Chatham Weather Records (USC00441614)
Record envelope, standing records and threshold days for Chatham (USC00441614), Virginia, United States, with 105 years of record.
Key Facts for Chatham
- Chatham (USC00441614) is a weather station in Virginia, United States at 36.82 latitude and -79.41 longitude, 197 m (647 ft) above sea level.
- The station reports from 1922 to 2026, 105 years of record.
- 1,464 records set at Chatham still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Chatham set a daily record high maximum temperature of 35.6 C (96.1 F) on 14 September 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Virginia, United States, 36.82 latitude, -79.41 longitude.
- Elevation: 197 m (647 ft).
- Period of record: 1922 to 2026, 105 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
12 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 25.6 C (78.1 F) | -22.8 C (-9.0 F) | 21.1 C (70.0 F) | -13.9 C (7.0 F) |
| Feb | 27.8 C (82.0 F) | -21.7 C (-7.1 F) | 20.6 C (69.1 F) | -13.3 C (8.1 F) |
| Mar | 31.1 C (88.0 F) | -17.8 C (0.0 F) | 31.1 C (88.0 F) | -4.4 C (24.1 F) |
| Apr | 34.4 C (93.9 F) | -8.3 C (17.1 F) | 32.2 C (90.0 F) | -1.7 C (28.9 F) |
| May | 37.2 C (99.0 F) | -3.9 C (25.0 F) | 33.3 C (91.9 F) | -0.6 C (30.9 F) |
| Jun | 39.4 C (102.9 F) | 0.6 C (33.1 F) | 35.0 C (95.0 F) | 7.2 C (45.0 F) |
| Jul | 40.6 C (105.1 F) | 1.7 C (35.1 F) | 37.8 C (100.0 F) | 15.0 C (59.0 F) |
| Aug | 40.6 C (105.1 F) | 3.3 C (37.9 F) | 32.2 C (90.0 F) | 11.1 C (52.0 F) |
| Sep | 40.0 C (104.0 F) | -3.3 C (26.1 F) | 36.7 C (98.1 F) | 5.0 C (41.0 F) |
| Oct | 37.2 C (99.0 F) | -7.2 C (19.0 F) | 31.7 C (89.1 F) | 4.4 C (39.9 F) |
| Nov | 30.0 C (86.0 F) | -12.2 C (10.0 F) | n/a | n/a |
| Dec | 26.1 C (79.0 F) | -19.4 C (-2.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1922 | 7 |
| 1923 | 15 |
| 1924 | 16 |
| 1925 | 45 |
| 1926 | 22 |
| 1927 | 26 |
| 1928 | 17 |
| 1929 | 27 |
| 1930 | 35 |
| 1931 | 27 |
| 1932 | 30 |
| 1933 | 28 |
| 1934 | 15 |
| 1935 | 9 |
| 1936 | 22 |
| 1937 | 20 |
| 1938 | 13 |
| 1939 | 13 |
| 1940 | 14 |
| 1941 | 24 |
| 1942 | 19 |
| 1943 | 23 |
| 1944 | 9 |
| 1945 | 25 |
| 1946 | 12 |
| 1947 | 11 |
| 1948 | 11 |
| 1949 | 8 |
| 1950 | 19 |
| 1951 | 14 |
| 1952 | 13 |
| 1953 | 11 |
| 1954 | 18 |
| 1955 | 8 |
| 1956 | 10 |
| 1957 | 9 |
| 1958 | 9 |
| 1959 | 7 |
| 1960 | 12 |
| 1961 | 16 |
| 1962 | 9 |
| 1963 | 13 |
| 1964 | 15 |
| 1965 | 2 |
| 1966 | 13 |
| 1967 | 10 |
| 1968 | 6 |
| 1969 | 5 |
| 1970 | 11 |
| 1971 | 17 |
| 1972 | 9 |
| 1973 | 6 |
| 1974 | 7 |
| 1975 | 9 |
| 1976 | 32 |
| 1977 | 15 |
| 1978 | 16 |
| 1979 | 18 |
| 1980 | 12 |
| 1981 | 23 |
| 1982 | 16 |
| 1983 | 27 |
| 1984 | 29 |
| 1985 | 26 |
| 1986 | 14 |
| 1987 | 9 |
| 1988 | 29 |
| 1989 | 19 |
| 1990 | 8 |
| 1991 | 19 |
| 1992 | 20 |
| 1993 | 12 |
| 1994 | 10 |
