Alton - Melvin Price L&D Weather Records (USC00110137)
Record envelope, standing records and threshold days for Alton - Melvin Price L&D (USC00110137), Illinois, United States, with 135 years of record.
Key Facts for Alton - Melvin Price L&D
- Alton - Melvin Price L&D (USC00110137) is a weather station in Illinois, United States at 38.87 latitude and -90.15 longitude, 123 m (405 ft) above sea level.
- The station reports from 1892 to 2026, 135 years of record.
- 1,464 records set at Alton - Melvin Price L&D still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Alton - Melvin Price L&D set a daily record high maximum temperature of 33.3 C (91.9 F) on 13 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Illinois, United States, 38.87 latitude, -90.15 longitude.
- Elevation: 123 m (405 ft).
- Period of record: 1892 to 2026, 135 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
17 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 25.0 C (77.0 F) | -26.7 C (-16.1 F) | 17.8 C (64.0 F) | -21.1 C (-6.0 F) |
| Feb | 26.7 C (80.1 F) | -26.1 C (-15.0 F) | 23.3 C (73.9 F) | -15.6 C (3.9 F) |
| Mar | 31.7 C (89.1 F) | -18.3 C (-0.9 F) | 31.7 C (89.1 F) | -10.0 C (14.0 F) |
| Apr | 38.9 C (102.0 F) | -6.7 C (19.9 F) | 30.0 C (86.0 F) | 4.4 C (39.9 F) |
| May | 36.7 C (98.1 F) | 0.0 C (32.0 F) | 30.6 C (87.1 F) | 5.0 C (41.0 F) |
| Jun | 41.7 C (107.1 F) | 6.7 C (44.1 F) | 35.6 C (96.1 F) | 12.8 C (55.0 F) |
| Jul | 46.7 C (116.1 F) | 10.0 C (50.0 F) | 36.1 C (97.0 F) | 16.1 C (61.0 F) |
| Aug | 41.1 C (106.0 F) | 7.8 C (46.0 F) | 37.8 C (100.0 F) | 14.4 C (57.9 F) |
| Sep | 39.4 C (102.9 F) | 2.8 C (37.0 F) | 37.8 C (100.0 F) | 12.2 C (54.0 F) |
| Oct | 36.7 C (98.1 F) | -3.9 C (25.0 F) | 33.3 C (91.9 F) | 8.9 C (48.0 F) |
| Nov | 31.1 C (88.0 F) | -15.6 C (3.9 F) | n/a | n/a |
| Dec | 23.3 C (73.9 F) | -26.7 C (-16.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1943 | 4 |
| 1944 | 28 |
| 1945 | 23 |
| 1946 | 59 |
| 1947 | 22 |
| 1948 | 21 |
| 1949 | 22 |
| 1950 | 34 |
| 1951 | 15 |
| 1952 | 37 |
| 1953 | 30 |
| 1954 | 26 |
| 1955 | 18 |
| 1956 | 12 |
| 1957 | 7 |
| 1958 | 14 |
| 1959 | 17 |
| 1960 | 18 |
| 1961 | 16 |
| 1962 | 15 |
| 1963 | 29 |
| 1964 | 12 |
| 1965 | 21 |
| 1966 | 21 |
| 1967 | 13 |
| 1968 | 10 |
| 1969 | 10 |
| 1970 | 14 |
| 1971 | 14 |
| 1972 | 21 |
| 1973 | 6 |
| 1974 | 30 |
| 1975 | 12 |
| 1976 | 35 |
| 1977 | 19 |
| 1978 | 11 |
| 1979 | 21 |
| 1980 | 18 |
| 1981 | 17 |
| 1982 | 16 |
| 1983 | 27 |
| 1984 | 7 |
| 1985 | 24 |
| 1986 | 22 |
| 1987 | 9 |
| 1988 | 11 |
| 1989 | 22 |
| 1990 | 15 |
| 1991 | 34 |
| 1992 | 13 |
| 1993 | 13 |
| 1994 | 12 |
| 1995 | 14 |
| 1996 | 19 |
| 1997 | 12 |
| 1998 | 19 |
| 1999 | 7 |
| 2000 | 12 |
| 2001 | 14 |
| 2002 | 16 |
| 2003 | 15 |
| 2004 | 18 |
| 2005 | 16 |
| 2006 | 34 |
| 2007 | 23 |
| 2008 | 13 |
| 2009 | 14 |
| 2010 | 11 |
| 2011 | 23 |
| 2012 | 24 |
| 2013 | 14 |
| 2014 | 8 |
| 2015 | 12 |
| 2016 | 15 |
| 2017 | 15 |
| 2018 | 12 |
| 2019 | 11 |
| 2020 | 5 |
| 2021 | 14 |
| 2022 | 4 |
| 2023 | 16 |
| 2024 | 9 |
| 2025 | 15 |
| 2026 | 13 |
All-Time Record Progression
9 new records| Date | Kind | Detail |
|---|---|---|
| 1977-01-16 | Record low minimum temperature | Record low minimum temperature -23.9 C (-11.0 F) |
| 1977-01-17 | Record low maximum temperature | Record low maximum temperature -20.0 C (-4.0 F) |
