Pontiac Weather Records (USC00116910)
Record envelope, standing records and threshold days for Pontiac (USC00116910), Illinois, United States, with 115 years of record.
Key Facts for Pontiac
- Pontiac (USC00116910) is a weather station in Illinois, United States at 40.88 latitude and -88.64 longitude, 198 m (650 ft) above sea level.
- The station reports from 1903 to 2017, 115 years of record.
- 1,464 records set at Pontiac still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Pontiac tied a daily record low maximum temperature of 11.1 C (52.0 F) on 20 May 2017.
About the Station
- Location: Illinois, United States, 40.88 latitude, -88.64 longitude.
- Elevation: 198 m (650 ft).
- Period of record: 1903 to 2017, 115 years.
- Eligible elements: tmax, tmin, 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 | 20.6 C (69.1 F) | -31.1 C (-24.0 F) | n/a | n/a |
| Feb | 22.8 C (73.0 F) | -30.6 C (-23.1 F) | n/a | n/a |
| Mar | 30.0 C (86.0 F) | -25.6 C (-14.1 F) | n/a | n/a |
| Apr | 35.6 C (96.1 F) | -11.7 C (10.9 F) | n/a | n/a |
| May | 38.9 C (102.0 F) | -4.4 C (24.1 F) | n/a | n/a |
| Jun | 40.6 C (105.1 F) | 3.3 C (37.9 F) | n/a | n/a |
| Jul | 42.2 C (108.0 F) | 5.6 C (42.1 F) | n/a | n/a |
| Aug | 40.0 C (104.0 F) | 4.4 C (39.9 F) | n/a | n/a |
| Sep | 39.4 C (102.9 F) | -3.3 C (26.1 F) | n/a | n/a |
| Oct | 34.4 C (93.9 F) | -12.8 C (9.0 F) | n/a | n/a |
| Nov | 27.8 C (82.0 F) | -20.6 C (-5.1 F) | n/a | n/a |
| Dec | 21.7 C (71.1 F) | -30.6 C (-23.1 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1903 | 13 |
| 1904 | 12 |
| 1905 | 11 |
| 1906 | 12 |
| 1907 | 17 |
| 1908 | 10 |
| 1909 | 27 |
| 1910 | 25 |
| 1911 | 25 |
| 1912 | 13 |
| 1913 | 23 |
| 1914 | 16 |
| 1915 | 17 |
| 1916 | 20 |
| 1917 | 14 |
| 1918 | 21 |
| 1919 | 6 |
| 1920 | 24 |
| 1921 | 14 |
| 1922 | 14 |
| 1923 | 13 |
| 1924 | 11 |
| 1925 | 29 |
| 1926 | 7 |
| 1927 | 10 |
| 1928 | 21 |
| 1929 | 21 |
| 1930 | 38 |
| 1931 | 24 |
| 1932 | 12 |
| 1933 | 25 |
| 1934 | 35 |
| 1935 | 13 |
| 1936 | 41 |
| 1937 | 6 |
| 1938 | 16 |
| 1939 | 17 |
| 1940 | 8 |
| 1941 | 14 |
| 1942 | 19 |
| 1943 | 9 |
| 1944 | 4 |
| 1945 | 10 |
| 1946 | 6 |
| 1947 | 3 |
| 1948 | 4 |
| 1949 | 5 |
| 1950 | 21 |
| 1951 | 11 |
| 1952 | 9 |
| 1953 | 9 |
| 1954 | 7 |
| 1955 | 7 |
| 1956 | 8 |
| 1957 | 5 |
| 1958 | 14 |
| 1959 | 11 |
| 1960 | 17 |
| 1961 | 1 |
| 1962 | 13 |
| 1963 | 22 |
| 1964 | 7 |
| 1965 | 7 |
| 1966 | 11 |
| 1967 | 7 |
| 1968 | 6 |
| 1969 | 4 |
| 1970 | 7 |
| 1971 | 10 |
| 1972 | 13 |
| 1973 | 3 |
| 1974 | 16 |
| 1975 | 11 |
| 1976 | 8 |
| 1977 | 13 |
| 1978 | 6 |
| 1979 | 8 |
| 1980 | 8 |
| 1981 | 9 |
| 1982 | 26 |
| 1983 | 18 |
| 1984 | 16 |
| 1985 | 10 |
| 1986 | 18 |
| 1987 | 9 |
| 1988 | 16 |
| 1989 | 25 |
| 1990 | 13 |
| 1991 | 25 |
| 1992 | 16 |
| 1993 | 6 |
| 1994 | 7 |
| 1995 | 6 |
| 1996 | 13 |
| 1997 | 7 |
| 1998 | 14 |
| 1999 | 8 |
| 2000 | 9 |
| 2001 | 2 |
| 2002 | 16 |
| 2003 | 7 |
| 2004 | 11 |
| 2005 | 7 |
| 2006 | 5 |
| 2007 | 8 |
| 2008 | 5 |
| 2009 | 12 |
| 2010 | 3 |
| 2011 | 3 |
| 2012 | 17 |
| 2013 | 8 |
| 2014 | 12 |
| 2015 | 8 |
| 2016 | 7 |
| 2017 | 7 |
All-Time Record Progression
11 new records| Date | Kind | Detail |
|---|---|---|
| 1933-02-09 | Record low maximum temperature | Record low maximum temperature -20.6 C (-5.1 F) |
| 1933-09-26 | Record daily precipitation | Record daily precipitation 108.0 mm (4.3 in) |
| 1934-07-22 | Record high maximum temperature | Record high maximum temperature 41.7 C (107.1 F) |
| 1936-07-14 | Record high maximum temperature | Record high maximum temperature 42.2 C (108.0 F) |
| 1943-08-03 | Record daily precipitation | Record daily precipitation 142.0 mm (5.6 in) |
| 1973-06-17 | Record daily precipitation | Record daily precipitation 144.0 mm (5.7 in) |
| 1982-01-17 | Record low maximum temperature | Record low maximum temperature -22.2 C (-8.0 F) |
| 1983-12-25 | Record low maximum temperature | Record low maximum temperature -23.9 C (-11.0 F) |
| 1994-01-19 | Record low maximum temperature | Record low maximum temperature -24.4 C (-11.9 F) |