| 1995 | 3 |
| 1996 | 11 |
| 1997 | 15 |
| 1998 | 6 |
| 1999 | 12 |
| 2000 | 10 |
| 2001 | 13 |
| 2002 | 19 |
| 2003 | 6 |
| 2004 | 5 |
| 2005 | 7 |
| 2006 | 6 |
| 2007 | 9 |
| 2008 | 5 |
| 2009 | 8 |
| 2010 | 12 |
| 2011 | 5 |
| 2012 | 3 |
| 2013 | 10 |
| 2014 | 11 |
| 2015 | 14 |
| 2016 | 9 |
| 2017 | 11 |
| 2018 | 22 |
| 2019 | 12 |
| 2020 | 6 |
| 2021 | 4 |
| 2022 | 9 |
| 2023 | 7 |
| 2024 | 2 |
| 2025 | 9 |
| 2026 | 8 |
All-Time Record Progression
4 new records| Date | Kind | Detail |
|---|---|---|
| 1958-02-18 | Record low maximum temperature | Record low maximum temperature -10.6 C (12.9 F) |
| 1982-01-11 | Record low maximum temperature | Record low maximum temperature -11.7 C (10.9 F) |
| 1985-01-21 | Record low minimum temperature | Record low minimum temperature -22.8 C (-9.0 F) |
| 1996-09-04 | Record daily precipitation | Record daily precipitation 221.7 mm (8.7 in) |
Wettest Day of Each Month
Sep: 221.7 mm (8.7 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 81.5 mm (3.2 in) | 4 January 1992 |
| Feb | 100.3 mm (3.9 in) | 7 February 2020 |
| Mar | 90.9 mm (3.6 in) | 30 March 1975 |
| Apr | 119.9 mm (4.7 in) | 16 April 1987 |
| May | 112.8 mm (4.4 in) | 13 May 1971 |
| Jun | 95.3 mm (3.8 in) | 22 June 1931 |
| Jul | 94.0 mm (3.7 in) | 2 July 2021 |
| Aug | 164.3 mm (6.5 in) | 31 August 1964 |
| Sep | 221.7 mm (8.7 in) | 4 September 1996 |
| Oct | 152.4 mm (6.0 in) | 3 October 1927 |
| Nov | 90.7 mm (3.6 in) | 27 November 2013 |
| Dec | 112.8 mm (4.4 in) | 29 December 1958 |
Period of Record Coverage
1922 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1922 | 95 | 26% | No |
| 1923 | 242 | 66% | No |
| 1924 | 366 | 100% | Yes |
| 1925 | 335 | 92% | Yes |
| 1926 | 303 | 83% | No |
| 1927 | 360 | 99% | Yes |
| 1928 | 328 | 90% | No |
| 1929 | 324 | 89% | No |
| 1930 | 364 | 100% | Yes |
| 1931 | 365 | 100% | Yes |
| 1932 | 365 | 100% | Yes |
| 1933 | 363 | 99% | Yes |
| 1934 | 364 | 100% | Yes |
| 1935 | 364 | 100% | Yes |
| 1936 | 365 | 100% | Yes |
| 1937 | 365 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 363 | 99% | Yes |
| 1940 | 364 | 99% | Yes |
| 1941 | 352 | 96% | Yes |
| 1942 | 352 | 96% | Yes |
| 1943 | 365 | 100% | Yes |
| 1944 | 364 | 99% | Yes |
| 1945 | 330 | 90% | Yes |
| 1946 | 361 | 99% | Yes |
| 1947 | 361 | 99% | Yes |
| 1948 | 351 | 96% | Yes |
| 1949 | 360 | 99% | Yes |
| 1950 | 363 | 99% | Yes |
| 1951 | 364 | 100% | Yes |
| 1952 | 365 | 100% | Yes |
| 1953 | 364 | 100% | Yes |
| 1954 | 362 | 99% | Yes |
| 1955 | 365 | 100% | Yes |
| 1956 | 366 | 100% | Yes |
| 1957 | 365 | 100% | Yes |
| 1958 | 365 | 100% | Yes |
| 1959 | 364 | 100% | Yes |
| 1960 | 366 | 100% | 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 | 366 | 100% | Yes |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 335 | 92% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 365 | 100% | Yes |