| 1977-01-17 | Record low minimum temperature | Record low minimum temperature -26.1 C (-15.0 F) |
| 1978-03-08 | Record daily snowfall | Record daily snowfall 33.0 cm (13.0 in) |
| 1982-01-10 | Record low minimum temperature | Record low minimum temperature -26.7 C (-16.1 F) |
| 1982-02-09 | Record snow depth | Record snow depth 53.3 cm (21.0 in) |
| 1996-04-23 | Record daily precipitation | Record daily precipitation 195.6 mm (7.7 in) |
| 2006-08-03 | Record high minimum temperature | Record high minimum temperature 28.9 C (84.0 F) |
| 2011-07-23 | Record high minimum temperature | Record high minimum temperature 29.4 C (84.9 F) |
Wettest Day of Each Month
Apr: 195.6 mm (7.7 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 90.9 mm (3.6 in) | 4 January 1950 |
| Feb | 127.0 mm (5.0 in) | 2 February 2011 |
| Mar | 104.6 mm (4.1 in) | 28 March 1977 |
| Apr | 195.6 mm (7.7 in) | 23 April 1996 |
| May | 119.4 mm (4.7 in) | 17 May 1995 |
| Jun | 126.2 mm (5.0 in) | 17 June 2004 |
| Jul | 118.9 mm (4.7 in) | 16 July 1952 |
| Aug | 109.5 mm (4.3 in) | 16 August 1946 |
| Sep | 87.9 mm (3.5 in) | 17 September 1969 |
| Oct | 88.9 mm (3.5 in) | 4 October 1986 |
| Nov | 137.2 mm (5.4 in) | 1 November 1946 |
| Dec | 141.0 mm (5.6 in) | 27 December 2015 |
Period of Record Coverage
1943 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1943 | 115 | 32% | No |
| 1944 | 341 | 93% | Yes |
| 1945 | 339 | 93% | Yes |
| 1946 | 335 | 92% | Yes |
| 1947 | 340 | 93% | Yes |
| 1948 | 340 | 93% | Yes |
| 1949 | 362 | 99% | Yes |
| 1950 | 362 | 99% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 365 | 100% | Yes |
| 1953 | 355 | 97% | Yes |
| 1954 | 333 | 91% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 335 | 92% | Yes |
| 1957 | 333 | 91% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 361 | 99% | Yes |
| 1960 | 363 | 99% | Yes |
| 1961 | 365 | 100% | Yes |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 365 | 100% | Yes |
| 1968 | 365 | 100% | Yes |
| 1969 | 335 | 92% | Yes |
| 1970 | 358 | 98% | Yes |
| 1971 | 365 | 100% | Yes |
| 1972 | 362 | 99% | Yes |
| 1973 | 357 | 98% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 365 | 100% | Yes |
| 1977 | 364 | 100% | Yes |
| 1978 | 361 | 99% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 364 | 99% | Yes |
| 1981 | 364 | 100% | Yes |
| 1982 | 364 | 100% | Yes |
| 1983 | 363 | 99% | Yes |
| 1984 | 336 | 92% | Yes |
| 1985 | 333 | 91% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 364 | 100% | Yes |
| 1988 | 304 | 83% | No |
| 1989 | 240 | 66% | No |
| 1990 | 275 | 75% | No |
| 1991 | 333 | 91% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 363 | 99% | Yes |
| 1995 | 363 | 99% | Yes |
| 1996 | 363 | 99% | Yes |
| 1997 | 362 | 99% | Yes |
| 1998 | 364 | 100% | Yes |
| 1999 | 239 | 65% | No |
| 2000 | 300 | 82% | No |
| 2001 | 271 | 74% | No |
| 2002 | 331 | 91% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 363 | 99% | Yes |
| 2006 | 333 | 91% | Yes |
| 2007 | 358 | 98% | Yes |
| 2008 | 347 | 95% | Yes |
| 2009 | 315 | 86% | No |
| 2010 | 305 | 84% | No |
| 2011 | 303 | 83% | No |
| 2012 | 197 | 54% | No |
| 2013 | 252 | 69% | No |
| 2014 | 183 | 50% | No |
| 2015 | 201 | 55% | No |
| 2016 | 353 | 96% | Yes |
| 2017 | 320 | 88% | No |
| 2018 | 302 | 83% | No |
| 2019 | 310 | 85% | No |
| 2020 | 288 | 79% | No |
| 2021 | 306 | 84% | No |
| 2022 | 307 | 84% | No |
| 2023 | 255 | 70% | No |
