New Stanton 1 SW Weather Records (USC00366310)
Record envelope, standing records and threshold days for New Stanton 1 SW (USC00366310), Pennsylvania, United States, with 74 years of record.
Key Facts for New Stanton 1 SW
- New Stanton 1 SW (USC00366310) is a weather station in Pennsylvania, United States at 40.20 latitude and -79.63 longitude, 290 m (950 ft) above sea level.
- The station reports from 1952 to 2025, 74 years of record.
- 1,464 records set at New Stanton 1 SW still stand.
- Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
- New Stanton 1 SW set a daily record precipitation of 43.2 mm (1.7 in) on 4 April 2025.
About the Station
- Location: Pennsylvania, United States, 40.20 latitude, -79.63 longitude.
- Elevation: 290 m (950 ft).
- Period of record: 1952 to 2025, 74 years.
- Eligible elements: prcp, snow, snwd.
Daily Record Envelope and 2026
0 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 21.1 C (70.0 F) | -29.4 C (-20.9 F) | n/a | n/a |
| Feb | 22.2 C (72.0 F) | -25.0 C (-13.0 F) | n/a | n/a |
| Mar | 26.1 C (79.0 F) | -20.0 C (-4.0 F) | n/a | n/a |
| Apr | 32.2 C (90.0 F) | -8.3 C (17.1 F) | n/a | n/a |
| May | 36.1 C (97.0 F) | -4.4 C (24.1 F) | n/a | n/a |
| Jun | 37.8 C (100.0 F) | 1.1 C (34.0 F) | n/a | n/a |
| Jul | 37.2 C (99.0 F) | 4.4 C (39.9 F) | n/a | n/a |
| Aug | 37.2 C (99.0 F) | 3.3 C (37.9 F) | n/a | n/a |
| Sep | 38.9 C (102.0 F) | -2.2 C (28.0 F) | n/a | n/a |
| Oct | 31.7 C (89.1 F) | -10.0 C (14.0 F) | n/a | n/a |
| Nov | 29.4 C (84.9 F) | -16.1 C (3.0 F) | n/a | n/a |
| Dec | 22.2 C (72.0 F) | -23.3 C (-9.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1952 | 69 |
| 1953 | 79 |
| 1954 | 96 |
| 1955 | 92 |
| 1956 | 97 |
| 1957 | 83 |
| 1958 | 66 |
| 1959 | 112 |
| 1960 | 93 |
| 1961 | 91 |
| 1962 | 75 |
| 1963 | 83 |
| 1964 | 62 |
| 1965 | 73 |
| 1966 | 76 |
| 1967 | 74 |
| 1968 | 67 |
| 1969 | 37 |
| 1970 | 39 |
All-Time Record Progression
2 new records| Date | Kind | Detail |
|---|---|---|
| 1994-01-04 | Record snow depth | Record snow depth 50.8 cm (20.0 in) |
| 2010-02-06 | Record daily snowfall | Record daily snowfall 48.3 cm (19.0 in) |
Wettest Day of Each Month
Oct: 117.3 mm (4.6 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 57.7 mm (2.3 in) | 5 January 2005 |
| Feb | 53.3 mm (2.1 in) | 16 February 2018 |
| Mar | 45.7 mm (1.8 in) | 4 March 1955 |
| Apr | 71.1 mm (2.8 in) | 3 April 2024 |
| May | 58.4 mm (2.3 in) | 28 May 2014 |
| Jun | 70.6 mm (2.8 in) | 8 June 1955 |
| Jul | 79.2 mm (3.1 in) | 8 July 1986 |
| Aug | 83.8 mm (3.3 in) | 5 August 1956 |
| Sep | 108.0 mm (4.3 in) | 17 September 2004 |
| Oct | 117.3 mm (4.6 in) | 15 October 1954 |
| Nov | 57.2 mm (2.3 in) | 2 November 1999 |
| Dec | 73.7 mm (2.9 in) | 2 December 1991 |
Period of Record Coverage
1952 to 1970| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1952 | 294 | 80% | No |