| 1999-01-09 | Record snow depth | Record snow depth 55.9 cm (22.0 in) |
| 1999-01-11 | Record snow depth | Record snow depth 58.4 cm (23.0 in) |
Wettest Day of Each Month
Jun: 144.0 mm (5.7 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 86.4 mm (3.4 in) | 8 January 2008 |
| Feb | 64.8 mm (2.6 in) | 6 February 1942 |
| Mar | 96.5 mm (3.8 in) | 12 March 1923 |
| Apr | 68.6 mm (2.7 in) | 27 April 1943 |
| May | 120.9 mm (4.8 in) | 11 May 1962 |
| Jun | 144.0 mm (5.7 in) | 17 June 1973 |
| Jul | 110.5 mm (4.4 in) | 18 July 2007 |
| Aug | 142.0 mm (5.6 in) | 3 August 1943 |
| Sep | 108.0 mm (4.3 in) | 26 September 1933 |
| Oct | 75.2 mm (3.0 in) | 23 October 1957 |
| Nov | 112.3 mm (4.4 in) | 28 November 1990 |
| Dec | 139.7 mm (5.5 in) | 3 December 1982 |
Period of Record Coverage
1903 to 2017| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1903 | 365 | 100% | Yes |
| 1904 | 366 | 100% | Yes |
| 1905 | 364 | 100% | Yes |
| 1906 | 365 | 100% | Yes |
| 1907 | 364 | 100% | Yes |
| 1908 | 365 | 100% | Yes |
| 1909 | 365 | 100% | Yes |
| 1910 | 365 | 100% | Yes |
| 1911 | 364 | 100% | Yes |
| 1912 | 363 | 99% | Yes |
| 1913 | 364 | 100% | Yes |
| 1914 | 363 | 99% | Yes |
| 1915 | 365 | 100% | Yes |
| 1916 | 366 | 100% | Yes |
| 1917 | 365 | 100% | Yes |
| 1918 | 365 | 100% | Yes |
| 1919 | 365 | 100% | Yes |
| 1920 | 366 | 100% | Yes |
| 1921 | 365 | 100% | Yes |
| 1922 | 364 | 100% | Yes |
| 1923 | 365 | 100% | Yes |
| 1924 | 366 | 100% | Yes |
| 1925 | 365 | 100% | Yes |
| 1926 | 365 | 100% | Yes |
| 1927 | 364 | 100% | Yes |
| 1928 | 366 | 100% | Yes |
| 1929 | 365 | 100% | Yes |
| 1930 | 364 | 100% | Yes |
| 1931 | 364 | 100% | Yes |
| 1932 | 365 | 100% | Yes |
| 1933 | 364 | 100% | Yes |
| 1934 | 365 | 100% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 365 | 100% | Yes |
| 1940 | 366 | 100% | Yes |
| 1941 | 364 | 100% | Yes |
| 1942 | 365 | 100% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 366 | 100% | Yes |
| 1945 | 365 | 100% | Yes |
| 1946 | 365 | 100% | Yes |
| 1947 | 365 | 100% | Yes |
| 1948 | 363 | 99% | Yes |
| 1949 | 365 | 100% | Yes |
| 1950 | 365 | 100% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 366 | 100% | Yes |
| 1953 | 365 | 100% | Yes |
| 1954 | 365 | 100% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 364 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 356 | 98% | Yes |
| 1960 | 366 | 100% | Yes |
| 1961 | 303 | 83% | No |
| 1962 | 365 | 100% | Yes |
| 1963 | 365 | 100% | Yes |
| 1964 | 366 | 100% | Yes |
| 1965 | 365 | 100% | Yes |
| 1966 | 365 | 100% | Yes |
| 1967 | 364 | 100% | Yes |
| 1968 | 366 | 100% | Yes |
| 1969 | 364 | 100% | Yes |
| 1970 | 362 | 99% | Yes |
| 1971 | 363 | 99% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 364 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 364 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 363 | 99% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 363 | 99% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 361 | 99% | Yes |
| 1982 | 358 | 98% | Yes |
| 1983 | 359 | 98% | Yes |
| 1984 | 310 | 85% | No |
| 1985 | 313 | 86% | No |
| 1986 | 333 | 91% | Yes |
| 1987 | 364 | 100% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 365 | 100% | Yes |
| 1990 | 365 | 100% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 366 | 100% | Yes |
| 1993 | 363 | 99% | Yes |
| 1994 | 364 | 100% | Yes |
| 1995 | 364 | 100% | Yes |
| 1996 | 363 | 99% | Yes |
| 1997 | 364 | 100% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 364 | 100% | Yes |
| 2000 | 359 | 98% | Yes |
| 2001 | 364 | 100% | Yes |
| 2002 | 364 | 100% | Yes |
| 2003 | 365 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 365 | 100% | Yes |
| 2006 | 365 | 100% | Yes |
| 2007 | 364 | 100% | Yes |
| 2008 | 354 | 97% | Yes |
| 2009 | 362 | 99% | Yes |
| 2010 | 362 | 99% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 365 | 100% | Yes |
| 2013 | 364 | 100% | Yes |
| 2014 | 350 | 96% | Yes |
| 2015 | 352 | 96% | Yes |
| 2016 | 346 | 95% | Yes |