| 2024 | 262 | 72% | No |
| 2025 | 302 | 83% | No |
| 2026 | 208 | 57% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 13 October 2026 | Alton - Melvin Price L&D, US | daily high max (Provisional) | 33.3 C (91.9 F) | 2.7 C (4.9 F) | 73 years | 34 of 100 (Routine) |
| 12 October 2026 | Alton - Melvin Price L&D, US | daily high max (Provisional) | 32.8 C (91.0 F) | 0.6 C (1.1 F) | 79 years | 32 of 100 (Routine) |
| 20 September 2026 | Alton - Melvin Price L&D, US | daily high max (Tie, Provisional) | 35.0 C (95.0 F) | tie | 48 years | 5 of 100 (Routine) |
| 20 September 2026 | Alton - Melvin Price L&D, US | daily high min (Tie, Provisional) | 22.8 C (73.0 F) | tie | 8 years | 2 of 100 (Routine) |
| 19 September 2026 | Alton - Melvin Price L&D, US | daily high max (Provisional) | 36.7 C (98.1 F) | 2.3 C (4.1 F) | 77 years | 36 of 100 (Notable) |
| 18 September 2026 | Alton - Melvin Price L&D, US | daily high max (Provisional) | 36.1 C (97.0 F) | 1.7 C (3.1 F) | 72 years | 32 of 100 (Routine) |
| 18 September 2026 | Alton - Melvin Price L&D, US | daily high min (Provisional) | 22.8 C (73.0 F) | 0.6 C (1.1 F) | 72 years | 30 of 100 (Routine) |
| 17 September 2026 | Alton - Melvin Price L&D, US | daily high min (Provisional) | 23.3 C (73.9 F) | 1.6 C (2.9 F) | 7 years | 13 of 100 (Routine) |
| 5 September 2026 | Alton - Melvin Price L&D, US | daily high min (Provisional) | 24.4 C (75.9 F) | 0.5 C (0.9 F) | 65 years | 28 of 100 (Routine) |
| 4 September 2026 | Alton - Melvin Price L&D, US | daily high min (Tie, Provisional) | 25.0 C (77.0 F) | tie | 65 years | 6 of 100 (Routine) |
| 3 September 2026 | Alton - Melvin Price L&D, US | daily high max (Provisional) | 37.2 C (99.0 F) | 1.1 C (2.0 F) | 15 years | 14 of 100 (Routine) |
| 3 September 2026 | Alton - Melvin Price L&D, US | daily high min (Provisional) | 25.0 C (77.0 F) | 0.6 C (1.1 F) | 15 years | 13 of 100 (Routine) |
| 2 September 2026 | Alton - Melvin Price L&D, US | daily high max (Provisional) | 37.2 C (99.0 F) | 0.5 C (0.9 F) | 72 years | 30 of 100 (Routine) |
| 31 August 2026 | Alton - Melvin Price L&D, US | daily high max (Provisional) | 37.8 C (100.0 F) | 1.1 C (2.0 F) | 73 years | 33 of 100 (Routine) |
| 31 August 2026 | Alton - Melvin Price L&D, US | daily high min (Tie, Provisional) | 25.0 C (77.0 F) | tie | 12 years | 2 of 100 (Routine) |
| 22 June 2026 | Alton - Melvin Price L&D, US | daily rain | 63.5 mm (2.5 in) | 23.1 mm (0.9 in) | 56 years | 42 of 100 (Notable) |
| 9 June 2026 | Alton - Melvin Price L&D, US | daily rain | 39.1 mm (1.5 in) | 3.0 mm (0.12 in) | 104 years | 42 of 100 (Notable) |
| 19 May 2026 | Alton - Melvin Price L&D, US | daily rain | 69.9 mm (2.8 in) | 44.0 mm (1.7 in) | 8 years | 43 of 100 (Notable) |
| 28 April 2026 | Alton - Melvin Price L&D, US | daily rain | 50.3 mm (2.0 in) | 17.0 mm (0.7 in) | 27 years | 29 of 100 (Routine) |
| 16 April 2026 | Alton - Melvin Price L&D, US | daily rain | 48.3 mm (1.9 in) | 5.9 mm (0.23 in) | 3 years | 13 of 100 (Routine) |
Climate Trend
51 complete years, 1946 to 2022| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1946 | 15.5 C | +2.68 C |
| 1949 | 13.2 C | +0.41 C |
| 1950 | 12.1 C | -0.74 C |
| 1951 | 12.0 C | -0.81 C |
| 1952 | 13.6 C | +0.77 C |
| 1953 | 14.2 C | +1.38 C |
| 1955 | 13.3 C | +0.49 C |
| 1958 | 12.2 C | -0.60 C |
| 1959 | 13.2 C | +0.38 C |
| 1960 | 12.4 C | -0.37 C |