| 1953 | 330 | 90% | Yes |
| 1954 | 360 | 99% | Yes |
| 1955 | 344 | 94% | Yes |
| 1956 | 365 | 100% | Yes |
| 1957 | 363 | 99% | Yes |
| 1958 | 364 | 100% | Yes |
| 1959 | 359 | 98% | Yes |
| 1960 | 362 | 99% | Yes |
| 1961 | 360 | 99% | Yes |
| 1962 | 360 | 99% | Yes |
| 1963 | 364 | 100% | Yes |
| 1964 | 332 | 91% | Yes |
| 1965 | 346 | 95% | Yes |
| 1966 | 359 | 98% | Yes |
| 1967 | 363 | 99% | Yes |
| 1968 | 362 | 99% | Yes |
| 1969 | 362 | 99% | Yes |
| 1970 | 243 | 67% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 4 April 2025 | New Stanton 1 SW, US | daily rain | 43.2 mm (1.7 in) | 18.3 mm (0.7 in) | 38 years | 40 of 100 (Notable) |
| 17 February 2025 | New Stanton 1 SW, US | daily rain | 11.9 mm (0.5 in) | 2.5 mm (0.10 in) | 39 years | 20 of 100 (Routine) |
| 11 November 2024 | New Stanton 1 SW, US | daily rain | 30.2 mm (1.2 in) | 10.1 mm (0.4 in) | 41 years | 31 of 100 (Routine) |
| 31 July 2024 | New Stanton 1 SW, US | daily rain | 36.8 mm (1.4 in) | 10.1 mm (0.4 in) | 21 years | 22 of 100 (Routine) |
| 3 April 2024 | New Stanton 1 SW, US | monthly rain | 71.1 mm (2.8 in) | 10.1 mm (0.4 in) | 42 years | 41 of 100 (Notable) |
| 17 February 2024 | New Stanton 1 SW, US | daily snowfall | 11.4 cm (4.5 in) | 6.3 cm (2.5 in) | 8 years | 21 of 100 (Routine) |
| 28 January 2024 | New Stanton 1 SW, US | daily rain | 22.1 mm (0.9 in) | 6.1 mm (0.24 in) | 14 years | 19 of 100 (Routine) |
| 15 August 2023 | New Stanton 1 SW, US | daily rain | 25.4 mm (1.0 in) | 1.5 mm (0.06 in) | 25 years | 15 of 100 (Routine) |
| 24 March 2023 | New Stanton 1 SW, US | daily rain | 30.0 mm (1.2 in) | 9.4 mm (0.37 in) | 10 years | 21 of 100 (Routine) |
| 31 January 2023 | New Stanton 1 SW, US | daily snowfall | 7.6 cm (3.0 in) | 3.0 cm (1.2 in) | 68 years | 32 of 100 (Routine) |
| 12 November 2022 | New Stanton 1 SW, US | daily rain | 43.2 mm (1.7 in) | 19.3 mm (0.8 in) | 16 years | 34 of 100 (Routine) |
| 2 October 2022 | New Stanton 1 SW, US | daily rain | 50.8 mm (2.0 in) | 30.5 mm (1.2 in) | 52 years | 54 of 100 (Notable) |
| 4 May 2022 | New Stanton 1 SW, US | daily rain (Tie) | 28.7 mm (1.1 in) | tie | 32 years | 4 of 100 (Routine) |
| 19 April 2022 | New Stanton 1 SW, US | daily rain | 19.1 mm (0.8 in) | 1.3 mm (0.05 in) | 24 years | 15 of 100 (Routine) |
| 28 March 2022 | New Stanton 1 SW, US | daily snowfall | 2.5 cm (1.0 in) | 2.5 cm (1.0 in) | 69 years | 20 of 100 (Routine) |
| 28 March 2022 | New Stanton 1 SW, US | daily snow depth | 2.5 cm (1.0 in) | 2.5 cm (1.0 in) | 69 years | 20 of 100 (Routine) |
| 25 February 2022 | New Stanton 1 SW, US | daily rain | 32.0 mm (1.3 in) | 8.6 mm (0.34 in) | 11 years | 21 of 100 (Routine) |
| 18 February 2022 | New Stanton 1 SW, US | daily rain | 25.7 mm (1.0 in) | 0.8 mm (0.03 in) | 22 years | 14 of 100 (Routine) |
