Union Grove Wwtp Weather Records (USC00478723)
Record envelope, standing records and threshold days for Union Grove Wwtp (USC00478723), Wisconsin, United States, with 86 years of record.
Key Facts for Union Grove Wwtp
- Union Grove Wwtp (USC00478723) is a weather station in Wisconsin, United States at 42.69 latitude and -88.03 longitude, 219 m (718 ft) above sea level.
- The station reports from 1941 to 2026, 86 years of record.
- 1,464 records set at Union Grove Wwtp still stand.
- Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Union Grove Wwtp set a daily record precipitation of 49.3 mm (1.9 in) on 20 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Wisconsin, United States, 42.69 latitude, -88.03 longitude.
- Elevation: 219 m (718 ft).
- Period of record: 1941 to 2026, 86 years.
- Eligible elements: prcp, snow, snwd.
Daily Record Envelope and 2026
22 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 17.2 C (63.0 F) | -31.7 C (-25.1 F) | 15.6 C (60.1 F) | -26.7 C (-16.1 F) |
| Feb | 23.9 C (75.0 F) | -30.6 C (-23.1 F) | 17.2 C (63.0 F) | -18.9 C (-2.0 F) |
| Mar | 28.9 C (84.0 F) | -25.0 C (-13.0 F) | 26.1 C (79.0 F) | -12.8 C (9.0 F) |
| Apr | 32.2 C (90.0 F) | -10.6 C (12.9 F) | 27.8 C (82.0 F) | -5.6 C (21.9 F) |
| May | 34.4 C (93.9 F) | -5.0 C (23.0 F) | 29.4 C (84.9 F) | -3.3 C (26.1 F) |
| Jun | 36.7 C (98.1 F) | 1.7 C (35.1 F) | 33.3 C (91.9 F) | 5.6 C (42.1 F) |
| Jul | 40.0 C (104.0 F) | 5.6 C (42.1 F) | 36.7 C (98.1 F) | 8.9 C (48.0 F) |
| Aug | 36.1 C (97.0 F) | 5.0 C (41.0 F) | 30.0 C (86.0 F) | 9.4 C (48.9 F) |
| Sep | 34.4 C (93.9 F) | -2.2 C (28.0 F) | 33.3 C (91.9 F) | 5.0 C (41.0 F) |
| Oct | 31.1 C (88.0 F) | -7.8 C (18.0 F) | 27.8 C (82.0 F) | 4.4 C (39.9 F) |
| Nov | 23.9 C (75.0 F) | -17.2 C (1.0 F) | n/a | n/a |
| Dec | 20.0 C (68.0 F) | -30.6 C (-23.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1964 | 16 |
| 1966 | 6 |
| 1971 | 7 |
| 1974 | 5 |
| 1977 | 8 |
| 1979 | 6 |
| 1996 | 17 |
| 1997 | 50 |
| 1998 | 44 |
| 1999 | 48 |
| 2000 | 60 |
| 2001 | 50 |
| 2002 | 54 |
| 2003 | 42 |
| 2004 | 46 |
| 2005 | 54 |
| 2006 | 53 |
| 2007 | 46 |
| 2008 | 39 |
| 2009 | 41 |
| 2010 | 29 |
| 2011 | 38 |
| 2012 | 66 |
| 2013 | 46 |
| 2014 | 69 |
| 2015 | 62 |
| 2016 | 40 |
| 2017 | 56 |
| 2018 | 50 |
| 2019 | 50 |
| 2020 | 41 |
| 2021 | 48 |
| 2022 | 31 |
| 2023 | 38 |
| 2024 | 39 |
| 2025 | 34 |
| 2026 | 35 |
All-Time Record Progression
6 new records| Date | Kind | Detail |
|---|---|---|
| 1978-08-18 | Record daily precipitation | Record daily precipitation 136.4 mm (5.4 in) |
| 1979-01-13 | Record snow depth | Record snow depth 78.7 cm (31.0 in) |
| 1979-01-14 | Record snow depth | Record snow depth 83.8 cm (33.0 in) |
