in) |
| 2020 | 127.6 mm (5.0 in) |
| 2021 | 76.0 mm (3.0 in) |
| 2022 | 74.6 mm (2.9 in) |
| 2023 | 82.0 mm (3.2 in) |
| 2024 | 84.6 mm (3.3 in) |
| 2025 | 91.5 mm (3.6 in) |
| 2026 | 161.0 mm (6.3 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1931 | 27 days |
| 1932 | 35 days |
| 1933 | 17 days |
| 1934 | 20 days |
| 1935 | 16 days |
| 1936 | 16 days |
| 1937 | 14 days |
| 1938 | 20 days |
| 1939 | 17 days |
| 1940 | 16 days |
| 1941 | 26 days |
| 1942 | 24 days |
| 1943 | 29 days |
| 1944 | 32 days |
| 1945 | 19 days |
| 1946 | 19 days |
| 1947 | 16 days |
| 1948 | 31 days |
| 1949 | 21 days |
| 1950 | 15 days |
| 1951 | 20 days |
| 1952 | 21 days |
| 1953 | 26 days |
| 1954 | 17 days |
| 1955 | 22 days |
| 1956 | 28 days |
| 1957 | 22 days |
| 1958 | 22 days |
| 1959 | 12 days |
| 1960 | 12 days |
| 1961 | 13 days |
| 1962 | 18 days |
| 1963 | 32 days |
| 1964 | 17 days |
| 1965 | 14 days |
| 1966 | 20 days |
| 1967 | 18 days |
| 1968 | 17 days |
| 1969 | 25 days |
| 1970 | 20 days |
| 1971 | 13 days |
| 1972 | 23 days |
| 1973 | 14 days |
| 1974 | 14 days |
| 1975 | 16 days |
| 1976 | 27 days |
| 1977 | 31 days |
| 1978 | 16 days |
| 1979 | 17 days |
| 1980 | 16 days |
| 1981 | 24 days |
| 1982 | 11 days |
| 1983 | 27 days |
| 1984 | 15 days |
| 1985 | 21 days |
| 1986 | 15 days |
| 1987 | 28 days |
| 1988 | 25 days |
| 1989 | 34 days |
| 1990 | 13 days |
| 1991 | 15 days |
| 1992 | 20 days |
| 1993 | 18 days |
| 1994 | 14 days |
| 1995 | 32 days |
| 1996 | 19 days |
| 1997 | 11 days |
| 1998 | 19 days |
| 1999 | 21 days |
| 2000 | 14 days |
| 2001 | 26 days |
| 2002 | 25 days |
| 2003 | 21 days |
| 2004 | 21 days |
| 2005 | 15 days |
| 2006 | 16 days |
| 2007 | 14 days |
| 2008 | 25 days |
| 2009 | 17 days |
| 2010 | 18 days |
| 2011 | 18 days |
| 2012 | 21 days |
| 2013 | 19 days |
| 2014 | 14 days |
| 2015 | 19 days |
| 2016 | 15 days |
| 2017 | 14 days |
| 2018 | 14 days |
| 2019 | 13 days |
| 2020 | 15 days |
| 2021 | 15 days |
| 2022 | 14 days |
| 2023 | 22 days |
| 2024 | 16 days |
| 2025 | 24 days |
| 2026 | 12 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
20 years with a frostAcross 20 years with a frost, the median last spring frost at Decatur 1 N falls on 28 April and the median first autumn frost on 21 October, which leaves a median of 174 days between them.
| Measure | Median, all years | Earliest period | Recent period (2006 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 28 April | n/a | 28 April | n/a | n/a |
| First autumn frost | 21 October | n/a | 21 October | n/a | n/a |
| Growing days | 174 days | n/a | 174 days | n/a | n/a |
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
93 years, 1933 to 2025A day with at least 58.5 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 127.4 mm (5.0 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 58.5 mm (2.3 in) | |
| 5 years | 77.7 mm (3.1 in) | |
| 10 years | 90.1 mm (3.5 in) | |
| 25 years | 105.4 mm (4.1 in) | |
| 50 years | 116.6 mm (4.6 in) | |
| 100 years | 127.4 mm (5.0 in) | Longer than the 93 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, 93 years of values from 1933 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: 129.3 mm (5.1 in) in 2007; 114.6 mm (4.5 in) in 1943; 106.7 mm (4.2 in) in 1956.
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 (2026-10-12).