| 4 February 2022 | New Stanton 1 SW, US | daily rain | 41.9 mm (1.6 in) | 14.7 mm (0.6 in) | 36 years | 36 of 100 (Notable) |
| 24 January 2022 | New Stanton 1 SW, US | daily snowfall (Tie) | 5.1 cm (2.0 in) | tie | 36 years | 4 of 100 (Routine) |
Climate Trend
13 complete years, 1954 to 1969| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1954 | 10.7 C | +0.56 C |
| 1956 | 10.4 C | +0.20 C |
| 1957 | 10.8 C | +0.60 C |
| 1958 | 9.2 C | -0.95 C |
| 1959 | 11.2 C | +1.05 C |
| 1960 | 10.0 C | -0.13 C |
| 1961 | 10.5 C | +0.34 C |
| 1962 | 10.1 C | -0.10 C |
| 1963 | 9.4 C | -0.77 C |
| 1966 | 10.0 C | -0.14 C |
| 1967 | 10.4 C | +0.20 C |
| 1968 | 9.6 C | -0.57 C |
| 1969 | 9.9 C | -0.28 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
1952 to 2025| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 38.9 C (102.0 F) | 1953 | 35.6 C (96.1 F) | 19 |
| Coldest night (TNn) | -29.4 C (-20.9 F) | 1963 | -21.7 C (-7.1 F) | 19 |
| Wettest day (Rx1day) | 117.3 mm (4.6 in) | 1954 | 49.9 mm (2.0 in) | 66 |
| Wettest five days (Rx5day) | 150.9 mm (5.9 in) | 2018 | 78.3 mm (3.1 in) | 66 |
| Longest dry spell (CDD) | 31 days | 1981 | 15 days | 66 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1952 | 35.6 C (96.1 F) |
| 1953 | 38.9 C (102.0 F) |
| 1954 | 36.7 C (98.1 F) |
| 1955 | 37.2 C (99.0 F) |
| 1956 | 36.1 C (97.0 F) |
| 1957 | 37.8 C (100.0 F) |
| 1958 | 33.3 C (91.9 F) |
| 1959 | 35.6 C (96.1 F) |
| 1960 | 33.9 C (93.0 F) |
| 1961 | 35.0 C (95.0 F) |
| 1962 | 36.1 C (97.0 F) |
| 1963 | 35.0 C (95.0 F) |
| 1964 | 37.2 C (99.0 F) |
| 1965 | 35.6 C (96.1 F) |
| 1966 | 37.2 C (99.0 F) |
| 1967 | 34.4 C (93.9 F) |
| 1968 | 35.6 C (96.1 F) |
| 1969 | 35.6 C (96.1 F) |
| 1970 | 33.9 C (93.0 F) |
| 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 | n/a |
| 2020 | n/a |
| 2021 | n/a |
| 2022 | n/a |
| 2023 | n/a |
| 2024 | n/a |
| 2025 | n/a |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1952 | -13.9 C (7.0 F) |
| 1953 | -13.3 C (8.1 F) |
| 1954 | -16.7 C (1.9 F) |
| 1955 | -25.0 C (-13.0 F) |
| 1956 | -15.0 C (5.0 F) |
| 1957 | -21.7 C (-7.1 F) |
| 1958 | -22.8 C (-9.0 F) |
| 1959 | -20.0 C (-4.0 F) |
| 1960 | -23.3 C (-9.9 F) |
| 1961 | -22.2 C (-8.0 F) |
| 1962 | -22.2 C (-8.0 F) |
| 1963 | -29.4 C (-20.9 F) |
| 1964 | -17.8 C (0.0 F) |
| 1965 | -22.8 C (-9.0 F) |
| 1966 | -23.3 C (-9.9 F) |
| 1967 | -20.0 C (-4.0 F) |
| 1968 | -25.0 C (-13.0 F) |
| 1969 | -15.6 C (3.9 F) |
| 1970 | -20.6 C (-5.1 F) |
| 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 | n/a |
| 2020 | n/a |
| 2021 | n/a |
| 2022 | n/a |
| 2023 | n/a |
| 2024 | n/a |
| 2025 | n/a |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1952 | 38.1 mm (1.5 in) |
| 1953 | 51.3 mm (2.0 in) |
| 1954 | 117.3 mm (4.6 in) |
| 1955 | 70.6 mm (2.8 in) |
| 1956 | 83.8 mm (3.3 in) |
| 1957 | 48.8 mm (1.9 in) |