| 1979-01-15 | Record snow depth | Record snow depth 88.9 cm (35.0 in) |
| 1979-01-16 | Record snow depth | Record snow depth 94.0 cm (37.0 in) |
| 2011-02-02 | Record daily snowfall | Record daily snowfall 45.7 cm (18.0 in) |
Wettest Day of Each Month
Aug: 136.4 mm (5.4 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 45.2 mm (1.8 in) | 30 January 2013 |
| Feb | 51.1 mm (2.0 in) | 22 February 1974 |
| Mar | 52.1 mm (2.1 in) | 12 March 2006 |
| Apr | 76.2 mm (3.0 in) | 9 April 1973 |
| May | 91.9 mm (3.6 in) | 13 May 2014 |
| Jun | 98.8 mm (3.9 in) | 25 June 1987 |
| Jul | 101.6 mm (4.0 in) | 18 July 1964 |
| Aug | 136.4 mm (5.4 in) | 18 August 1978 |
| Sep | 110.0 mm (4.3 in) | 1 September 1989 |
| Oct | 73.2 mm (2.9 in) | 2 October 2019 |
| Nov | 54.6 mm (2.1 in) | 9 November 1998 |
| Dec | 66.0 mm (2.6 in) | 3 December 1982 |
Period of Record Coverage
1964 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1964 | 60 | 16% | No |
| 1966 | 31 | 8% | No |
| 1971 | 26 | 7% | No |
| 1974 | 29 | 8% | No |
| 1977 | 28 | 8% | No |
| 1979 | 31 | 8% | No |
| 1996 | 146 | 40% | No |
| 1997 | 362 | 99% | Yes |
| 1998 | 360 | 99% | Yes |
| 1999 | 359 | 98% | Yes |
| 2000 | 362 | 99% | Yes |
| 2001 | 362 | 99% | Yes |
| 2002 | 364 | 100% | Yes |
| 2003 | 355 | 97% | Yes |
| 2004 | 365 | 100% | Yes |
| 2005 | 364 | 100% | Yes |
| 2006 | 364 | 100% | Yes |
| 2007 | 363 | 99% | Yes |
| 2008 | 364 | 99% | Yes |
| 2009 | 363 | 99% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 365 | 100% | Yes |
| 2014 | 365 | 100% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 365 | 100% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 366 | 100% | Yes |
| 2021 | 363 | 99% | Yes |
| 2022 | 364 | 100% | Yes |
| 2023 | 362 | 99% | Yes |
| 2024 | 363 | 99% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 285 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 20 September 2026 | Union Grove Wwtp, US | daily rain (Provisional) | 49.3 mm (1.9 in) | 10.4 mm (0.4 in) | 63 years | 33 of 100 (Routine) |
| 1 August 2026 | Union Grove Wwtp, US | daily rain | 48.3 mm (1.9 in) | 8.7 mm (0.34 in) | 80 years | 38 of 100 (Notable) |
| 28 July 2026 | Union Grove Wwtp, US | daily rain | 78.7 mm (3.1 in) | 40.3 mm (1.6 in) | 36 years | 49 of 100 (Notable) |
| 4 April 2026 | Union Grove Wwtp, US | daily rain | 33.5 mm (1.3 in) | 15.2 mm (0.6 in) | 68 years | 42 of 100 (Notable) |
| 3 April 2026 | Union Grove Wwtp, US | daily rain | 46.0 mm (1.8 in) | 6.9 mm (0.27 in) | 44 years | 27 of 100 (Routine) |
| 16 March 2026 | Union Grove Wwtp, US | daily rain | 44.5 mm (1.8 in) | 10.2 mm (0.4 in) | 84 years | 46 of 100 (Notable) |
| 11 March 2026 | Union Grove Wwtp, US | daily rain | 40.9 mm (1.6 in) | 23.1 mm (0.9 in) | 12 years | 41 of 100 (Notable) |