| 1961 | 12.6 C | -0.24 C |
| 1962 | 12.7 C | -0.06 C |
| 1963 | 12.7 C | -0.11 C |
| 1964 | 13.4 C | +0.59 C |
| 1965 | 13.3 C | +0.47 C |
| 1966 | 12.5 C | -0.35 C |
| 1967 | 12.7 C | -0.09 C |
| 1968 | 12.5 C | -0.31 C |
| 1970 | 12.1 C | -0.71 C |
| 1971 | 12.4 C | -0.44 C |
| 1972 | 11.7 C | -1.13 C |
| 1973 | 12.8 C | -0.05 C |
| 1974 | 12.1 C | -0.70 C |
| 1975 | 12.5 C | -0.33 C |
| 1976 | 11.7 C | -1.10 C |
| 1977 | 12.5 C | -0.34 C |
| 1978 | 11.3 C | -1.51 C |
| 1979 | 11.1 C | -1.69 C |
| 1980 | 12.3 C | -0.55 C |
| 1981 | 12.4 C | -0.36 C |
| 1982 | 11.7 C | -1.15 C |
| 1983 | 12.4 C | -0.37 C |
| 1986 | 13.2 C | +0.44 C |
| 1987 | 14.4 C | +1.57 C |
| 1992 | 12.8 C | +0.04 C |
| 1993 | 12.0 C | -0.85 C |
| 1994 | 13.0 C | +0.16 C |
| 1995 | 12.5 C | -0.31 C |
| 1996 | 11.7 C | -1.11 C |
| 1997 | 12.3 C | -0.47 C |
| 1998 | 14.5 C | +1.74 C |
| 2003 | 12.4 C | -0.44 C |
| 2004 | 12.9 C | +0.12 C |
| 2005 | 14.3 C | +1.52 C |
| 2007 | 14.5 C | +1.70 C |
| 2008 | 12.6 C | -0.19 C |
| 2016 | 13.9 C | +1.05 C |
| 2017 | 13.9 C | +1.09 C |
| 2018 | 13.3 C | +0.51 C |
| 2019 | 13.2 C | +0.35 C |
| 2022 | 12.9 C | +0.11 C |
The fitted trend in annual mean temperature here over 1946 to 2022 is 0.1 C (-0.1 to 0.2) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.1 F (-0.1 to 0.3) per decade. The slope is a straight line fitted to 51 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | 0.1 C (-0.1 to 0.2) per decade | 0.1 F (-0.1 to 0.3) per decade | 1946 to 2022 | 51 | Not clearly different from zero |
| Mean daily maximum | -0.12 C (-0.28 to 0.03) per decade | -0.2 F (-0.5 to 0.1) per decade | 1946 to 2022 | 51 | Not clearly different from zero |
| Mean daily minimum | 0.2 C (0.1 to 0.3) per decade | 0.4 F (0.2 to 0.6) per decade | 1946 to 2022 | 51 | 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
1892 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 46.7 C (116.1 F) | 1946 | 36.7 C (98.1 F) | 84 |
| Coldest night (TNn) | -26.7 C (-16.1 F) | 1982 | -18.3 C (-0.9 F) | 84 |
| Wettest day (Rx1day) | 195.6 mm (7.7 in) | 1996 | 64.6 mm (2.5 in) | 88 |
| Wettest five days (Rx5day) | 273.8 mm (10.8 in) | 2015 | 110.7 mm (4.4 in) | 85 |
| Longest dry spell (CDD) | 39 days | 1979 | 21 days | 86 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1892 | n/a |
| 1893 | n/a |
| 1918 | n/a |
| 1919 | n/a |
| 1920 | n/a |
| 1921 | n/a |
| 1922 | n/a |
| 1923 | n/a |
| 1924 | n/a |
| 1925 | n/a |
| 1927 | n/a |
| 1928 | n/a |
| 1929 | n/a |
| 1930 | n/a |
| 1931 | n/a |
| 1932 | n/a |
| 1933 | n/a |
| 1934 | n/a |
| 1935 | n/a |
| 1936 | n/a |
| 1943 | 34.4 C (93.9 F) |
| 1944 | 38.9 C (102.0 F) |
| 1945 | 38.3 C (100.9 F) |
| 1946 | 46.7 C (116.1 F) |
| 1947 | 40.0 C (104.0 F) |
| 1948 | 41.1 C (106.0 F) |
| 1949 | 37.8 C (100.0 F) |
| 1950 | 36.7 C (98.1 F) |
| 1951 | 38.3 C (100.9 F) |
| 1952 | 41.7 C (107.1 F) |
| 1953 | 42.2 C (108.0 F) |
| 1954 | 43.9 C (111.0 F) |
| 1955 | 37.8 C (100.0 F) |
| 1956 | 36.7 C (98.1 F) |
| 1957 | 35.6 C (96.1 F) |
| 1958 | 33.9 C (93.0 F) |
| 1959 | 35.6 C (96.1 F) |
| 1960 | 37.2 C (99.0 F) |
| 1961 | 33.9 C (93.0 F) |
| 1962 | 37.2 C (99.0 F) |
| 1963 | 38.9 C (102.0 F) |
| 1964 | 38.3 C (100.9 F) |
| 1965 | 35.0 C (95.0 F) |
| 1966 | 40.6 C (105.1 F) |
| 1967 | 34.4 C (93.9 F) |
| 1968 | 35.6 C (96.1 F) |
| 1969 | 36.1 C (97.0 F) |
| 1970 | 36.7 C (98.1 F) |
| 1971 | 36.1 C (97.0 F) |
