Springdale Weather Records (USC00247800)
Record envelope, standing records and threshold days for Springdale (USC00247800), Montana, United States, with 76 years of record.
Key Facts for Springdale
- Springdale (USC00247800) is a weather station in Montana, United States at 45.74 latitude and -110.22 longitude, 1,291 m (4,235 ft) above sea level.
- The station reports from 1951 to 2026, 76 years of record.
- 1,464 records set at Springdale still stand.
- Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Springdale set a daily record precipitation of 38.1 mm (1.5 in) on 31 May 2026.
About the Station
- Location: Montana, United States, 45.74 latitude, -110.22 longitude.
- Elevation: 1,291 m (4,235 ft).
- Period of record: 1951 to 2026, 76 years.
- Eligible elements: prcp, snow, snwd.
Daily Record Envelope and 2026
103 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 16.7 C (62.1 F) | -37.2 C (-35.0 F) | 15.0 C (59.0 F) | -23.3 C (-9.9 F) |
| Feb | 18.9 C (66.0 F) | -38.3 C (-36.9 F) | 18.9 C (66.0 F) | -23.3 C (-9.9 F) |
| Mar | 26.1 C (79.0 F) | -25.0 C (-13.0 F) | 26.1 C (79.0 F) | -17.8 C (0.0 F) |
| Apr | 26.7 C (80.1 F) | -21.7 C (-7.1 F) | 26.7 C (80.1 F) | -7.8 C (18.0 F) |
| May | 30.6 C (87.1 F) | -9.4 C (15.1 F) | 30.6 C (87.1 F) | -7.2 C (19.0 F) |
| Jun | 36.1 C (97.0 F) | 0.0 C (32.0 F) | 30.0 C (86.0 F) | 3.3 C (37.9 F) |
| Jul | 38.3 C (100.9 F) | 5.0 C (41.0 F) | 38.3 C (100.9 F) | 7.8 C (46.0 F) |
| Aug | 38.3 C (100.9 F) | 2.2 C (36.0 F) | 38.3 C (100.9 F) | 3.3 C (37.9 F) |
| Sep | 37.2 C (99.0 F) | -3.9 C (25.0 F) | 30.0 C (86.0 F) | 0.0 C (32.0 F) |
| Oct | 29.4 C (84.9 F) | -25.6 C (-14.1 F) | 29.4 C (84.9 F) | 1.7 C (35.1 F) |
| Nov | 23.3 C (73.9 F) | -23.9 C (-11.0 F) | n/a | n/a |
| Dec | 17.8 C (64.0 F) | -36.7 C (-34.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 2019 | 153 |
| 2020 | 186 |
| 2021 | 223 |
| 2022 | 231 |
| 2023 | 175 |
| 2024 | 170 |
| 2025 | 186 |
| 2026 | 140 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 1985-03-02 | Record daily snowfall | Record daily snowfall 45.7 cm (18.0 in) |
| 2011-05-25 | Record daily precipitation | Record daily precipitation 61.0 mm (2.4 in) |
| 2017-05-18 | Record daily precipitation | Record daily precipitation 65.0 mm (2.6 in) |
| 2025-02-15 | Record snow depth | Record snow depth 43.2 cm (17.0 in) |
| 2025-02-17 | Record snow depth | Record snow depth 55.9 cm (22.0 in) |
| 2025-02-18 | Record snow depth | Record snow depth 63.5 cm (25.0 in) |
Wettest Day of Each Month
May: 65.0 mm (2.6 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 16.8 mm (0.7 in) | 10 January 1997 |
| Feb | 17.3 mm (0.7 in) | 29 February 2004 |
| Mar | 51.8 mm (2.0 in) | 4 March 2018 |
| Apr | 35.6 mm (1.4 in) | 27 April 1989 |
| May | 65.0 mm (2.6 in) | 18 May 2017 |
| Jun | 57.2 mm (2.3 in) | 25 June 1969 |
| Jul | 52.3 mm (2.1 in) | 26 July 2007 |