| 7 December 2025 | Union Grove Wwtp, US | daily snow depth | 22.9 cm (9.0 in) | 2.6 cm (1.0 in) | 18 years | 15 of 100 (Routine) |
| 2 December 2025 | Union Grove Wwtp, US | daily snow depth (Tie) | 22.9 cm (9.0 in) | tie | 19 years | 3 of 100 (Routine) |
| 1 December 2025 | Union Grove Wwtp, US | daily snow depth (Tie) | 22.9 cm (9.0 in) | tie | 19 years | 3 of 100 (Routine) |
| 30 November 2025 | Union Grove Wwtp, US | monthly snowfall | 25.4 cm (10.0 in) | 8.6 cm (3.4 in) | 10 years | 45 of 100 (Notable) |
| 30 November 2025 | Union Grove Wwtp, US | monthly snow depth | 25.4 cm (10.0 in) | 5.1 cm (2.0 in) | 48 years | 45 of 100 (Notable) |
| 31 July 2025 | Union Grove Wwtp, US | daily rain | 28.4 mm (1.1 in) | 7.6 mm (0.30 in) | 48 years | 27 of 100 (Routine) |
| 13 February 2025 | Union Grove Wwtp, US | daily snowfall | 17.8 cm (7.0 in) | 2.6 cm (1.0 in) | 31 years | 21 of 100 (Routine) |
| 20 December 2024 | Union Grove Wwtp, US | daily snowfall (Tie) | 10.2 cm (4.0 in) | tie | 59 years | 6 of 100 (Routine) |
| 22 November 2024 | Union Grove Wwtp, US | daily snowfall | 5.1 cm (2.0 in) | 2.6 cm (1.0 in) | 39 years | 26 of 100 (Routine) |
| 5 May 2024 | Union Grove Wwtp, US | daily rain | 20.8 mm (0.8 in) | 1.7 mm (0.07 in) | 34 years | 19 of 100 (Routine) |
| 15 February 2024 | Union Grove Wwtp, US | daily rain | 10.4 mm (0.4 in) | 2.0 mm (0.08 in) | 32 years | 20 of 100 (Routine) |
| 13 January 2024 | Union Grove Wwtp, US | daily rain | 27.4 mm (1.1 in) | 5.6 mm (0.22 in) | 64 years | 36 of 100 (Notable) |
| 14 October 2023 | Union Grove Wwtp, US | daily rain | 48.3 mm (1.9 in) | 25.9 mm (1.0 in) | 8 years | 37 of 100 (Notable) |
Climate Trend
29 complete years, 1997 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1997 | 7.7 C | -0.85 C |
| 1998 | 10.3 C | +1.69 C |
| 1999 | 9.1 C | +0.54 C |
| 2000 | 8.4 C | -0.14 C |
| 2001 | 9.1 C | +0.55 C |
| 2002 | 9.0 C | +0.39 C |
| 2003 | 7.9 C | -0.70 C |
| 2004 | 8.1 C | -0.45 C |
| 2005 | 9.2 C | +0.60 C |
| 2006 | 9.3 C | +0.76 C |
| 2007 | 8.8 C | +0.20 C |
| 2008 | 7.4 C | -1.13 C |
| 2009 | 7.5 C | -1.12 C |
| 2010 | 9.1 C | +0.51 C |
| 2011 | 8.4 C | -0.16 C |
| 2012 | 10.3 C | +1.72 C |
| 2013 | 7.4 C | -1.20 C |
| 2014 | 6.1 C | -2.51 C |
| 2015 | 8.1 C | -0.51 C |
| 2016 | 9.2 C | +0.59 C |
| 2017 | 8.8 C | +0.18 C |
| 2018 | 7.7 C | -0.88 C |
| 2019 | 7.4 C | -1.18 C |
| 2020 | 8.8 C | +0.18 C |
| 2021 | 9.0 C | +0.44 C |
| 2022 | 8.2 C | -0.38 C |
| 2023 | 9.6 C | +1.02 C |
| 2024 | 10.3 C | +1.69 C |
| 2025 | 8.6 C | +0.03 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
1941 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 40.0 C (104.0 F) | 2012 | 33.9 C (93.0 F) | 37 |