| 1958 | 50.3 mm (2.0 in) |
| 1959 | 41.7 mm (1.6 in) |
| 1960 | 49.5 mm (1.9 in) |
| 1961 | 48.3 mm (1.9 in) |
| 1962 | 51.1 mm (2.0 in) |
| 1963 | 42.2 mm (1.7 in) |
| 1964 | 50.0 mm (2.0 in) |
| 1965 | 51.1 mm (2.0 in) |
| 1966 | 50.8 mm (2.0 in) |
| 1967 | 38.1 mm (1.5 in) |
| 1968 | 38.1 mm (1.5 in) |
| 1969 | 50.8 mm (2.0 in) |
| 1970 | 50.8 mm (2.0 in) |
| 1979 | 33.8 mm (1.3 in) |
| 1980 | 53.3 mm (2.1 in) |
| 1981 | 61.0 mm (2.4 in) |
| 1982 | 47.0 mm (1.9 in) |
| 1983 | 28.7 mm (1.1 in) |
| 1984 | 39.9 mm (1.6 in) |
| 1985 | 48.3 mm (1.9 in) |
| 1986 | 79.2 mm (3.1 in) |
| 1987 | 46.7 mm (1.8 in) |
| 1988 | 69.6 mm (2.7 in) |
| 1989 | 58.4 mm (2.3 in) |
| 1990 | 57.7 mm (2.3 in) |
| 1991 | 73.7 mm (2.9 in) |
| 1992 | 38.6 mm (1.5 in) |
| 1993 | 49.8 mm (2.0 in) |
| 1994 | 63.2 mm (2.5 in) |
| 1995 | 33.0 mm (1.3 in) |
| 1996 | 52.1 mm (2.1 in) |
| 1997 | 47.2 mm (1.9 in) |
| 1998 | 49.0 mm (1.9 in) |
| 1999 | 74.4 mm (2.9 in) |
| 2000 | 36.6 mm (1.4 in) |
| 2001 | 28.7 mm (1.1 in) |
| 2002 | 54.6 mm (2.1 in) |
| 2003 | 52.8 mm (2.1 in) |
| 2004 | 108.0 mm (4.3 in) |
| 2005 | 57.7 mm (2.3 in) |
| 2006 | 41.4 mm (1.6 in) |
| 2007 | 42.9 mm (1.7 in) |
| 2008 | 38.9 mm (1.5 in) |
| 2009 | 39.9 mm (1.6 in) |
| 2010 | 47.0 mm (1.9 in) |
| 2011 | 48.3 mm (1.9 in) |
| 2012 | 85.1 mm (3.4 in) |
| 2013 | 55.1 mm (2.2 in) |
| 2014 | 58.4 mm (2.3 in) |
| 2015 | 66.0 mm (2.6 in) |
| 2016 | 53.3 mm (2.1 in) |
| 2017 | 40.1 mm (1.6 in) |
| 2018 | 78.2 mm (3.1 in) |
| 2019 | 47.8 mm (1.9 in) |
| 2020 | 31.2 mm (1.2 in) |
| 2021 | 48.3 mm (1.9 in) |
| 2022 | 50.8 mm (2.0 in) |
| 2023 | 40.6 mm (1.6 in) |
| 2024 | 71.1 mm (2.8 in) |
| 2025 | 43.2 mm (1.7 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1952 | 78.7 mm (3.1 in) |
| 1953 | 77.2 mm (3.0 in) |
| 1954 | 120.1 mm (4.7 in) |
| 1955 | 76.7 mm (3.0 in) |
| 1956 | 84.1 mm (3.3 in) |
| 1957 | 60.8 mm (2.4 in) |
| 1958 | 81.6 mm (3.2 in) |
| 1959 | 70.8 mm (2.8 in) |
| 1960 | 75.4 mm (3.0 in) |
| 1961 | 62.5 mm (2.5 in) |
| 1962 | 114.3 mm (4.5 in) |
| 1963 | 86.1 mm (3.4 in) |
| 1964 | 70.1 mm (2.8 in) |
| 1965 | 88.0 mm (3.5 in) |
| 1966 | 66.5 mm (2.6 in) |
| 1967 | 85.1 mm (3.4 in) |
| 1968 | 68.5 mm (2.7 in) |
| 1969 | 61.0 mm (2.4 in) |
| 1970 | 67.0 mm (2.6 in) |
| 1979 | 39.6 mm (1.6 in) |
| 1980 | 79.2 mm (3.1 in) |
| 1981 | 149.8 mm (5.9 in) |
| 1982 | 56.4 mm (2.2 in) |
| 1983 | 50.5 mm (2.0 in) |
| 1984 | 58.7 mm (2.3 in) |
| 1985 | 79.8 mm (3.1 in) |
| 1986 | 117.8 mm (4.6 in) |
| 1987 | 57.1 mm (2.2 in) |
| 1988 | 85.9 mm (3.4 in) |
| 1989 | 80.8 mm (3.2 in) |
| 1990 | 98.8 mm (3.9 in) |
| 1991 | 82.3 mm (3.2 in) |
| 1992 | 85.7 mm (3.4 in) |
| 1993 | 54.4 mm (2.1 in) |
| 1994 | 87.6 mm (3.4 in) |
| 1995 | 64.5 mm (2.5 in) |
| 1996 | 70.9 mm (2.8 in) |
| 1997 | 95.3 mm (3.8 in) |
| 1998 | 68.0 mm (2.7 in) |