| 1972 | 36.7 C (98.1 F) |
| 1973 | 36.1 C (97.0 F) |
| 1974 | 37.2 C (99.0 F) |
| 1975 | 37.2 C (99.0 F) |
| 1976 | 36.7 C (98.1 F) |
| 1977 | 36.7 C (98.1 F) |
| 1978 | 36.7 C (98.1 F) |
| 1979 | 35.6 C (96.1 F) |
| 1980 | 41.1 C (106.0 F) |
| 1981 | 35.6 C (96.1 F) |
| 1982 | 36.7 C (98.1 F) |
| 1983 | 40.6 C (105.1 F) |
| 1984 | 37.2 C (99.0 F) |
| 1985 | 35.0 C (95.0 F) |
| 1986 | 37.2 C (99.0 F) |
| 1987 | 39.4 C (102.9 F) |
| 1988 | 38.3 C (100.9 F) |
| 1989 | 34.4 C (93.9 F) |
| 1990 | 36.7 C (98.1 F) |
| 1991 | 36.1 C (97.0 F) |
| 1992 | 34.4 C (93.9 F) |
| 1993 | 36.7 C (98.1 F) |
| 1994 | 35.0 C (95.0 F) |
| 1995 | 37.8 C (100.0 F) |
| 1996 | 38.3 C (100.9 F) |
| 1997 | 36.7 C (98.1 F) |
| 1998 | 37.8 C (100.0 F) |
| 1999 | 33.9 C (93.0 F) |
| 2000 | 35.6 C (96.1 F) |
| 2001 | 37.8 C (100.0 F) |
| 2002 | 35.0 C (95.0 F) |
| 2003 | 37.8 C (100.0 F) |
| 2004 | 33.9 C (93.0 F) |
| 2005 | 37.8 C (100.0 F) |
| 2006 | 38.9 C (102.0 F) |
| 2007 | 38.9 C (102.0 F) |
| 2008 | 36.1 C (97.0 F) |
| 2009 | 35.6 C (96.1 F) |
| 2010 | 37.8 C (100.0 F) |
| 2011 | 37.2 C (99.0 F) |
| 2012 | 41.1 C (106.0 F) |
| 2013 | 37.2 C (99.0 F) |
| 2014 | 34.4 C (93.9 F) |
| 2015 | 33.9 C (93.0 F) |
| 2016 | 34.4 C (93.9 F) |
| 2017 | 38.9 C (102.0 F) |
| 2018 | 33.9 C (93.0 F) |
| 2019 | 34.4 C (93.9 F) |
| 2020 | 33.3 C (91.9 F) |
| 2021 | 35.6 C (96.1 F) |
| 2022 | 36.1 C (97.0 F) |
| 2023 | 37.8 C (100.0 F) |
| 2024 | 37.8 C (100.0 F) |
| 2025 | 37.2 C (99.0 F) |
| 2026 | 37.8 C (100.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1892 | n/a |
| 1893 | n/a |
| 1918 | n/a |
| 1919 | n/a |
| 1920 | n/a |
| 1921 | n/a |
| 1922 | n/a |
| 1923 | n/a |
| 1924 | n/a |
| 1925 | n/a |
| 1927 | n/a |
| 1928 | n/a |
| 1929 | n/a |
| 1930 | n/a |
| 1931 | n/a |
| 1932 | n/a |
| 1933 | n/a |
| 1934 | n/a |
| 1935 | n/a |
| 1936 | n/a |
| 1943 | -18.9 C (-2.0 F) |
| 1944 | -18.9 C (-2.0 F) |
| 1945 | -17.8 C (0.0 F) |
| 1946 | -15.0 C (5.0 F) |
| 1947 | -16.7 C (1.9 F) |
| 1948 | -22.2 C (-8.0 F) |
| 1949 | -18.3 C (-0.9 F) |
| 1950 | -16.1 C (3.0 F) |
| 1951 | -22.2 C (-8.0 F) |
| 1952 | -16.1 C (3.0 F) |
| 1953 | -15.0 C (5.0 F) |
| 1954 | -16.7 C (1.9 F) |
| 1955 | -20.0 C (-4.0 F) |
| 1956 | -16.1 C (3.0 F) |
| 1957 | -17.8 C (0.0 F) |
| 1958 | -20.0 C (-4.0 F) |
| 1959 | -20.0 C (-4.0 F) |
| 1960 | -18.3 C (-0.9 F) |
| 1961 | -18.3 C (-0.9 F) |
| 1962 | -21.7 C (-7.1 F) |
| 1963 | -23.3 C (-9.9 F) |
| 1964 | -16.1 C (3.0 F) |
| 1965 | -21.1 C (-6.0 F) |
| 1966 | -21.7 C (-7.1 F) |
| 1967 | -20.6 C (-5.1 F) |
| 1968 | -21.7 C (-7.1 F) |
| 1969 | -17.2 C (1.0 F) |
| 1970 | -23.3 C (-9.9 F) |
| 1971 | -17.8 C (0.0 F) |
| 1972 | -22.8 C (-9.0 F) |
| 1973 | -17.8 C (0.0 F) |
| 1974 | -22.8 C (-9.0 F) |
| 1975 | -18.3 C (-0.9 F) |
| 1976 | -22.2 C (-8.0 F) |
| 1977 | -26.1 C (-15.0 F) |
| 1978 | -19.4 C (-2.9 F) |
| 1979 | -23.9 C (-11.0 F) |
| 1980 | -18.9 C (-2.0 F) |
| 1981 | -22.2 C (-8.0 F) |
| 1982 | -26.7 C (-16.1 F) |
| 1983 | -26.7 C (-16.1 F) |
| 1984 | -21.7 C (-7.1 F) |
| 1985 | -26.1 C (-15.0 F) |
| 1986 | -17.8 C (0.0 F) |
| 1987 | -16.1 C (3.0 F) |
| 1988 | -18.9 C (-2.0 F) |
| 1989 | -26.7 C (-16.1 F) |
| 1990 | -16.1 C (3.0 F) |
| 1991 | -15.6 C (3.9 F) |
| 1992 | -13.3 C (8.1 F) |
| 1993 | -16.1 C (3.0 F) |
| 1994 | -22.2 C (-8.0 F) |
| 1995 | -16.1 C (3.0 F) |
| 1996 | -26.1 C (-15.0 F) |
| 1997 | -18.3 C (-0.9 F) |
| 1998 | -13.9 C (7.0 F) |