| Coldest night (TNn) | -31.7 C (-25.1 F) | 2019 | -23.9 C (-11.0 F) | 37 |
| Wettest day (Rx1day) | 136.4 mm (5.4 in) | 1978 | 58.4 mm (2.3 in) | 86 |
| Wettest five days (Rx5day) | 211.8 mm (8.3 in) | 1978 | 87.2 mm (3.4 in) | 86 |
| Longest dry spell (CDD) | 55 days | 1952 | 21 days | 86 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 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 | 31.7 C (89.1 F) |
| 1965 | n/a |
| 1966 | 31.7 C (89.1 F) |
| 1967 | n/a |
| 1968 | n/a |
| 1969 | n/a |
| 1970 | n/a |
| 1971 | 36.1 C (97.0 F) |
| 1972 | n/a |
| 1973 | n/a |
| 1974 | 29.4 C (84.9 F) |
| 1975 | n/a |
| 1976 | n/a |
| 1977 | 33.9 C (93.0 F) |
| 1978 | n/a |
| 1979 | 27.2 C (81.0 F) |
| 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 | 32.8 C (91.0 F) |
| 1997 | 33.9 C (93.0 F) |
| 1998 | 34.4 C (93.9 F) |
| 1999 | 38.3 C (100.9 F) |
| 2000 | 34.4 C (93.9 F) |
| 2001 | 35.0 C (95.0 F) |
| 2002 | 36.7 C (98.1 F) |
| 2003 | 35.0 C (95.0 F) |
| 2004 | 32.2 C (90.0 F) |
| 2005 | 36.7 C (98.1 F) |
| 2006 | 35.6 C (96.1 F) |
| 2007 | 33.3 C (91.9 F) |
| 2008 | 33.9 C (93.0 F) |
| 2009 | 34.4 C (93.9 F) |
| 2010 | 33.9 C (93.0 F) |
| 2011 | 36.7 C (98.1 F) |
| 2012 | 40.0 C (104.0 F) |
| 2013 | 34.4 C (93.9 F) |
| 2014 | 30.6 C (87.1 F) |
| 2015 | 32.8 C (91.0 F) |
| 2016 | 32.8 C (91.0 F) |
| 2017 | 33.9 C (93.0 F) |
| 2018 | 34.4 C (93.9 F) |
| 2019 | 32.8 C (91.0 F) |
| 2020 | 33.3 C (91.9 F) |
| 2021 | 33.9 C (93.0 F) |
| 2022 | 36.7 C (98.1 F) |
| 2023 | 35.6 C (96.1 F) |
| 2024 | 33.9 C (93.0 F) |
| 2025 | 34.4 C (93.9 F) |
| 2026 | 36.7 C (98.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 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 | -5.0 C (23.0 F) |
| 1965 | n/a |
| 1966 | 7.8 C (46.0 F) |
| 1967 | n/a |
| 1968 | n/a |
| 1969 | n/a |
| 1970 | n/a |
| 1971 | -16.1 C (3.0 F) |
| 1972 | n/a |
| 1973 | n/a |
| 1974 | -3.9 C (25.0 F) |
| 1975 | n/a |
| 1976 | n/a |
| 1977 | 1.7 C (35.1 F) |
| 1978 | n/a |
| 1979 | -5.6 C (21.9 F) |
| 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 | -19.4 C (-2.9 F) |
| 1997 | -25.0 C (-13.0 F) |
| 1998 | -21.1 C (-6.0 F) |
| 1999 | -28.9 C (-20.0 F) |
| 2000 | -27.2 C (-17.0 F) |
| 2001 | -20.6 C (-5.1 F) |
| 2002 | -23.3 C (-9.9 F) |
| 2003 | -23.9 C (-11.0 F) |
| 2004 | -24.4 C (-11.9 F) |
| 2005 | -23.3 C (-9.9 F) |
| 2006 | -25.0 C (-13.0 F) |
| 2007 | -26.1 C (-15.0 F) |
| 2008 | -22.8 C (-9.0 F) |
| 2009 | -28.3 C (-18.9 F) |
| 2010 | -22.8 C (-9.0 F) |
| 2011 | -25.0 C (-13.0 F) |
| 2012 | -19.4 C (-2.9 F) |
| 2013 | -22.8 C (-9.0 F) |
| 2014 | -28.9 C (-20.0 F) |
| 2015 | -27.8 C (-18.0 F) |
| 2016 | -30.6 C (-23.1 F) |
| 2017 | -22.8 C (-9.0 F) |
| 2018 | -23.3 C (-9.9 F) |