| 2017 | 134 | 37% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 20 May 2017 | Pontiac, US | daily low max (Tie) | 11.1 C (52.0 F) | tie | 16 years | 3 of 100 (Routine) |
| 18 May 2017 | Pontiac, US | daily high min | 21.7 C (71.1 F) | 2.3 C (4.1 F) | 106 years | 44 of 100 (Notable) |
| 30 March 2017 | Pontiac, US | daily rain | 22.1 mm (0.9 in) | 3.3 mm (0.13 in) | 95 years | 20 of 100 (Routine) |
| 25 February 2017 | Pontiac, US | daily high max (Tie) | 20.6 C (69.1 F) | tie | 85 years | 8 of 100 (Routine) |
| 23 February 2017 | Pontiac, US | daily high max | 20.6 C (69.1 F) | 1.7 C (3.1 F) | 95 years | 40 of 100 (Notable) |
| 21 February 2017 | Pontiac, US | daily high max | 22.2 C (72.0 F) | 2.8 C (5.0 F) | 87 years | 40 of 100 (Notable) |
| 21 February 2017 | Pontiac, US | daily high min | 7.8 C (46.0 F) | 1.7 C (3.1 F) | 92 years | 39 of 100 (Notable) |
| 20 February 2017 | Pontiac, US | daily high max | 20.6 C (69.1 F) | 1.2 C (2.2 F) | 87 years | 37 of 100 (Notable) |
| 18 February 2017 | Pontiac, US | monthly high max | 22.8 C (73.0 F) | 0.6 C (1.1 F) | 96 years | 48 of 100 (Notable) |
| 22 January 2017 | Pontiac, US | daily high max | 16.1 C (61.0 F) | 0.5 C (0.9 F) | 84 years | 35 of 100 (Notable) |
| 19 December 2016 | Pontiac, US | daily low max | -16.1 C (3.0 F) | 0.5 C (0.9 F) | 33 years | 19 of 100 (Routine) |
| 5 December 2016 | Pontiac, US | daily snowfall | 10.2 cm (4.0 in) | 2.6 cm (1.0 in) | 13 years | 19 of 100 (Routine) |
| 18 November 2016 | Pontiac, US | daily high max | 23.9 C (75.0 F) | 0.6 C (1.1 F) | 86 years | 35 of 100 (Notable) |
| 2 November 2016 | Pontiac, US | daily high min (Tie) | 15.6 C (60.1 F) | tie | 80 years | 8 of 100 (Routine) |
| 2 November 2016 | Pontiac, US | daily high max (Tie) | 26.7 C (80.1 F) | tie | 16 years | 3 of 100 (Routine) |
| 18 October 2016 | Pontiac, US | daily high min | 21.1 C (70.0 F) | 5.0 C (9.0 F) | 108 years | 49 of 100 (Notable) |
| 18 October 2016 | Pontiac, US | daily high max | 30.0 C (86.0 F) | 0.6 C (1.1 F) | 108 years | 40 of 100 (Notable) |
| 17 October 2016 | Pontiac, US | daily high min (Tie) | 18.3 C (64.9 F) | tie | 48 years | 6 of 100 (Routine) |
| 12 August 2016 | Pontiac, US | daily high min | 25.0 C (77.0 F) | 1.1 C (2.0 F) | 81 years | 37 of 100 (Notable) |
| 4 July 2016 | Pontiac, US | daily low max | 18.9 C (66.0 F) | 2.2 C (4.0 F) | 19 years | 21 of 100 (Routine) |
Climate Trend
110 complete years, 1903 to 2016| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1903 | 10.3 C | -0.55 C |
| 1904 | 9.4 C | -1.50 C |
| 1905 | 10.4 C | -0.45 C |
| 1906 | 11.4 C | +0.48 C |
| 1907 | 10.6 C | -0.30 C |
| 1908 | 11.9 C | +0.97 C |
| 1909 | 10.9 C | -0.01 C |
| 1910 | 11.0 C | +0.14 C |
| 1911 | 11.8 C | +0.89 C |
| 1912 | 10.0 C | -0.87 C |
| 1913 | 11.8 C | +0.87 C |
| 1914 | 11.4 C | +0.52 C |
| 1915 | 10.9 C | -0.03 C |
| 1916 | 10.9 C | +0.06 C |
| 1917 | 9.4 C | -1.49 C |
| 1918 | 11.1 C | +0.25 C |
| 1919 | 11.6 C | +0.72 C |
| 1920 | 11.0 C | +0.11 C |
| 1921 | 13.5 C | +2.57 C |
| 1922 | 12.3 C | +1.40 C |
| 1923 | 11.5 C | +0.58 C |
| 1924 | 9.9 C | -0.98 C |
| 1925 | 11.2 C | +0.33 C |
| 1926 | 10.4 C | -0.46 C |
| 1927 | 11.6 C | +0.72 C |
| 1928 | 11.4 C | +0.54 C |
| 1929 | 10.5 C | -0.34 C |
| 1930 | 12.1 C | +1.25 C |
| 1931 | 13.4 C | +2.48 C |
| 1932 | 11.7 C | +0.86 C |
| 1933 | 12.6 C | +1.67 C |
| 1934 | 12.2 C | +1.36 C |
| 1935 | 11.0 C | +0.13 C |
| 1936 | 11.3 C | +0.40 C |
| 1937 | 10.7 C | -0.19 C |
| 1938 | 12.6 C | +1.75 C |
| 1939 | 12.2 C | +1.36 C |
| 1940 | 10.8 C | -0.11 C |
| 1941 | 12.4 C | +1.48 C |
| 1942 | 11.2 C | +0.28 C |
| 1943 | 10.4 C | -0.51 C |
| 1944 | 11.1 C | +0.25 C |
| 1945 | 10.3 C | -0.54 C |
| 1946 | 12.0 C | +1.11 C |
| 1947 | 10.5 C | -0.34 C |
| 1948 | 10.8 C | -0.10 C |
| 1949 | 11.3 C | +0.40 C |
| 1950 | 9.4 C | -1.50 C |
| 1951 | 9.7 C | -1.15 C |
| 1952 | 11.3 C | +0.44 C |
| 1953 | 11.8 C | +0.92 C |
| 1954 | 11.8 C | +0.89 C |
| 1955 | 11.1 C | +0.21 C |
| 1956 | 11.4 C | +0.49 C |
| 1957 | 10.7 C | -0.15 C |
| 1958 | 9.9 C | -1.00 C |
| 1959 | 10.8 C | -0.05 C |
| 1960 | 10.0 C | -0.93 C |
| 1962 | 10.9 C | +0.05 C |