| 1999 | -18.3 C (-0.9 F) |
| 2000 | -17.2 C (1.0 F) |
| 2001 | -15.6 C (3.9 F) |
| 2002 | -14.4 C (6.1 F) |
| 2003 | -17.8 C (0.0 F) |
| 2004 | -21.1 C (-6.0 F) |
| 2005 | -15.0 C (5.0 F) |
| 2006 | -16.1 C (3.0 F) |
| 2007 | -16.1 C (3.0 F) |
| 2008 | -15.0 C (5.0 F) |
| 2009 | -17.8 C (0.0 F) |
| 2010 | -17.2 C (1.0 F) |
| 2011 | -17.8 C (0.0 F) |
| 2012 | -10.0 C (14.0 F) |
| 2013 | -13.9 C (7.0 F) |
| 2014 | -18.9 C (-2.0 F) |
| 2015 | -17.8 C (0.0 F) |
| 2016 | -17.2 C (1.0 F) |
| 2017 | -17.2 C (1.0 F) |
| 2018 | -21.7 C (-7.1 F) |
| 2019 | -18.9 C (-2.0 F) |
| 2020 | -16.7 C (1.9 F) |
| 2021 | -20.0 C (-4.0 F) |
| 2022 | -20.0 C (-4.0 F) |
| 2023 | -12.8 C (9.0 F) |
| 2024 | -21.1 C (-6.0 F) |
| 2025 | -17.8 C (0.0 F) |
| 2026 | -21.1 C (-6.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1892 | 22.1 mm (0.9 in) |
| 1893 | 44.7 mm (1.8 in) |
| 1918 | n/a |
| 1919 | n/a |
| 1920 | 35.6 mm (1.4 in) |
| 1921 | 66.0 mm (2.6 in) |
| 1922 | n/a |
| 1923 | n/a |
| 1924 | n/a |
| 1925 | n/a |
| 1927 | n/a |
| 1928 | n/a |
| 1929 | n/a |
| 1930 | n/a |
| 1931 | n/a |
| 1932 | n/a |
| 1933 | n/a |
| 1934 | n/a |
| 1935 | n/a |
| 1936 | n/a |
| 1943 | 34.3 mm (1.4 in) |
| 1944 | 82.3 mm (3.2 in) |
| 1945 | 53.8 mm (2.1 in) |
| 1946 | 137.2 mm (5.4 in) |
| 1947 | 41.7 mm (1.6 in) |
| 1948 | 64.3 mm (2.5 in) |
| 1949 | 84.6 mm (3.3 in) |
| 1950 | 90.9 mm (3.6 in) |
| 1951 | 63.8 mm (2.5 in) |
| 1952 | 118.9 mm (4.7 in) |
| 1953 | 69.9 mm (2.8 in) |
| 1954 | 48.3 mm (1.9 in) |
| 1955 | 51.6 mm (2.0 in) |
| 1956 | 52.8 mm (2.1 in) |
| 1957 | 85.9 mm (3.4 in) |
| 1958 | 38.4 mm (1.5 in) |
| 1959 | 71.1 mm (2.8 in) |
| 1960 | 65.3 mm (2.6 in) |
| 1961 | 80.3 mm (3.2 in) |
| 1962 | 46.7 mm (1.8 in) |
| 1963 | 61.5 mm (2.4 in) |
| 1964 | 45.0 mm (1.8 in) |
| 1965 | 31.8 mm (1.3 in) |
| 1966 | 48.3 mm (1.9 in) |
| 1967 | 58.2 mm (2.3 in) |
| 1968 | 50.5 mm (2.0 in) |
| 1969 | 87.9 mm (3.5 in) |
| 1970 | 60.2 mm (2.4 in) |
| 1971 | 69.3 mm (2.7 in) |
| 1972 | 73.2 mm (2.9 in) |
| 1973 | 79.5 mm (3.1 in) |
| 1974 | 96.3 mm (3.8 in) |
| 1975 | 71.1 mm (2.8 in) |
| 1976 | 61.0 mm (2.4 in) |
| 1977 | 104.6 mm (4.1 in) |
| 1978 | 60.2 mm (2.4 in) |
| 1979 | 75.4 mm (3.0 in) |
| 1980 | 83.1 mm (3.3 in) |
| 1981 | 48.3 mm (1.9 in) |
| 1982 | 68.8 mm (2.7 in) |
| 1983 | 75.4 mm (3.0 in) |
| 1984 | 53.3 mm (2.1 in) |
| 1985 | 76.2 mm (3.0 in) |
| 1986 | 88.9 mm (3.5 in) |
| 1987 | 47.2 mm (1.9 in) |
| 1988 | 57.9 mm (2.3 in) |
| 1989 | 36.8 mm (1.4 in) |
| 1990 | 69.6 mm (2.7 in) |
| 1991 | 48.8 mm (1.9 in) |
| 1992 | 64.8 mm (2.6 in) |
| 1993 | 66.8 mm (2.6 in) |
| 1994 | 50.8 mm (2.0 in) |
| 1995 | 119.4 mm (4.7 in) |
| 1996 | 195.6 mm (7.7 in) |
| 1997 | 47.0 mm (1.9 in) |
| 1998 | 53.6 mm (2.1 in) |
| 1999 | 53.3 mm (2.1 in) |
| 2000 | 63.5 mm (2.5 in) |
| 2001 | 59.4 mm (2.3 in) |
| 2002 | 107.4 mm (4.2 in) |
| 2003 | 95.8 mm (3.8 in) |
| 2004 | 126.2 mm (5.0 in) |
| 2005 | 67.3 mm (2.6 in) |
| 2006 | 45.7 mm (1.8 in) |
| 2007 | 49.0 mm (1.9 in) |
| 2008 | 93.7 mm (3.7 in) |
| 2009 | 49.3 mm (1.9 in) |
| 2010 | 66.5 mm (2.6 in) |
| 2011 | 127.0 mm (5.0 in) |
| 2012 | 55.1 mm (2.2 in) |
| 2013 | 57.2 mm (2.3 in) |
| 2014 | 45.7 mm (1.8 in) |
| 2015 | 141.0 mm (5.6 in) |
| 2016 | 101.6 mm (4.0 in) |
| 2017 | 83.3 mm (3.3 in) |
| 2018 | 57.2 mm (2.3 in) |
| 2019 | 50.8 mm (2.0 in) |
| 2020 | 93.2 mm (3.7 in) |
| 2021 | 49.0 mm (1.9 in) |