| 2019 | -31.7 C (-25.1 F) |
| 2020 | -22.8 C (-9.0 F) |
| 2021 | -24.4 C (-11.9 F) |
| 2022 | -25.0 C (-13.0 F) |
| 2023 | -28.3 C (-18.9 F) |
| 2024 | -24.4 C (-11.9 F) |
| 2025 | -23.9 C (-11.0 F) |
| 2026 | -26.7 C (-16.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1941 | 76.2 mm (3.0 in) |
| 1942 | 38.4 mm (1.5 in) |
| 1943 | 41.4 mm (1.6 in) |
| 1944 | 50.8 mm (2.0 in) |
| 1945 | 87.1 mm (3.4 in) |
| 1946 | 28.2 mm (1.1 in) |
| 1947 | 75.4 mm (3.0 in) |
| 1948 | 41.1 mm (1.6 in) |
| 1949 | 34.5 mm (1.4 in) |
| 1950 | 85.3 mm (3.4 in) |
| 1951 | 33.3 mm (1.3 in) |
| 1952 | 70.9 mm (2.8 in) |
| 1953 | 38.9 mm (1.5 in) |
| 1954 | 69.9 mm (2.8 in) |
| 1955 | 33.8 mm (1.3 in) |
| 1956 | 38.1 mm (1.5 in) |
| 1957 | 101.6 mm (4.0 in) |
| 1958 | 60.5 mm (2.4 in) |
| 1959 | 44.2 mm (1.7 in) |
| 1960 | 61.5 mm (2.4 in) |
| 1961 | 68.8 mm (2.7 in) |
| 1962 | 43.9 mm (1.7 in) |
| 1963 | 62.5 mm (2.5 in) |
| 1964 | 101.6 mm (4.0 in) |
| 1965 | 40.6 mm (1.6 in) |
| 1966 | 39.4 mm (1.6 in) |
| 1967 | 51.6 mm (2.0 in) |
| 1968 | 35.1 mm (1.4 in) |
| 1969 | 58.4 mm (2.3 in) |
| 1970 | 51.3 mm (2.0 in) |
| 1971 | 43.2 mm (1.7 in) |
| 1972 | 71.1 mm (2.8 in) |
| 1973 | 76.2 mm (3.0 in) |
| 1974 | 51.1 mm (2.0 in) |
| 1975 | 38.6 mm (1.5 in) |
| 1976 | 53.3 mm (2.1 in) |
| 1977 | 58.4 mm (2.3 in) |
| 1978 | 136.4 mm (5.4 in) |
| 1979 | 58.7 mm (2.3 in) |
| 1980 | 68.6 mm (2.7 in) |
| 1981 | 59.2 mm (2.3 in) |
| 1982 | 66.0 mm (2.6 in) |
| 1983 | 65.8 mm (2.6 in) |
| 1984 | 43.2 mm (1.7 in) |
| 1985 | 42.4 mm (1.7 in) |
| 1986 | 61.2 mm (2.4 in) |
| 1987 | 98.8 mm (3.9 in) |
| 1988 | 53.1 mm (2.1 in) |
| 1989 | 110.0 mm (4.3 in) |
| 1990 | 50.8 mm (2.0 in) |
| 1991 | 71.9 mm (2.8 in) |
| 1992 | 40.6 mm (1.6 in) |
| 1993 | 52.1 mm (2.1 in) |
| 1994 | 37.6 mm (1.5 in) |
| 1995 | 50.8 mm (2.0 in) |
| 1996 | 61.0 mm (2.4 in) |
| 1997 | 59.2 mm (2.3 in) |
| 1998 | 54.6 mm (2.1 in) |
| 1999 | 69.9 mm (2.8 in) |
| 2000 | 53.3 mm (2.1 in) |
| 2001 | 67.3 mm (2.6 in) |
| 2002 | 50.8 mm (2.0 in) |
| 2003 | 64.8 mm (2.6 in) |
| 2004 | 73.7 mm (2.9 in) |
| 2005 | 44.5 mm (1.8 in) |
| 2006 | 58.4 mm (2.3 in) |
| 2007 | 100.6 mm (4.0 in) |
| 2008 | 64.5 mm (2.5 in) |
| 2009 | 68.1 mm (2.7 in) |
| 2010 | 55.1 mm (2.2 in) |
| 2011 | 44.4 mm (1.7 in) |
| 2012 | 45.2 mm (1.8 in) |
| 2013 | 65.8 mm (2.6 in) |
| 2014 | 91.9 mm (3.6 in) |
| 2015 | 53.3 mm (2.1 in) |
| 2016 | 50.0 mm (2.0 in) |
| 2017 | 72.4 mm (2.9 in) |
| 2018 | 81.0 mm (3.2 in) |
| 2019 | 73.2 mm (2.9 in) |
| 2020 | 82.0 mm (3.2 in) |
| 2021 | 33.5 mm (1.3 in) |
| 2022 | 86.9 mm (3.4 in) |
| 2023 | 70.1 mm (2.8 in) |
| 2024 | 43.2 mm (1.7 in) |
| 2025 | 39.4 mm (1.6 in) |
| 2026 | 78.7 mm (3.1 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1941 | 106.4 mm (4.2 in) |