| 1974 | 335 | 92% | Yes |
| 1975 | 343 | 94% | Yes |
| 1976 | 354 | 97% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 363 | 99% | Yes |
| 1979 | 365 | 100% | Yes |
| 1980 | 344 | 94% | Yes |
| 1981 | 363 | 99% | Yes |
| 1982 | 365 | 100% | Yes |
| 1983 | 364 | 100% | Yes |
| 1984 | 365 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 364 | 100% | Yes |
| 1987 | 364 | 100% | Yes |
| 1988 | 365 | 100% | Yes |
| 1989 | 333 | 91% | Yes |
| 1990 | 362 | 99% | Yes |
| 1991 | 365 | 100% | Yes |
| 1992 | 365 | 100% | Yes |
| 1993 | 365 | 100% | Yes |
| 1994 | 365 | 100% | Yes |
| 1995 | 364 | 100% | Yes |
| 1996 | 356 | 97% | Yes |
| 1997 | 364 | 100% | Yes |
| 1998 | 365 | 100% | Yes |
| 1999 | 365 | 100% | Yes |
| 2000 | 366 | 100% | Yes |
| 2001 | 364 | 100% | Yes |
| 2002 | 361 | 99% | Yes |
| 2003 | 364 | 100% | Yes |
| 2004 | 366 | 100% | Yes |
| 2005 | 363 | 99% | Yes |
| 2006 | 364 | 100% | Yes |
| 2007 | 365 | 100% | Yes |
| 2008 | 363 | 99% | Yes |
| 2009 | 365 | 100% | Yes |
| 2010 | 365 | 100% | Yes |
| 2011 | 365 | 100% | Yes |
| 2012 | 366 | 100% | Yes |
| 2013 | 358 | 98% | Yes |
| 2014 | 359 | 98% | Yes |
| 2015 | 365 | 100% | Yes |
| 2016 | 365 | 100% | Yes |
| 2017 | 363 | 99% | Yes |
| 2018 | 364 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 365 | 100% | Yes |
| 2021 | 365 | 100% | Yes |
| 2022 | 364 | 100% | Yes |
| 2023 | 361 | 99% | Yes |
| 2024 | 363 | 99% | Yes |
| 2025 | 364 | 100% | Yes |
| 2026 | 279 | 76% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 14 September 2026 | Chatham, US | daily high max (Provisional) | 35.6 C (96.1 F) | 1.2 C (2.2 F) | 100 years | 42 of 100 (Notable) |
| 13 September 2026 | Chatham, US | daily high min (Provisional) | 22.2 C (72.0 F) | 1.6 C (2.9 F) | 100 years | 43 of 100 (Notable) |
| 5 September 2026 | Chatham, US | daily high max (Provisional) | 36.7 C (98.1 F) | 0.6 C (1.1 F) | 45 years | 24 of 100 (Routine) |
| 23 July 2026 | Chatham, US | daily rain | 62.5 mm (2.5 in) | 19.3 mm (0.8 in) | 5 years | 26 of 100 (Routine) |
| 9 July 2026 | Chatham, US | daily high min (Tie) | 22.2 C (72.0 F) | tie | 100 years | 10 of 100 (Routine) |
| 5 July 2026 | Chatham, US | daily high max (Tie) | 37.8 C (100.0 F) | tie | 100 years | 10 of 100 (Routine) |
| 15 June 2026 | Chatham, US | daily high max | 35.0 C (95.0 F) | 0.6 C (1.1 F) | 100 years | 41 of 100 (Notable) |
| 24 May 2026 | Chatham, US | daily low max | 14.4 C (57.9 F) | 1.2 C (2.2 F) | 23 years | 18 of 100 (Routine) |
| 16 April 2026 | Chatham, US | daily high max | 32.2 C (90.0 F) | 0.5 C (0.9 F) | 20 years | 16 of 100 (Routine) |
| 2 April 2026 | Chatham, US | daily high max (Tie) | 30.0 C (86.0 F) | tie | 48 years | 6 of 100 (Routine) |