| 1963 | 10.8 C | -0.10 C |
| 1964 | 11.9 C | +1.05 C |
| 1965 | 11.3 C | +0.41 C |
| 1966 | 10.5 C | -0.37 C |
| 1967 | 10.3 C | -0.58 C |
| 1968 | 10.9 C | +0.02 C |
| 1969 | 10.3 C | -0.60 C |
| 1970 | 10.9 C | +0.02 C |
| 1971 | 11.5 C | +0.65 C |
| 1972 | 10.1 C | -0.79 C |
| 1973 | 11.9 C | +0.97 C |
| 1974 | 11.0 C | +0.16 C |
| 1975 | 11.1 C | +0.24 C |
| 1976 | 10.4 C | -0.52 C |
| 1977 | 10.7 C | -0.15 C |
| 1978 | 9.8 C | -1.10 C |
| 1979 | 9.6 C | -1.24 C |
| 1980 | 10.8 C | -0.10 C |
| 1981 | 9.8 C | -1.11 C |
| 1982 | 9.3 C | -1.57 C |
| 1983 | 10.4 C | -0.49 C |
| 1987 | 11.3 C | +0.45 C |
| 1988 | 10.2 C | -0.70 C |
| 1989 | 8.9 C | -2.02 C |
| 1990 | 11.2 C | +0.27 C |
| 1991 | 11.2 C | +0.36 C |
| 1992 | 10.0 C | -0.89 C |
| 1993 | 9.6 C | -1.25 C |
| 1994 | 10.3 C | -0.62 C |
| 1995 | 10.0 C | -0.85 C |
| 1996 | 9.2 C | -1.73 C |
| 1997 | 9.5 C | -1.42 C |
| 1998 | 12.2 C | +1.35 C |
| 1999 | 10.7 C | -0.14 C |
| 2000 | 10.2 C | -0.67 C |
| 2001 | 11.0 C | +0.10 C |
| 2002 | 10.8 C | -0.08 C |
| 2003 | 10.0 C | -0.87 C |
| 2004 | 10.6 C | -0.31 C |
| 2005 | 11.3 C | +0.38 C |
| 2006 | 11.4 C | +0.56 C |
| 2007 | 11.1 C | +0.17 C |
| 2008 | 9.6 C | -1.25 C |
| 2009 | 9.9 C | -1.02 C |
| 2010 | 10.7 C | -0.18 C |
| 2011 | 11.0 C | +0.10 C |
| 2012 | 12.5 C | +1.64 C |
| 2013 | 9.9 C | -0.95 C |
| 2014 | 9.1 C | -1.79 C |
| 2015 | 11.0 C | +0.11 C |
| 2016 | 12.3 C | +1.42 C |
The annual mean temperature here has fallen by 0.08 C (0.03 to 0.13) per decade over 1903 to 2016. In Fahrenheit: 0.14 F (0.05 to 0.23) per decade. The slope is a straight line fitted to 110 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.08 C (-0.13 to -0.03) per decade | -0.14 F (-0.23 to -0.05) per decade | 1903 to 2016 | 110 | Fall |
| Mean daily maximum | -0.1 C (-0.2 to -0.1) per decade | -0.2 F (-0.3 to -0.1) per decade | 1903 to 2016 | 110 | Fall |
| Mean daily minimum | -0.03 C (-0.08 to 0.02) per decade | -0.05 F (-0.15 to 0.04) per decade | 1903 to 2016 | 110 | Not clearly different from zero |
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
1903 to 2017| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 42.2 C (108.0 F) | 1936 | 36.1 C (97.0 F) | 115 |
| Coldest night (TNn) | -31.1 C (-24.0 F) | 1927 | -23.3 C (-9.9 F) | 115 |
| Wettest day (Rx1day) | 144.0 mm (5.7 in) | 1973 | 59.2 mm (2.3 in) | 115 |
| Wettest five days (Rx5day) | 193.3 mm (7.6 in) | 1941 | 89.1 mm (3.5 in) | 115 |
| Longest dry spell (CDD) | 39 days | 1979 | 21 days | 115 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1903 | 35.0 C (95.0 F) |
| 1904 | 33.3 C (91.9 F) |
| 1905 | 35.0 C (95.0 F) |
| 1906 | 35.6 C (96.1 F) |
| 1907 | 34.4 C (93.9 F) |
| 1908 | 37.2 C (99.0 F) |
| 1909 | 35.6 C (96.1 F) |
| 1910 | 37.8 C (100.0 F) |
| 1911 | 41.1 C (106.0 F) |
| 1912 | 36.7 C (98.1 F) |
| 1913 | 41.1 C (106.0 F) |
| 1914 | 39.4 C (102.9 F) |
| 1915 | 33.9 C (93.0 F) |
| 1916 | 41.1 C (106.0 F) |
| 1917 | 37.2 C (99.0 F) |
| 1918 | 40.0 C (104.0 F) |
| 1919 | 37.2 C (99.0 F) |
| 1920 | 37.8 C (100.0 F) |
| 1921 | 39.4 C (102.9 F) |
| 1922 | 37.8 C (100.0 F) |
| 1923 | 39.4 C (102.9 F) |
| 1924 | 36.7 C (98.1 F) |
| 1925 | 39.4 C (102.9 F) |
| 1926 | 37.2 C (99.0 F) |
| 1927 | 36.7 C (98.1 F) |
| 1928 | 36.1 C (97.0 F) |
| 1929 | 35.6 C (96.1 F) |
| 1930 | 41.1 C (106.0 F) |
| 1931 | 40.0 C (104.0 F) |
| 1932 | 38.9 C (102.0 F) |
| 1933 | 38.9 C (102.0 F) |
| 1934 | 41.7 C (107.1 F) |
| 1935 | 35.6 C (96.1 F) |
| 1936 | 42.2 C (108.0 F) |
| 1937 | 36.7 C (98.1 F) |
| 1938 | 35.6 C (96.1 F) |
| 1939 | 38.3 C (100.9 F) |
| 1940 | 38.9 C (102.0 F) |
| 1941 | 37.8 C (100.0 F) |
| 1942 | 35.6 C (96.1 F) |
| 1943 | 35.0 C (95.0 F) |
| 1944 | 35.6 C (96.1 F) |
| 1945 | 35.6 C (96.1 F) |
| 1946 | 35.0 C (95.0 F) |
| 1947 | 36.7 C (98.1 F) |
| 1948 | 35.0 C (95.0 F) |
| 1949 | 35.0 C (95.0 F) |
| 1950 | 32.2 C (90.0 F) |
| 1951 | 32.8 C (91.0 F) |
| 1952 | 35.6 C (96.1 F) |
| 1953 | 37.8 C (100.0 F) |
| 1954 | 37.8 C (100.0 F) |
| 1955 | 35.0 C (95.0 F) |
| 1956 | 36.1 C (97.0 F) |
| 1957 | 34.4 C (93.9 F) |