| 1942 | 46.5 mm (1.8 in) |
| 1943 | 65.3 mm (2.6 in) |
| 1944 | 62.7 mm (2.5 in) |
| 1945 | 101.1 mm (4.0 in) |
| 1946 | 52.1 mm (2.1 in) |
| 1947 | 75.4 mm (3.0 in) |
| 1948 | 86.7 mm (3.4 in) |
| 1949 | 79.3 mm (3.1 in) |
| 1950 | 129.5 mm (5.1 in) |
| 1951 | 56.4 mm (2.2 in) |
| 1952 | 90.7 mm (3.6 in) |
| 1953 | 79.7 mm (3.1 in) |
| 1954 | 145.9 mm (5.7 in) |
| 1955 | 64.5 mm (2.5 in) |
| 1956 | 93.7 mm (3.7 in) |
| 1957 | 116.1 mm (4.6 in) |
| 1958 | 78.0 mm (3.1 in) |
| 1959 | 91.0 mm (3.6 in) |
| 1960 | 83.8 mm (3.3 in) |
| 1961 | 111.8 mm (4.4 in) |
| 1962 | 47.7 mm (1.9 in) |
| 1963 | 73.7 mm (2.9 in) |
| 1964 | 112.6 mm (4.4 in) |
| 1965 | 77.4 mm (3.0 in) |
| 1966 | 52.0 mm (2.0 in) |
| 1967 | 129.8 mm (5.1 in) |
| 1968 | 86.1 mm (3.4 in) |
| 1969 | 94.9 mm (3.7 in) |
| 1970 | 93.4 mm (3.7 in) |
| 1971 | 47.7 mm (1.9 in) |
| 1972 | 97.0 mm (3.8 in) |
| 1973 | 84.6 mm (3.3 in) |
| 1974 | 79.5 mm (3.1 in) |
| 1975 | 71.1 mm (2.8 in) |
| 1976 | 96.2 mm (3.8 in) |
| 1977 | 72.2 mm (2.8 in) |
| 1978 | 211.8 mm (8.3 in) |
| 1979 | 99.8 mm (3.9 in) |
| 1980 | 85.7 mm (3.4 in) |
| 1981 | 87.6 mm (3.4 in) |
| 1982 | 91.7 mm (3.6 in) |
| 1983 | 65.8 mm (2.6 in) |
| 1984 | 88.4 mm (3.5 in) |
| 1985 | 63.3 mm (2.5 in) |
| 1986 | 106.6 mm (4.2 in) |
| 1987 | 115.6 mm (4.6 in) |
| 1988 | 59.2 mm (2.3 in) |
| 1989 | 121.9 mm (4.8 in) |
| 1990 | 85.3 mm (3.4 in) |
| 1991 | 80.0 mm (3.1 in) |
| 1992 | 65.5 mm (2.6 in) |
| 1993 | 75.2 mm (3.0 in) |
| 1994 | 66.8 mm (2.6 in) |
| 1995 | 87.6 mm (3.4 in) |
| 1996 | 67.9 mm (2.7 in) |
| 1997 | 94.0 mm (3.7 in) |
| 1998 | 70.9 mm (2.8 in) |
| 1999 | 94.6 mm (3.7 in) |
| 2000 | 82.5 mm (3.2 in) |
| 2001 | 88.4 mm (3.5 in) |
| 2002 | 97.4 mm (3.8 in) |
| 2003 | 92.0 mm (3.6 in) |
| 2004 | 145.0 mm (5.7 in) |
| 2005 | 56.4 mm (2.2 in) |
| 2006 | 80.1 mm (3.2 in) |
| 2007 | 207.1 mm (8.2 in) |
| 2008 | 151.1 mm (5.9 in) |
| 2009 | 112.9 mm (4.4 in) |
| 2010 | 76.2 mm (3.0 in) |
| 2011 | 96.7 mm (3.8 in) |
| 2012 | 56.1 mm (2.2 in) |
| 2013 | 93.3 mm (3.7 in) |
| 2014 | 104.2 mm (4.1 in) |
| 2015 | 66.5 mm (2.6 in) |
| 2016 | 60.4 mm (2.4 in) |
| 2017 | 195.6 mm (7.7 in) |
| 2018 | 133.4 mm (5.3 in) |
| 2019 | 111.7 mm (4.4 in) |
| 2020 | 104.6 mm (4.1 in) |
| 2021 | 59.0 mm (2.3 in) |
| 2022 | 89.2 mm (3.5 in) |
| 2023 | 77.2 mm (3.0 in) |
| 2024 | 96.0 mm (3.8 in) |
| 2025 | 58.2 mm (2.3 in) |
| 2026 | 127.0 mm (5.0 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1941 | 15 days |
| 1942 | 27 days |
| 1943 | 25 days |
| 1944 | 25 days |
| 1945 | 19 days |
| 1946 | 21 days |
| 1947 | 20 days |
| 1948 | 29 days |
| 1949 | 22 days |
| 1950 | 25 days |
| 1951 | 17 days |
| 1952 | 55 days |
| 1953 | 24 days |