| Aug | 33.8 mm (1.3 in) | 24 August 1972 |
| Sep | 37.6 mm (1.5 in) | 18 September 1976 |
| Oct | 51.8 mm (2.0 in) | 31 October 1974 |
| Nov | 31.2 mm (1.2 in) | 8 November 2020 |
| Dec | 50.8 mm (2.0 in) | 23 December 2009 |
Period of Record Coverage
2019 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 2019 | 257 | 70% | No |
| 2020 | 363 | 99% | Yes |
| 2021 | 361 | 99% | Yes |
| 2022 | 362 | 99% | Yes |
| 2023 | 365 | 100% | Yes |
| 2024 | 366 | 100% | Yes |
| 2025 | 364 | 100% | Yes |
| 2026 | 281 | 77% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 31 May 2026 | Springdale, US | daily rain | 38.1 mm (1.5 in) | 20.3 mm (0.8 in) | 72 years | 51 of 100 (Notable) |
| 9 February 2026 | Springdale, US | daily rain | 11.4 mm (0.4 in) | 4.8 mm (0.19 in) | 19 years | 20 of 100 (Routine) |
| 12 December 2025 | Springdale, US | daily rain | 10.7 mm (0.4 in) | 7.1 mm (0.28 in) | 67 years | 20 of 100 (Routine) |
| 16 September 2025 | Springdale, US | daily rain | 32.3 mm (1.3 in) | 10.7 mm (0.4 in) | 19 years | 29 of 100 (Routine) |
| 28 April 2025 | Springdale, US | daily rain | 33.0 mm (1.3 in) | 23.6 mm (0.9 in) | 71 years | 68 of 100 (Major) |
| 17 April 2025 | Springdale, US | daily snowfall | 12.7 cm (5.0 in) | 7.6 cm (3.0 in) | 59 years | 34 of 100 (Routine) |
| 27 February 2025 | Springdale, US | daily snow depth | 10.2 cm (4.0 in) | 2.6 cm (1.0 in) | 70 years | 31 of 100 (Routine) |
| 25 February 2025 | Springdale, US | daily snow depth | 25.4 cm (10.0 in) | 2.5 cm (1.0 in) | 38 years | 21 of 100 (Routine) |
| 24 February 2025 | Springdale, US | daily snow depth | 38.1 cm (15.0 in) | 15.2 cm (6.0 in) | 38 years | 41 of 100 (Notable) |
| 23 February 2025 | Springdale, US | daily snow depth | 45.7 cm (18.0 in) | 25.4 cm (10.0 in) | 10 years | 49 of 100 (Notable) |
| 22 February 2025 | Springdale, US | daily snow depth | 55.9 cm (22.0 in) | 30.5 cm (12.0 in) | 10 years | 50 of 100 (Notable) |
| 21 February 2025 | Springdale, US | all-time snow depth (Tie) | 63.5 cm (25.0 in) | tie | 0 years | 6 of 100 (Routine) |
| 20 February 2025 | Springdale, US | all-time snow depth (Tie) | 63.5 cm (25.0 in) | tie | 0 years | 6 of 100 (Routine) |
| 19 February 2025 | Springdale, US | all-time snow depth (Tie) | 63.5 cm (25.0 in) | tie | 0 years | 6 of 100 (Routine) |
| 18 February 2025 | Springdale, US | all-time snow depth | 63.5 cm (25.0 in) | 7.6 cm (3.0 in) | 0 years | 38 of 100 (Notable) |
| 17 February 2025 | Springdale, US | all-time snow depth | 55.9 cm (22.0 in) | 12.7 cm (5.0 in) | 0 years | 46 of 100 (Notable) |
| 16 February 2025 | Springdale, US | daily snow depth | 40.6 cm (16.0 in) | 22.8 cm (9.0 in) | 4 years | 43 of 100 (Notable) |
| 15 February 2025 | Springdale, US | all-time snow depth | 43.2 cm (17.0 in) | 2.6 cm (1.0 in) | 69 years | 50 of 100 (Notable) |