| 1958 | 33.3 C (91.9 F) |
| 1959 | 33.3 C (91.9 F) |
| 1960 | 34.4 C (93.9 F) |
| 1961 | 35.0 C (95.0 F) |
| 1962 | 35.6 C (96.1 F) |
| 1963 | 36.7 C (98.1 F) |
| 1964 | 37.2 C (99.0 F) |
| 1965 | 36.1 C (97.0 F) |
| 1966 | 38.3 C (100.9 F) |
| 1967 | 35.6 C (96.1 F) |
| 1968 | 36.1 C (97.0 F) |
| 1969 | 35.0 C (95.0 F) |
| 1970 | 37.8 C (100.0 F) |
| 1971 | 37.2 C (99.0 F) |
| 1972 | 36.1 C (97.0 F) |
| 1973 | 35.6 C (96.1 F) |
| 1974 | 37.2 C (99.0 F) |
| 1975 | 34.4 C (93.9 F) |
| 1976 | 35.0 C (95.0 F) |
| 1977 | 36.7 C (98.1 F) |
| 1978 | 35.6 C (96.1 F) |
| 1979 | 34.4 C (93.9 F) |
| 1980 | 37.2 C (99.0 F) |
| 1981 | 35.0 C (95.0 F) |
| 1982 | 33.9 C (93.0 F) |
| 1983 | 38.3 C (100.9 F) |
| 1984 | 36.7 C (98.1 F) |
| 1985 | 33.9 C (93.0 F) |
| 1986 | 36.7 C (98.1 F) |
| 1987 | 36.7 C (98.1 F) |
| 1988 | 40.0 C (104.0 F) |
| 1989 | 36.1 C (97.0 F) |
| 1990 | 35.6 C (96.1 F) |
| 1991 | 36.7 C (98.1 F) |
| 1992 | 33.3 C (91.9 F) |
| 1993 | 33.9 C (93.0 F) |
| 1994 | 36.1 C (97.0 F) |
| 1995 | 38.3 C (100.9 F) |
| 1996 | 34.4 C (93.9 F) |
| 1997 | 36.7 C (98.1 F) |
| 1998 | 35.0 C (95.0 F) |
| 1999 | 36.7 C (98.1 F) |
| 2000 | 36.1 C (97.0 F) |
| 2001 | 37.2 C (99.0 F) |
| 2002 | 35.0 C (95.0 F) |
| 2003 | 36.7 C (98.1 F) |
| 2004 | 32.8 C (91.0 F) |
| 2005 | 36.7 C (98.1 F) |
| 2006 | 35.0 C (95.0 F) |
| 2007 | 33.9 C (93.0 F) |
| 2008 | 33.3 C (91.9 F) |
| 2009 | 33.3 C (91.9 F) |
| 2010 | 35.6 C (96.1 F) |
| 2011 | 36.7 C (98.1 F) |
| 2012 | 37.8 C (100.0 F) |
| 2013 | 36.1 C (97.0 F) |
| 2014 | 35.6 C (96.1 F) |
| 2015 | 33.9 C (93.0 F) |
| 2016 | 34.4 C (93.9 F) |
| 2017 | 31.7 C (89.1 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1903 | -25.6 C (-14.1 F) |
| 1904 | -25.0 C (-13.0 F) |
| 1905 | -30.6 C (-23.1 F) |
| 1906 | -16.1 C (3.0 F) |
| 1907 | -20.6 C (-5.1 F) |
| 1908 | -18.3 C (-0.9 F) |
| 1909 | -25.0 C (-13.0 F) |
| 1910 | -22.8 C (-9.0 F) |
| 1911 | -20.6 C (-5.1 F) |
| 1912 | -26.7 C (-16.1 F) |
| 1913 | -20.6 C (-5.1 F) |
| 1914 | -28.3 C (-18.9 F) |
| 1915 | -28.3 C (-18.9 F) |
| 1916 | -26.1 C (-15.0 F) |
| 1917 | -26.1 C (-15.0 F) |
| 1918 | -28.9 C (-20.0 F) |
| 1919 | -23.9 C (-11.0 F) |
| 1920 | -26.1 C (-15.0 F) |
| 1921 | -15.0 C (5.0 F) |
| 1922 | -22.2 C (-8.0 F) |
| 1923 | -21.7 C (-7.1 F) |
| 1924 | -30.6 C (-23.1 F) |
| 1925 | -21.1 C (-6.0 F) |
| 1926 | -21.1 C (-6.0 F) |
| 1927 | -31.1 C (-24.0 F) |
| 1928 | -25.6 C (-14.1 F) |
| 1929 | -25.0 C (-13.0 F) |
| 1930 | -27.8 C (-18.0 F) |
| 1931 | -15.6 C (3.9 F) |
| 1932 | -25.6 C (-14.1 F) |
| 1933 | -28.9 C (-20.0 F) |
| 1934 | -22.8 C (-9.0 F) |
| 1935 | -21.7 C (-7.1 F) |
| 1936 | -28.3 C (-18.9 F) |
| 1937 | -19.4 C (-2.9 F) |
| 1938 | -17.2 C (1.0 F) |
| 1939 | -18.9 C (-2.0 F) |
| 1940 | -24.4 C (-11.9 F) |
| 1941 | -18.9 C (-2.0 F) |
| 1942 | -22.8 C (-9.0 F) |
| 1943 | -25.6 C (-14.1 F) |
| 1944 | -23.3 C (-9.9 F) |
| 1945 | -21.7 C (-7.1 F) |
| 1946 | -18.3 C (-0.9 F) |
| 1947 | -17.8 C (0.0 F) |
| 1948 | -20.6 C (-5.1 F) |
| 1949 | -19.4 C (-2.9 F) |
| 1950 | -22.8 C (-9.0 F) |
| 1951 | -25.6 C (-14.1 F) |
| 1952 | -18.3 C (-0.9 F) |
| 1953 | -19.4 C (-2.9 F) |
| 1954 | -20.6 C (-5.1 F) |
| 1955 | -23.9 C (-11.0 F) |
| 1956 | -17.2 C (1.0 F) |
| 1957 | -24.4 C (-11.9 F) |
| 1958 | -25.6 C (-14.1 F) |
| 1959 | -23.3 C (-9.9 F) |
| 1960 | -25.0 C (-13.0 F) |
| 1961 | -22.2 C (-8.0 F) |
| 1962 | -23.9 C (-11.0 F) |
| 1963 | -30.0 C (-22.0 F) |
| 1964 | -20.0 C (-4.0 F) |
| 1965 | -22.8 C (-9.0 F) |
| 1966 | -26.1 C (-15.0 F) |
| 1967 | -22.8 C (-9.0 F) |
| 1968 | -26.1 C (-15.0 F) |
| 1969 | -21.7 C (-7.1 F) |
| 1970 | -26.1 C (-15.0 F) |
| 1971 | -20.0 C (-4.0 F) |
| 1972 | -26.1 C (-15.0 F) |
| 1973 | -23.3 C (-9.9 F) |
| 1974 | -26.1 C (-15.0 F) |
| 1975 | -23.9 C (-11.0 F) |
| 1976 | -24.4 C (-11.9 F) |
| 1977 | -28.9 C (-20.0 F) |
| 1978 | -22.2 C (-8.0 F) |
| 1979 | -27.8 C (-18.0 F) |
| 1980 | -21.7 C (-7.1 F) |
| 1981 | -23.9 C (-11.0 F) |
| 1982 | -29.4 C (-20.9 F) |
| 1983 | -28.3 C (-18.9 F) |
| 1984 | -28.3 C (-18.9 F) |
| 1985 | -30.6 C (-23.1 F) |
| 1986 | -22.8 C (-9.0 F) |