| 1954 | 23 days |
| 1955 | 20 days |
| 1956 | 29 days |
| 1957 | 28 days |
| 1958 | 36 days |
| 1959 | 21 days |
| 1960 | 21 days |
| 1961 | 23 days |
| 1962 | 20 days |
| 1963 | 18 days |
| 1964 | 24 days |
| 1965 | 15 days |
| 1966 | 21 days |
| 1967 | 21 days |
| 1968 | 19 days |
| 1969 | 40 days |
| 1970 | 23 days |
| 1971 | 16 days |
| 1972 | 19 days |
| 1973 | 16 days |
| 1974 | 15 days |
| 1975 | 14 days |
| 1976 | 20 days |
| 1977 | 30 days |
| 1978 | 26 days |
| 1979 | 33 days |
| 1980 | 21 days |
| 1981 | 31 days |
| 1982 | 19 days |
| 1983 | 29 days |
| 1984 | 19 days |
| 1985 | 14 days |
| 1986 | 23 days |
| 1987 | 29 days |
| 1988 | 43 days |
| 1989 | 25 days |
| 1990 | 20 days |
| 1991 | 23 days |
| 1992 | 19 days |
| 1993 | 19 days |
| 1994 | 22 days |
| 1995 | 40 days |
| 1996 | 27 days |
| 1997 | 18 days |
| 1998 | 25 days |
| 1999 | 25 days |
| 2000 | 16 days |
| 2001 | 19 days |
| 2002 | 17 days |
| 2003 | 22 days |
| 2004 | 21 days |
| 2005 | 18 days |
| 2006 | 18 days |
| 2007 | 25 days |
| 2008 | 14 days |
| 2009 | 26 days |
| 2010 | 31 days |
| 2011 | 17 days |
| 2012 | 21 days |
| 2013 | 19 days |
| 2014 | 22 days |
| 2015 | 21 days |
| 2016 | 19 days |
| 2017 | 22 days |
| 2018 | 19 days |
| 2019 | 26 days |
| 2020 | 19 days |
| 2021 | 21 days |
| 2022 | 20 days |
| 2023 | 24 days |
| 2024 | 22 days |
| 2025 | 22 days |
| 2026 | 17 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
29 years with a frostAcross 29 years with a frost, the median last spring frost at Union Grove Wwtp falls on 4 May and the median first autumn frost on 14 October, which leaves a median of 164 days between them.
Fitted over all years, the growing season changes by +0.7 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1997 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 4 May | n/a | 4 May | n/a | +1.9 days per decade |
| First autumn frost | 14 October | n/a | 14 October | n/a | +2.6 days per decade |
| Growing days | 164 days | n/a | 164 days | n/a | +0.7 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
83 years, 1942 to 2025A day with at least 56.0 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 126.3 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 | 56.0 mm (2.2 in) | |
| 5 years | 74.0 mm (2.9 in) | |
| 10 years | 86.2 mm (3.4 in) | |
| 25 years | 102.1 mm (4.0 in) | |
| 50 years | 114.1 mm (4.5 in) | |
| 100 years | 126.3 mm (5.0 in) | Longer than the 83 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, 83 years of values from 1942 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: 136.4 mm (5.4 in) in 1978; 110.0 mm (4.3 in) in 1989; 101.6 mm (4.0 in) in 1957.
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-14).