| 14 February 2025 | Springdale, US | all-time snow depth (Tie) | 40.6 cm (16.0 in) | tie | 69 years | 11 of 100 (Routine) |
| 13 February 2025 | Springdale, US | all-time snow depth (Tie) | 40.6 cm (16.0 in) | tie | 69 years | 11 of 100 (Routine) |
Extremes by Year
1951 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 38.3 C (100.9 F) | 2026 | 36.7 C (98.1 F) | 8 |
| Coldest night (TNn) | -38.3 C (-36.9 F) | 2021 | -31.4 C (-24.5 F) | 8 |
| Wettest day (Rx1day) | 65.0 mm (2.6 in) | 2017 | 30.0 mm (1.2 in) | 76 |
| Wettest five days (Rx5day) | 110.8 mm (4.4 in) | 2011 | 46.5 mm (1.8 in) | 76 |
| Longest dry spell (CDD) | 68 days | 1954 | 30 days | 76 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 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 | n/a |
| 1973 | n/a |
| 1974 | n/a |
| 1975 | n/a |
| 1976 | n/a |
| 1977 | n/a |
| 1978 | n/a |
| 1979 | n/a |
| 1980 | n/a |
| 1981 | n/a |
| 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 | n/a |
| 2006 | n/a |
| 2007 | n/a |
| 2008 | n/a |
| 2009 | n/a |
| 2010 | n/a |
| 2011 | n/a |
| 2012 | n/a |
| 2013 | n/a |
| 2014 | n/a |
| 2015 | n/a |
| 2016 | n/a |
| 2017 | n/a |
| 2018 | n/a |
| 2019 | 33.9 C (93.0 F) |
| 2020 | 36.7 C (98.1 F) |
| 2021 | 37.2 C (99.0 F) |
| 2022 | 37.2 C (99.0 F) |
| 2023 | 35.6 C (96.1 F) |
| 2024 | 36.7 C (98.1 F) |
| 2025 | 35.6 C (96.1 F) |
| 2026 | 38.3 C (100.9 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 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 | n/a |
| 1973 | n/a |
| 1974 | n/a |
| 1975 | n/a |
| 1976 | n/a |
| 1977 | n/a |
| 1978 | n/a |
| 1979 | n/a |
| 1980 | n/a |
| 1981 | n/a |
| 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 | n/a |
| 2006 | n/a |
| 2007 | n/a |
| 2008 | n/a |
| 2009 | n/a |
| 2010 | n/a |
| 2011 | n/a |
| 2012 | n/a |
| 2013 | n/a |
| 2014 | n/a |
| 2015 | n/a |
| 2016 | n/a |
| 2017 | n/a |
| 2018 | n/a |
| 2019 | -25.6 C (-14.1 F) |
| 2020 | -25.6 C (-14.1 F) |
| 2021 | -38.3 C (-36.9 F) |
| 2022 | -36.7 C (-34.1 F) |
| 2023 | -31.1 C (-24.0 F) |
| 2024 | -37.2 C (-35.0 F) |
| 2025 | -31.7 C (-25.1 F) |
| 2026 | -23.3 C (-9.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1951 | 19.1 mm (0.8 in) |
| 1952 | 34.3 mm (1.4 in) |
| 1953 | 23.4 mm (0.9 in) |
| 1954 | 17.8 mm (0.7 in) |
| 1955 | 41.7 mm (1.6 in) |
| 1956 | 16.3 mm (0.6 in) |
| 1957 | 56.4 mm (2.2 in) |
| 1958 | 24.9 mm (1.0 in) |
| 1959 | 21.1 mm (0.8 in) |
| 1960 | 25.9 mm (1.0 in) |
| 1961 | 22.4 mm (0.9 in) |
| 1962 | 19.3 mm (0.8 in) |
| 1963 | 30.7 mm (1.2 in) |
| 1964 | 25.9 mm (1.0 in) |
| 1965 | 27.9 mm (1.1 in) |
| 1966 | 19.3 mm (0.8 in) |
| 1967 | 35.6 mm (1.4 in) |
| 1968 | 23.4 mm (0.9 in) |
| 1969 | 57.2 mm (2.3 in) |
| 1970 | 41.7 mm (1.6 in) |
| 1971 | 33.5 mm (1.3 in) |
| 1972 | 33.8 mm (1.3 in) |
| 1973 | 20.6 mm (0.8 in) |
| 1974 | 51.8 mm (2.0 in) |
| 1975 | 34.3 mm (1.4 in) |
| 1976 | 37.6 mm (1.5 in) |
| 1977 | 25.9 mm (1.0 in) |