| 1987 | -23.3 C (-9.9 F) |
| 1988 | -23.3 C (-9.9 F) |
| 1989 | -28.9 C (-20.0 F) |
| 1990 | -19.4 C (-2.9 F) |
| 1991 | -19.4 C (-2.9 F) |
| 1992 | -21.1 C (-6.0 F) |
| 1993 | -20.6 C (-5.1 F) |
| 1994 | -27.8 C (-18.0 F) |
| 1995 | -20.6 C (-5.1 F) |
| 1996 | -27.8 C (-18.0 F) |
| 1997 | -23.3 C (-9.9 F) |
| 1998 | -18.9 C (-2.0 F) |
| 1999 | -30.0 C (-22.0 F) |
| 2000 | -24.4 C (-11.9 F) |
| 2001 | -20.0 C (-4.0 F) |
| 2002 | -20.6 C (-5.1 F) |
| 2003 | -22.8 C (-9.0 F) |
| 2004 | -23.3 C (-9.9 F) |
| 2005 | -20.6 C (-5.1 F) |
| 2006 | -20.0 C (-4.0 F) |
| 2007 | -22.8 C (-9.0 F) |
| 2008 | -23.3 C (-9.9 F) |
| 2009 | -28.9 C (-20.0 F) |
| 2010 | -23.3 C (-9.9 F) |
| 2011 | -22.2 C (-8.0 F) |
| 2012 | -16.7 C (1.9 F) |
| 2013 | -20.6 C (-5.1 F) |
| 2014 | -24.4 C (-11.9 F) |
| 2015 | -22.8 C (-9.0 F) |
| 2016 | -20.6 C (-5.1 F) |
| 2017 | -18.3 C (-0.9 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1903 | 67.6 mm (2.7 in) |
| 1904 | 58.4 mm (2.3 in) |
| 1905 | 69.9 mm (2.8 in) |
| 1906 | 46.5 mm (1.8 in) |
| 1907 | 47.0 mm (1.9 in) |
| 1908 | 41.1 mm (1.6 in) |
| 1909 | 49.5 mm (1.9 in) |
| 1910 | 59.2 mm (2.3 in) |
| 1911 | 100.3 mm (3.9 in) |
| 1912 | 40.1 mm (1.6 in) |
| 1913 | 65.5 mm (2.6 in) |
| 1914 | 58.4 mm (2.3 in) |
| 1915 | 96.5 mm (3.8 in) |
| 1916 | 66.0 mm (2.6 in) |
| 1917 | 64.8 mm (2.6 in) |
| 1918 | 61.5 mm (2.4 in) |
| 1919 | 46.2 mm (1.8 in) |
| 1920 | 45.7 mm (1.8 in) |
| 1921 | 81.5 mm (3.2 in) |
| 1922 | 44.5 mm (1.8 in) |
| 1923 | 96.5 mm (3.8 in) |
| 1924 | 41.9 mm (1.6 in) |
| 1925 | 36.8 mm (1.4 in) |
| 1926 | 81.8 mm (3.2 in) |
| 1927 | 73.7 mm (2.9 in) |
| 1928 | 36.1 mm (1.4 in) |
| 1929 | 50.8 mm (2.0 in) |
| 1930 | 39.4 mm (1.6 in) |
| 1931 | 54.9 mm (2.2 in) |
| 1932 | 53.8 mm (2.1 in) |
| 1933 | 108.0 mm (4.3 in) |
| 1934 | 66.0 mm (2.6 in) |
| 1935 | 51.3 mm (2.0 in) |
| 1936 | 48.3 mm (1.9 in) |
| 1937 | 32.8 mm (1.3 in) |
| 1938 | 48.5 mm (1.9 in) |
| 1939 | 52.1 mm (2.1 in) |
| 1940 | 68.6 mm (2.7 in) |
| 1941 | 67.3 mm (2.6 in) |
| 1942 | 64.8 mm (2.6 in) |
| 1943 | 142.0 mm (5.6 in) |
| 1944 | 53.3 mm (2.1 in) |
| 1945 | 38.4 mm (1.5 in) |
| 1946 | 67.3 mm (2.6 in) |
| 1947 | 45.7 mm (1.8 in) |
| 1948 | 35.6 mm (1.4 in) |
| 1949 | 78.7 mm (3.1 in) |
| 1950 | 108.2 mm (4.3 in) |
| 1951 | 98.0 mm (3.9 in) |
| 1952 | 52.8 mm (2.1 in) |
| 1953 | 76.7 mm (3.0 in) |
| 1954 | 36.8 mm (1.4 in) |
| 1955 | 82.0 mm (3.2 in) |
| 1956 | 50.5 mm (2.0 in) |
| 1957 | 75.2 mm (3.0 in) |
| 1958 | 83.8 mm (3.3 in) |
| 1959 | 46.2 mm (1.8 in) |
| 1960 | 57.9 mm (2.3 in) |
| 1961 | 70.9 mm (2.8 in) |
| 1962 | 120.9 mm (4.8 in) |
| 1963 | 43.2 mm (1.7 in) |
| 1964 | 46.0 mm (1.8 in) |
| 1965 | 79.0 mm (3.1 in) |
| 1966 | 105.4 mm (4.1 in) |
| 1967 | 70.4 mm (2.8 in) |
| 1968 | 92.7 mm (3.6 in) |
| 1969 | 56.4 mm (2.2 in) |
| 1970 | 88.6 mm (3.5 in) |
| 1971 | 52.8 mm (2.1 in) |
| 1972 | 48.3 mm (1.9 in) |
| 1973 | 144.0 mm (5.7 in) |
| 1974 | 49.8 mm (2.0 in) |
| 1975 | 53.8 mm (2.1 in) |
| 1976 | 50.8 mm (2.0 in) |
| 1977 | 71.6 mm (2.8 in) |
| 1978 | 77.5 mm (3.1 in) |
| 1979 | 67.8 mm (2.7 in) |
| 1980 | 46.7 mm (1.8 in) |
| 1981 | 92.2 mm (3.6 in) |
| 1982 | 139.7 mm (5.5 in) |
| 1983 | 61.5 mm (2.4 in) |
| 1984 | 55.6 mm (2.2 in) |
| 1985 | 53.3 mm (2.1 in) |
| 1986 | 69.3 mm (2.7 in) |
| 1987 | 39.6 mm (1.6 in) |
| 1988 | 35.3 mm (1.4 in) |
| 1989 | 66.3 mm (2.6 in) |
| 1990 | 112.3 mm (4.4 in) |
| 1991 | 44.2 mm (1.7 in) |
| 1992 | 49.5 mm (1.9 in) |
| 1993 | 67.8 mm (2.7 in) |
| 1994 | 64.0 mm (2.5 in) |
| 1995 | 73.2 mm (2.9 in) |
| 1996 | 45.5 mm (1.8 in) |
| 1997 | 83.8 mm (3.3 in) |
| 1998 | 81.3 mm (3.2 in) |
| 1999 | 58.4 mm (2.3 in) |
| 2000 | 61.0 mm (2.4 in) |
| 2001 | 58.9 mm (2.3 in) |
| 2002 | 104.1 mm (4.1 in) |
| 2003 | 39.4 mm (1.6 in) |
| 2004 | 60.5 mm (2.4 in) |
| 2005 | 34.8 mm (1.4 in) |
| 2006 | 39.4 mm (1.6 in) |
| 2007 | 110.5 mm (4.4 in) |
| 2008 | 86.4 mm (3.4 in) |
| 2009 | 57.2 mm (2.3 in) |
| 2010 | 51.3 mm (2.0 in) |
| 2011 | 41.4 mm (1.6 in) |
| 2012 | 61.2 mm (2.4 in) |
| 2013 | 86.9 mm (3.4 in) |
| 2014 | 60.2 mm (2.4 in) |