| 2022 | 81.3 mm (3.2 in) |
| 2023 | 63.5 mm (2.5 in) |
| 2024 | 131.8 mm (5.2 in) |
| 2025 | 89.4 mm (3.5 in) |
| 2026 | 69.9 mm (2.8 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1892 | n/a |
| 1893 | 118.4 mm (4.7 in) |
| 1918 | n/a |
| 1919 | n/a |
| 1920 | n/a |
| 1921 | n/a |
| 1922 | n/a |
| 1923 | n/a |
| 1924 | n/a |
| 1925 | n/a |
| 1927 | n/a |
| 1928 | n/a |
| 1929 | n/a |
| 1930 | n/a |
| 1931 | n/a |
| 1932 | n/a |
| 1933 | n/a |
| 1934 | n/a |
| 1935 | n/a |
| 1936 | n/a |
| 1943 | 52.1 mm (2.1 in) |
| 1944 | 126.3 mm (5.0 in) |
| 1945 | 110.7 mm (4.4 in) |
| 1946 | 259.1 mm (10.2 in) |
| 1947 | 77.0 mm (3.0 in) |
| 1948 | 74.3 mm (2.9 in) |
| 1949 | 129.7 mm (5.1 in) |
| 1950 | 137.9 mm (5.4 in) |
| 1951 | 111.8 mm (4.4 in) |
| 1952 | 130.6 mm (5.1 in) |
| 1953 | 72.5 mm (2.9 in) |
| 1954 | 77.8 mm (3.1 in) |
| 1955 | 78.5 mm (3.1 in) |
| 1956 | 119.9 mm (4.7 in) |
| 1957 | 158.1 mm (6.2 in) |
| 1958 | 86.7 mm (3.4 in) |
| 1959 | 73.9 mm (2.9 in) |
| 1960 | 149.7 mm (5.9 in) |
| 1961 | 153.3 mm (6.0 in) |
| 1962 | 119.2 mm (4.7 in) |
| 1963 | 122.9 mm (4.8 in) |
| 1964 | 75.2 mm (3.0 in) |
| 1965 | 45.8 mm (1.8 in) |
| 1966 | 95.3 mm (3.8 in) |
| 1967 | 93.0 mm (3.7 in) |
| 1968 | 116.6 mm (4.6 in) |
| 1969 | 129.1 mm (5.1 in) |
| 1970 | 117.1 mm (4.6 in) |
| 1971 | 118.1 mm (4.6 in) |
| 1972 | 102.9 mm (4.1 in) |
| 1973 | 104.1 mm (4.1 in) |
| 1974 | 107.9 mm (4.2 in) |
| 1975 | 96.2 mm (3.8 in) |
| 1976 | 70.4 mm (2.8 in) |
| 1977 | 114.5 mm (4.5 in) |
| 1978 | 89.6 mm (3.5 in) |
| 1979 | 116.3 mm (4.6 in) |
| 1980 | 83.1 mm (3.3 in) |
| 1981 | 88.6 mm (3.5 in) |
| 1982 | 119.2 mm (4.7 in) |
| 1983 | 109.3 mm (4.3 in) |
| 1984 | 68.8 mm (2.7 in) |
| 1985 | 147.8 mm (5.8 in) |
| 1986 | 180.4 mm (7.1 in) |
| 1987 | 71.4 mm (2.8 in) |
| 1988 | 79.1 mm (3.1 in) |
| 1989 | 43.5 mm (1.7 in) |
| 1990 | 122.6 mm (4.8 in) |
| 1991 | 71.6 mm (2.8 in) |
| 1992 | 103.4 mm (4.1 in) |
| 1993 | 153.3 mm (6.0 in) |
| 1994 | 112.7 mm (4.4 in) |
| 1995 | 177.1 mm (7.0 in) |
| 1996 | 241.3 mm (9.5 in) |
| 1997 | 49.3 mm (1.9 in) |
| 1998 | 112.3 mm (4.4 in) |
| 1999 | 60.9 mm (2.4 in) |
| 2000 | 103.2 mm (4.1 in) |
| 2001 | 129.7 mm (5.1 in) |
| 2002 | 125.0 mm (4.9 in) |
| 2003 | 161.8 mm (6.4 in) |
| 2004 | 134.3 mm (5.3 in) |
| 2005 | 148.4 mm (5.8 in) |
| 2006 | 67.0 mm (2.6 in) |
| 2007 | 66.2 mm (2.6 in) |
| 2008 | 105.8 mm (4.2 in) |
| 2009 | 107.5 mm (4.2 in) |
| 2010 | 102.5 mm (4.0 in) |
| 2011 | 129.8 mm (5.1 in) |
| 2012 | 45.5 mm (1.8 in) |
| 2013 | 87.4 mm (3.4 in) |
| 2014 | 51.3 mm (2.0 in) |
| 2015 | 273.8 mm (10.8 in) |
| 2016 | 132.8 mm (5.2 in) |
| 2017 | 205.8 mm (8.1 in) |
| 2018 | 107.1 mm (4.2 in) |
| 2019 | 89.2 mm (3.5 in) |
| 2020 | 127.0 mm (5.0 in) |
| 2021 | 114.6 mm (4.5 in) |
| 2022 | 135.9 mm (5.4 in) |
| 2023 | 63.5 mm (2.5 in) |
| 2024 | 192.0 mm (7.6 in) |
| 2025 | 113.6 mm (4.5 in) |
| 2026 | 101.6 mm (4.0 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1892 | 1 day |
| 1893 | 27 days |
| 1918 | n/a |
| 1919 | n/a |
| 1920 | n/a |
| 1921 | n/a |
| 1922 | n/a |
| 1923 | n/a |
| 1924 | n/a |
| 1925 | n/a |
| 1927 | n/a |
| 1928 | n/a |
| 1929 | n/a |
| 1930 | n/a |
| 1931 | n/a |
| 1932 | n/a |
| 1933 | n/a |
| 1934 | n/a |
| 1935 | n/a |
| 1936 | n/a |
| 1943 | 27 days |
| 1944 | 29 days |
| 1945 | 23 days |
| 1946 | 17 days |
| 1947 | 24 days |
| 1948 | 21 days |
| 1949 | 21 days |