| 1978 | 36.8 mm (1.4 in) |
| 1979 | 31.8 mm (1.3 in) |
| 1980 | 49.8 mm (2.0 in) |
| 1981 | 57.2 mm (2.3 in) |
| 1982 | 24.9 mm (1.0 in) |
| 1983 | 42.4 mm (1.7 in) |
| 1984 | 36.8 mm (1.4 in) |
| 1985 | 16.0 mm (0.6 in) |
| 1986 | 27.4 mm (1.1 in) |
| 1987 | 19.8 mm (0.8 in) |
| 1988 | 21.8 mm (0.9 in) |
| 1989 | 35.6 mm (1.4 in) |
| 1990 | 16.8 mm (0.7 in) |
| 1991 | 24.9 mm (1.0 in) |
| 1992 | 48.8 mm (1.9 in) |
| 1993 | 35.8 mm (1.4 in) |
| 1994 | 39.4 mm (1.6 in) |
| 1995 | 15.2 mm (0.6 in) |
| 1996 | 52.6 mm (2.1 in) |
| 1997 | 22.9 mm (0.9 in) |
| 1998 | 26.2 mm (1.0 in) |
| 1999 | 18.0 mm (0.7 in) |
| 2000 | 27.4 mm (1.1 in) |
| 2001 | 46.2 mm (1.8 in) |
| 2002 | 22.9 mm (0.9 in) |
| 2003 | 23.4 mm (0.9 in) |
| 2004 | 32.3 mm (1.3 in) |
| 2005 | 50.3 mm (2.0 in) |
| 2006 | 28.2 mm (1.1 in) |
| 2007 | 52.3 mm (2.1 in) |
| 2008 | 50.8 mm (2.0 in) |
| 2009 | 50.8 mm (2.0 in) |
| 2010 | 23.6 mm (0.9 in) |
| 2011 | 61.0 mm (2.4 in) |
| 2012 | 20.6 mm (0.8 in) |
| 2013 | 25.1 mm (1.0 in) |
| 2014 | 35.3 mm (1.4 in) |
| 2015 | 27.9 mm (1.1 in) |
| 2016 | 28.4 mm (1.1 in) |
| 2017 | 65.0 mm (2.6 in) |
| 2018 | 51.8 mm (2.0 in) |
| 2019 | 28.7 mm (1.1 in) |
| 2020 | 31.2 mm (1.2 in) |
| 2021 | 20.3 mm (0.8 in) |
| 2022 | 29.2 mm (1.1 in) |
| 2023 | 37.1 mm (1.5 in) |
| 2024 | 43.2 mm (1.7 in) |
| 2025 | 33.0 mm (1.3 in) |
| 2026 | 38.1 mm (1.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1951 | 44.0 mm (1.7 in) |
| 1952 | 46.5 mm (1.8 in) |
| 1953 | 33.8 mm (1.3 in) |
| 1954 | 26.1 mm (1.0 in) |
| 1955 | 58.9 mm (2.3 in) |
| 1956 | 26.8 mm (1.1 in) |
| 1957 | 62.7 mm (2.5 in) |
| 1958 | 34.0 mm (1.3 in) |
| 1959 | 39.4 mm (1.6 in) |
| 1960 | 30.0 mm (1.2 in) |
| 1961 | 32.1 mm (1.3 in) |
| 1962 | 37.1 mm (1.5 in) |
| 1963 | 48.5 mm (1.9 in) |
| 1964 | 75.2 mm (3.0 in) |
| 1965 | 51.7 mm (2.0 in) |
| 1966 | 23.4 mm (0.9 in) |
| 1967 | 59.1 mm (2.3 in) |
| 1968 | 44.2 mm (1.7 in) |
| 1969 | 85.4 mm (3.4 in) |
| 1970 | 53.9 mm (2.1 in) |
| 1971 | 65.8 mm (2.6 in) |
| 1972 | 50.3 mm (2.0 in) |
| 1973 | 22.1 mm (0.9 in) |
| 1974 | 75.6 mm (3.0 in) |
| 1975 | 58.4 mm (2.3 in) |
| 1976 | 59.0 mm (2.3 in) |
| 1977 | 55.6 mm (2.2 in) |
| 1978 | 53.5 mm (2.1 in) |
| 1979 | 49.3 mm (1.9 in) |
| 1980 | 77.5 mm (3.1 in) |
| 1981 | 76.6 mm (3.0 in) |
| 1982 | 46.5 mm (1.8 in) |
| 1983 | 46.3 mm (1.8 in) |
| 1984 | 36.8 mm (1.4 in) |
| 1985 | 22.8 mm (0.9 in) |
| 1986 | 39.6 mm (1.6 in) |
| 1987 | 40.6 mm (1.6 in) |
| 1988 | 25.4 mm (1.0 in) |
| 1989 | 55.1 mm (2.2 in) |
| 1990 | 32.2 mm (1.3 in) |
| 1991 | 34.9 mm (1.4 in) |
| 1992 | 103.9 mm (4.1 in) |
| 1993 | 64.5 mm (2.5 in) |
| 1994 | 61.5 mm (2.4 in) |
| 1995 | 43.4 mm (1.7 in) |
| 1996 | 86.6 mm (3.4 in) |
| 1997 | 48.6 mm (1.9 in) |
| 1998 | 42.0 mm (1.7 in) |
| 1999 | 32.2 mm (1.3 in) |
| 2000 | 36.3 mm (1.4 in) |
| 2001 | 93.2 mm (3.7 in) |
| 2002 | 36.7 mm (1.4 in) |