| 2015 | 62.7 mm (2.5 in) |
| 2016 | 53.8 mm (2.1 in) |
| 2017 | 22.1 mm (0.9 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1903 | 102.7 mm (4.0 in) |
| 1904 | 79.8 mm (3.1 in) |
| 1905 | 102.2 mm (4.0 in) |
| 1906 | 59.2 mm (2.3 in) |
| 1907 | 73.7 mm (2.9 in) |
| 1908 | 65.1 mm (2.6 in) |
| 1909 | 57.7 mm (2.3 in) |
| 1910 | 89.1 mm (3.5 in) |
| 1911 | 133.8 mm (5.3 in) |
| 1912 | 75.3 mm (3.0 in) |
| 1913 | 98.3 mm (3.9 in) |
| 1914 | 76.2 mm (3.0 in) |
| 1915 | 139.2 mm (5.5 in) |
| 1916 | 66.0 mm (2.6 in) |
| 1917 | 86.1 mm (3.4 in) |
| 1918 | 81.3 mm (3.2 in) |
| 1919 | 69.8 mm (2.7 in) |
| 1920 | 122.0 mm (4.8 in) |
| 1921 | 90.9 mm (3.6 in) |
| 1922 | 60.4 mm (2.4 in) |
| 1923 | 120.9 mm (4.8 in) |
| 1924 | 87.6 mm (3.4 in) |
| 1925 | 51.0 mm (2.0 in) |
| 1926 | 119.8 mm (4.7 in) |
| 1927 | 168.8 mm (6.6 in) |
| 1928 | 55.4 mm (2.2 in) |
| 1929 | 78.0 mm (3.1 in) |
| 1930 | 85.1 mm (3.4 in) |
| 1931 | 63.8 mm (2.5 in) |
| 1932 | 71.6 mm (2.8 in) |
| 1933 | 154.7 mm (6.1 in) |
| 1934 | 96.2 mm (3.8 in) |
| 1935 | 100.8 mm (4.0 in) |
| 1936 | 91.2 mm (3.6 in) |
| 1937 | 48.0 mm (1.9 in) |
| 1938 | 68.3 mm (2.7 in) |
| 1939 | 76.8 mm (3.0 in) |
| 1940 | 69.9 mm (2.8 in) |
| 1941 | 193.3 mm (7.6 in) |
| 1942 | 101.1 mm (4.0 in) |
| 1943 | 168.7 mm (6.6 in) |
| 1944 | 108.4 mm (4.3 in) |
| 1945 | 77.0 mm (3.0 in) |
| 1946 | 95.0 mm (3.7 in) |
| 1947 | 85.6 mm (3.4 in) |
| 1948 | 61.8 mm (2.4 in) |
| 1949 | 98.6 mm (3.9 in) |
| 1950 | 137.9 mm (5.4 in) |
| 1951 | 129.3 mm (5.1 in) |
| 1952 | 67.9 mm (2.7 in) |
| 1953 | 133.7 mm (5.3 in) |
| 1954 | 74.7 mm (2.9 in) |
| 1955 | 82.0 mm (3.2 in) |
| 1956 | 66.3 mm (2.6 in) |
| 1957 | 123.0 mm (4.8 in) |
| 1958 | 155.9 mm (6.1 in) |
| 1959 | 82.6 mm (3.3 in) |
| 1960 | 72.2 mm (2.8 in) |
| 1961 | 149.9 mm (5.9 in) |
| 1962 | 160.3 mm (6.3 in) |
| 1963 | 53.4 mm (2.1 in) |
| 1964 | 74.2 mm (2.9 in) |
| 1965 | 100.6 mm (4.0 in) |
| 1966 | 115.1 mm (4.5 in) |
| 1967 | 81.6 mm (3.2 in) |
| 1968 | 169.4 mm (6.7 in) |
| 1969 | 104.2 mm (4.1 in) |
| 1970 | 111.9 mm (4.4 in) |
| 1971 | 63.2 mm (2.5 in) |
| 1972 | 66.6 mm (2.6 in) |
| 1973 | 191.0 mm (7.5 in) |
| 1974 | 87.0 mm (3.4 in) |
| 1975 | 66.0 mm (2.6 in) |
| 1976 | 85.1 mm (3.4 in) |
| 1977 | 97.2 mm (3.8 in) |
| 1978 | 120.7 mm (4.8 in) |
| 1979 | 99.5 mm (3.9 in) |
| 1980 | 141.5 mm (5.6 in) |
| 1981 | 98.9 mm (3.9 in) |
| 1982 | 58.4 mm (2.3 in) |
| 1983 | 129.6 mm (5.1 in) |
| 1984 | 103.1 mm (4.1 in) |
| 1985 | 87.4 mm (3.4 in) |
| 1986 | 124.2 mm (4.9 in) |
| 1987 | 56.7 mm (2.2 in) |
| 1988 | 58.4 mm (2.3 in) |
| 1989 | 102.9 mm (4.1 in) |
| 1990 | 125.3 mm (4.9 in) |
| 1991 | 79.5 mm (3.1 in) |
| 1992 | 89.1 mm (3.5 in) |
| 1993 | 81.2 mm (3.2 in) |
| 1994 | 131.8 mm (5.2 in) |
| 1995 | 102.1 mm (4.0 in) |
| 1996 | 103.0 mm (4.1 in) |
| 1997 | 91.4 mm (3.6 in) |
| 1998 | 135.7 mm (5.3 in) |
| 1999 | 119.7 mm (4.7 in) |
| 2000 | 74.8 mm (2.9 in) |
| 2001 | 89.9 mm (3.5 in) |
| 2002 | 104.1 mm (4.1 in) |
| 2003 | 81.0 mm (3.2 in) |
| 2004 | 77.7 mm (3.1 in) |
| 2005 | 58.9 mm (2.3 in) |
| 2006 | 73.4 mm (2.9 in) |
| 2007 | 147.3 mm (5.8 in) |
| 2008 | 154.1 mm (6.1 in) |
| 2009 | 87.7 mm (3.5 in) |
| 2010 | 62.8 mm (2.5 in) |
| 2011 | 74.5 mm (2.9 in) |
| 2012 | 88.8 mm (3.5 in) |
| 2013 | 176.0 mm (6.9 in) |
| 2014 | 124.0 mm (4.9 in) |
| 2015 | 103.4 mm (4.1 in) |
| 2016 | 73.9 mm (2.9 in) |
| 2017 | 50.5 mm (2.0 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1903 | 16 days |
| 1904 | 32 days |
| 1905 | 18 days |
| 1906 | 20 days |
| 1907 | 21 days |
| 1908 | 25 days |
| 1909 | 16 days |
| 1910 | 20 days |
| 1911 | 12 days |
| 1912 | 18 days |
| 1913 | 20 days |
| 1914 | 26 days |
| 1915 | 30 days |
| 1916 | 21 days |
| 1917 | 29 days |
| 1918 | 20 days |
| 1919 | 31 days |
| 1920 | 23 days |
| 1921 | 22 days |
| 1922 | 17 days |
| 1923 | 23 days |
| 1924 | 22 days |
| 1925 | 23 days |
| 1926 | 11 days |
| 1927 | 19 days |
| 1928 | 18 days |
| 1929 | 22 days |
| 1930 | 26 days |
| 1931 | 19 days |
| 1932 | 16 days |
| 1933 | 33 days |
| 1934 | 26 days |
| 1935 | 16 days |
| 1936 | 22 days |