| 1950 | 29 days |
| 1951 | 14 days |
| 1952 | 27 days |
| 1953 | 22 days |
| 1954 | 19 days |
| 1955 | 29 days |
| 1956 | 27 days |
| 1957 | 22 days |
| 1958 | 25 days |
| 1959 | 22 days |
| 1960 | 14 days |
| 1961 | 17 days |
| 1962 | 21 days |
| 1963 | 29 days |
| 1964 | 29 days |
| 1965 | 14 days |
| 1966 | 20 days |
| 1967 | 25 days |
| 1968 | 24 days |
| 1969 | 17 days |
| 1970 | 25 days |
| 1971 | 21 days |
| 1972 | 25 days |
| 1973 | 15 days |
| 1974 | 27 days |
| 1975 | 16 days |
| 1976 | 25 days |
| 1977 | 18 days |
| 1978 | 20 days |
| 1979 | 39 days |
| 1980 | 25 days |
| 1981 | 23 days |
| 1982 | 15 days |
| 1983 | 29 days |
| 1984 | 19 days |
| 1985 | 16 days |
| 1986 | 27 days |
| 1987 | 27 days |
| 1988 | 25 days |
| 1989 | 20 days |
| 1990 | 19 days |
| 1991 | 14 days |
| 1992 | 29 days |
| 1993 | 17 days |
| 1994 | 17 days |
| 1995 | 27 days |
| 1996 | 22 days |
| 1997 | 18 days |
| 1998 | 14 days |
| 1999 | 21 days |
| 2000 | 18 days |
| 2001 | 15 days |
| 2002 | 25 days |
| 2003 | 23 days |
| 2004 | 20 days |
| 2005 | 20 days |
| 2006 | 19 days |
| 2007 | 23 days |
| 2008 | 20 days |
| 2009 | 15 days |
| 2010 | 28 days |
| 2011 | 16 days |
| 2012 | 10 days |
| 2013 | 11 days |
| 2014 | 9 days |
| 2015 | 12 days |
| 2016 | 22 days |
| 2017 | 31 days |
| 2018 | 21 days |
| 2019 | 22 days |
| 2020 | 21 days |
| 2021 | 14 days |
| 2022 | 19 days |
| 2023 | 21 days |
| 2024 | 27 days |
| 2025 | 24 days |
| 2026 | 21 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
51 years with a frostAcross 51 years with a frost, the median last spring frost at Alton - Melvin Price L&D falls on 7 April and the median first autumn frost on 5 November, which leaves a median of 213 days between them.
Fitted over all years, the growing season changes by +2.3 days per decade at this station.
| Measure | Median, all years | Earliest period | Recent period (1973 to 2022) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 7 April | n/a | 6 April | n/a | -1.7 days per decade |
| First autumn frost | 5 November | n/a | 8 November | n/a | +0.7 days per decade |
| Growing days | 213 days | n/a | 213 days | n/a | +2.3 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
68 years, 1944 to 2025A day with at least 67.3 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 173.7 mm (6.8 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 67.3 mm (2.6 in) | |
| 5 years | 91.0 mm (3.6 in) | |
| 10 years | 108.5 mm (4.3 in) | |
| 25 years | 132.7 mm (5.2 in) | |
| 50 years | 152.5 mm (6.0 in) | |
| 100 years | 173.7 mm (6.8 in) | Longer than the 68 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, 68 years of values from 1944 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: 195.6 mm (7.7 in) in 1996; 137.2 mm (5.4 in) in 1946; 131.8 mm (5.2 in) in 2024.
Station Changes
2 suspected2 changes were suspected in the annual mean temperature of Alton - Melvin Price L&D, at 1968 and 2005. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1968 ran 0.5 C (0.8 F) lower than in the years before (possible change).
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2005 ran 0.5 C (1.0 F) higher than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1968 | -0.4 | -0.8 | possible | 5 |
| 2005 | +0.5 | +1.0 | 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.
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 (2026-10-15).