| 1999 | 90.4 mm (3.6 in) |
| 2000 | 99.1 mm (3.9 in) |
| 2001 | 49.3 mm (1.9 in) |
| 2002 | 70.4 mm (2.8 in) |
| 2003 | 75.1 mm (3.0 in) |
| 2004 | 115.4 mm (4.5 in) |
| 2005 | 121.0 mm (4.8 in) |
| 2006 | 77.8 mm (3.1 in) |
| 2007 | 87.5 mm (3.4 in) |
| 2008 | 64.8 mm (2.6 in) |
| 2009 | 69.5 mm (2.7 in) |
| 2010 | 56.0 mm (2.2 in) |
| 2011 | 85.8 mm (3.4 in) |
| 2012 | 134.4 mm (5.3 in) |
| 2013 | 71.1 mm (2.8 in) |
| 2014 | 76.7 mm (3.0 in) |
| 2015 | 112.8 mm (4.4 in) |
| 2016 | 81.5 mm (3.2 in) |
| 2017 | 67.6 mm (2.7 in) |
| 2018 | 150.9 mm (5.9 in) |
| 2019 | 87.7 mm (3.5 in) |
| 2020 | 62.7 mm (2.5 in) |
| 2021 | 85.9 mm (3.4 in) |
| 2022 | 72.9 mm (2.9 in) |
| 2023 | 69.6 mm (2.7 in) |
| 2024 | 122.4 mm (4.8 in) |
| 2025 | 86.9 mm (3.4 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1952 | 15 days |
| 1953 | 23 days |
| 1954 | 12 days |
| 1955 | 23 days |
| 1956 | 19 days |
| 1957 | 21 days |
| 1958 | 12 days |
| 1959 | 29 days |
| 1960 | 28 days |
| 1961 | 10 days |
| 1962 | 27 days |
| 1963 | 27 days |
| 1964 | 25 days |
| 1965 | 16 days |
| 1966 | 19 days |
| 1967 | 20 days |
| 1968 | 26 days |
| 1969 | 13 days |
| 1970 | 13 days |
| 1979 | 13 days |
| 1980 | 15 days |
| 1981 | 31 days |
| 1982 | 17 days |
| 1983 | 13 days |
| 1984 | 11 days |
| 1985 | 19 days |
| 1986 | 13 days |
| 1987 | 15 days |
| 1988 | 23 days |
| 1989 | 9 days |
| 1990 | 12 days |
| 1991 | 16 days |
| 1992 | 14 days |
| 1993 | 16 days |
| 1994 | 17 days |
| 1995 | 28 days |
| 1996 | 10 days |
| 1997 | 12 days |
| 1998 | 19 days |
| 1999 | 14 days |
| 2000 | 24 days |
| 2001 | 19 days |
| 2002 | 11 days |
| 2003 | 13 days |
| 2004 | 10 days |
| 2005 | 25 days |
| 2006 | 17 days |
| 2007 | 14 days |
| 2008 | 16 days |
| 2009 | 18 days |
| 2010 | 11 days |
| 2011 | 9 days |
| 2012 | 17 days |
| 2013 | 11 days |
| 2014 | 9 days |
| 2015 | 12 days |
| 2016 | 12 days |
| 2017 | 14 days |
| 2018 | 13 days |
| 2019 | 8 days |
| 2020 | 24 days |
| 2021 | 11 days |
| 2022 | 10 days |
| 2023 | 21 days |
| 2024 | 14 days |
| 2025 | 7 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
50 years, 1953 to 2023A day with at least 48.2 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 108.9 mm (4.3 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 48.2 mm (1.9 in) | |
| 5 years | 61.1 mm (2.4 in) | |
| 10 years | 70.8 mm (2.8 in) | |
| 25 years | 84.6 mm (3.3 in) | |
| 50 years | 96.2 mm (3.8 in) | |
| 100 years | 108.9 mm (4.3 in) | Longer than the 50 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, 50 years of values from 1953 to 2023.
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: 117.3 mm (4.6 in) in 1954; 83.8 mm (3.3 in) in 1956; 79.2 mm (3.1 in) in 1986.
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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2025-12-31).