| 1937 | 19 days |
| 1938 | 24 days |
| 1939 | 34 days |
| 1940 | 22 days |
| 1941 | 28 days |
| 1942 | 28 days |
| 1943 | 27 days |
| 1944 | 30 days |
| 1945 | 17 days |
| 1946 | 23 days |
| 1947 | 25 days |
| 1948 | 27 days |
| 1949 | 20 days |
| 1950 | 19 days |
| 1951 | 28 days |
| 1952 | 32 days |
| 1953 | 24 days |
| 1954 | 22 days |
| 1955 | 27 days |
| 1956 | 32 days |
| 1957 | 24 days |
| 1958 | 22 days |
| 1959 | 17 days |
| 1960 | 25 days |
| 1961 | 27 days |
| 1962 | 22 days |
| 1963 | 19 days |
| 1964 | 26 days |
| 1965 | 20 days |
| 1966 | 26 days |
| 1967 | 18 days |
| 1968 | 23 days |
| 1969 | 27 days |
| 1970 | 17 days |
| 1971 | 31 days |
| 1972 | 12 days |
| 1973 | 19 days |
| 1974 | 22 days |
| 1975 | 14 days |
| 1976 | 27 days |
| 1977 | 16 days |
| 1978 | 19 days |
| 1979 | 39 days |
| 1980 | 16 days |
| 1981 | 25 days |
| 1982 | 17 days |
| 1983 | 27 days |
| 1984 | 11 days |
| 1985 | 17 days |
| 1986 | 21 days |
| 1987 | 29 days |
| 1988 | 17 days |
| 1989 | 24 days |
| 1990 | 12 days |
| 1991 | 19 days |
| 1992 | 20 days |
| 1993 | 20 days |
| 1994 | 19 days |
| 1995 | 27 days |
| 1996 | 20 days |
| 1997 | 14 days |
| 1998 | 18 days |
| 1999 | 36 days |
| 2000 | 14 days |
| 2001 | 21 days |
| 2002 | 20 days |
| 2003 | 16 days |
| 2004 | 20 days |
| 2005 | 21 days |
| 2006 | 15 days |
| 2007 | 21 days |
| 2008 | 17 days |
| 2009 | 16 days |
| 2010 | 21 days |
| 2011 | 21 days |
| 2012 | 24 days |
| 2013 | 14 days |
| 2014 | 16 days |
| 2015 | 31 days |
| 2016 | 13 days |
| 2017 | 11 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
110 years with a frostAcross 110 years with a frost, the median last spring frost at Pontiac falls on 21 April and the median first autumn frost on 18 October, which leaves a median of 180 days between them.
In 1987 to 2016 the median growing season was 184 days. That is 10 days more than in 1903 to 1932.
Fitted over all years, the growing season changes by +1.3 days per decade at this station.
| Measure | Median, all years | Earliest period (1903 to 1932) | Recent period (1987 to 2016) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 21 April | 27 April | 15 April | 12 days earlier | -1.2 days per decade |
| First autumn frost | 18 October | 18 October | 17 October | 1 day earlier | +0.1 days per decade |
| Growing days | 180 days | 174 days | 184 days | 10 days more | +1.3 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
110 years, 1903 to 2016A day with at least 59.6 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 145.9 mm (5.7 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 59.6 mm (2.3 in) | |
| 5 years | 79.8 mm (3.1 in) | |
| 10 years | 94.2 mm (3.7 in) | |
| 25 years | 113.9 mm (4.5 in) | |
| 50 years | 129.5 mm (5.1 in) | |
| 100 years | 145.9 mm (5.7 in) |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 110 years of values from 1903 to 2016.
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: 144.0 mm (5.7 in) in 1973; 142.0 mm (5.6 in) in 1943; 120.9 mm (4.8 in) in 1962.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Pontiac, at 1937. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 1937 ran 0.4 C (0.8 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 1937 | -0.4 | -0.8 | 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.
Climate Twins
2002 to 2016 against 1961 to 1990Over 2002 to 2016, Pontiac had a mean temperature of 10.7 C (51.3 F) and 944.1 mm (37.2 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Kentland (United States, 102 km away), Delphi 2 N (United States, 169 km away) and Jacksonville 2E (United States, 184 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Kentland | United States | 102 km (63 mi) | 10.6 C (51.0 F) | 943.9 mm (37.2 in) | 0.49 |
| Delphi 2 N | United States | 169 km (105 mi) | 10.8 C (51.4 F) | 943.4 mm (37.1 in) | 0.54 |
| Jacksonville 2E | United States | 184 km (114 mi) | 11.0 C (51.7 F) | 995.4 mm (39.2 in) | 0.56 |
Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.
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 (2025-12-31).