| 2003 | 25.7 mm (1.0 in) |
| 2004 | 53.8 mm (2.1 in) |
| 2005 | 100.9 mm (4.0 in) |
| 2006 | 39.6 mm (1.6 in) |
| 2007 | 54.3 mm (2.1 in) |
| 2008 | 97.3 mm (3.8 in) |
| 2009 | 50.8 mm (2.0 in) |
| 2010 | 37.1 mm (1.5 in) |
| 2011 | 110.8 mm (4.4 in) |
| 2012 | 34.3 mm (1.4 in) |
| 2013 | 41.0 mm (1.6 in) |
| 2014 | 40.1 mm (1.6 in) |
| 2015 | 59.9 mm (2.4 in) |
| 2016 | 30.3 mm (1.2 in) |
| 2017 | 70.6 mm (2.8 in) |
| 2018 | 61.2 mm (2.4 in) |
| 2019 | 37.2 mm (1.5 in) |
| 2020 | 35.1 mm (1.4 in) |
| 2021 | 33.5 mm (1.3 in) |
| 2022 | 46.5 mm (1.8 in) |
| 2023 | 77.5 mm (3.1 in) |
| 2024 | 77.0 mm (3.0 in) |
| 2025 | 41.4 mm (1.6 in) |
| 2026 | 60.3 mm (2.4 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1951 | 16 days |
| 1952 | 31 days |
| 1953 | 25 days |
| 1954 | 68 days |
| 1955 | 41 days |
| 1956 | 46 days |
| 1957 | 43 days |
| 1958 | 26 days |
| 1959 | 21 days |
| 1960 | 32 days |
| 1961 | 35 days |
| 1962 | 41 days |
| 1963 | 27 days |
| 1964 | 49 days |
| 1965 | 23 days |
| 1966 | 30 days |
| 1967 | 35 days |
| 1968 | 22 days |
| 1969 | 58 days |
| 1970 | 29 days |
| 1971 | 56 days |
| 1972 | 39 days |
| 1973 | 34 days |
| 1974 | 30 days |
| 1975 | 32 days |
| 1976 | 35 days |
| 1977 | 45 days |
| 1978 | 40 days |
| 1979 | 31 days |
| 1980 | 28 days |
| 1981 | 38 days |
| 1982 | 41 days |
| 1983 | 64 days |
| 1984 | 55 days |
| 1985 | 38 days |
| 1986 | 23 days |
| 1987 | 65 days |
| 1988 | 35 days |
| 1989 | 17 days |
| 1990 | 42 days |
| 1991 | 25 days |
| 1992 | 30 days |
| 1993 | 38 days |
| 1994 | 26 days |
| 1995 | 24 days |
| 1996 | 30 days |
| 1997 | 38 days |
| 1998 | 43 days |
| 1999 | 35 days |
| 2000 | 30 days |
| 2001 | 32 days |
| 2002 | 28 days |
| 2003 | 29 days |
| 2004 | 29 days |
| 2005 | 28 days |
| 2006 | 30 days |
| 2007 | 30 days |
| 2008 | 22 days |
| 2009 | 26 days |
| 2010 | 37 days |
| 2011 | 25 days |
| 2012 | 27 days |
| 2013 | 29 days |
| 2014 | 25 days |
| 2015 | 22 days |
| 2016 | 43 days |
| 2017 | 33 days |
| 2018 | 19 days |
| 2019 | 16 days |
| 2020 | 22 days |
| 2021 | 23 days |
| 2022 | 18 days |
| 2023 | 23 days |
| 2024 | 28 days |
| 2025 | 17 days |
| 2026 | 39 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.
Rainfall Return Levels
67 years, 1952 to 2025A day with at least 30.7 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 72.9 mm (2.9 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 30.7 mm (1.2 in) | |
| 5 years | 41.7 mm (1.6 in) | |
| 10 years | 49.2 mm (1.9 in) | |
| 25 years | 58.7 mm (2.3 in) | |
| 50 years | 65.8 mm (2.6 in) | |
| 100 years | 72.9 mm (2.9 in) | Longer than the 67 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, 67 years of values from 1952 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: 65.0 mm (2.6 in) in 2017; 57.2 mm (2.3 in) in 1969; 57.2 mm (2.3 in) in 1981.
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).