| 28 March 2026 | Chatham, US | daily high max (Tie) | 29.4 C (84.9 F) | tie | 76 years | 8 of 100 (Routine) |
| 23 March 2026 | Chatham, US | monthly high max (Tie) | 31.1 C (88.0 F) | tie | 81 years | 11 of 100 (Routine) |
| 12 March 2026 | Chatham, US | monthly high max (Tie) | 31.1 C (88.0 F) | tie | 80 years | 11 of 100 (Routine) |
| 11 March 2026 | Chatham, US | daily high max | 28.3 C (82.9 F) | 2.2 C (4.0 F) | 100 years | 43 of 100 (Notable) |
| 8 March 2026 | Chatham, US | daily high min (Tie) | 10.6 C (51.1 F) | tie | 99 years | 9 of 100 (Routine) |
| 7 March 2026 | Chatham, US | daily high max | 28.9 C (84.0 F) | 2.2 C (4.0 F) | 69 years | 33 of 100 (Routine) |
| 5 February 2026 | Chatham, US | daily snowfall | 1.0 cm (0.4 in) | 0.7 cm (0.3 in) | 88 years | 20 of 100 (Routine) |
| 1 February 2026 | Chatham, US | daily low max | -6.7 C (19.9 F) | 3.4 C (6.1 F) | 60 years | 33 of 100 (Routine) |
| 8 January 2026 | Chatham, US | daily high max (Tie) | 21.1 C (70.0 F) | tie | 44 years | 5 of 100 (Routine) |
| 25 December 2025 | Chatham, US | daily high max | 20.6 C (69.1 F) | 1.2 C (2.2 F) | 68 years | 32 of 100 (Routine) |
Climate Trend
90 complete years, 1924 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1924 | 13.8 C | +0.38 C |
| 1927 | 14.6 C | +1.16 C |
| 1930 | 14.8 C | +1.35 C |
| 1931 | 15.3 C | +1.85 C |
| 1932 | 14.6 C | +1.23 C |
| 1933 | 15.1 C | +1.72 C |
| 1934 | 14.2 C | +0.83 C |
| 1935 | 14.0 C | +0.59 C |
| 1936 | 14.1 C | +0.68 C |
| 1937 | 13.9 C | +0.51 C |
| 1938 | 14.8 C | +1.42 C |
| 1939 | 14.8 C | +1.35 C |
| 1940 | 13.2 C | -0.24 C |
| 1941 | 14.2 C | +0.84 C |
| 1942 | 14.2 C | +0.79 C |
| 1943 | 14.7 C | +1.33 C |
| 1944 | 14.4 C | +1.00 C |
| 1945 | 14.8 C | +1.43 C |
| 1946 | 15.1 C | +1.71 C |
| 1947 | 13.7 C | +0.26 C |
| 1948 | 13.9 C | +0.52 C |
| 1949 | 14.9 C | +1.54 C |
| 1950 | 14.0 C | +0.62 C |
| 1951 | 13.9 C | +0.53 C |
| 1952 | 14.2 C | +0.79 C |
| 1953 | 14.8 C | +1.36 C |
| 1954 | 14.4 C | +0.97 C |
| 1955 | 13.9 C | +0.52 C |
| 1956 | 14.0 C | +0.58 C |
| 1957 | 13.9 C | +0.50 C |
| 1958 | 12.9 C | -0.47 C |
| 1959 | 14.2 C | +0.80 C |
| 1960 | 13.4 C | -0.04 C |
| 1961 | 13.7 C | +0.26 C |
| 1962 | 13.3 C | -0.13 C |
| 1963 | 13.2 C | -0.22 C |
| 1964 | 13.8 C | +0.36 C |
| 1965 | 13.8 C | +0.44 C |
| 1966 | 13.1 C | -0.30 C |
| 1967 | 13.0 C | -0.37 C |
| 1968 | 13.3 C | -0.13 C |
| 1969 | 13.0 C | -0.37 C |
| 1970 | 13.8 C | +0.37 C |
| 1972 | 13.3 C | -0.15 C |
| 1973 | 14.0 C | +0.63 C |
| 1979 | 11.8 C | -1.62 C |
| 1981 | 11.4 C | -2.03 C |
| 1982 | 12.2 C | -1.25 C |
| 1983 | 12.1 C | -1.35 C |
| 1984 | 12.3 C | -1.08 C |
| 1985 | 12.6 C | -0.83 C |
| 1986 | 12.8 C | -0.62 C |
| 1987 | 12.4 C | -1.03 C |
| 1988 | 11.4 C | -2.04 C |
| 1990 | 13.7 C | +0.25 C |
| 1991 | 13.5 C | +0.08 C |
| 1992 | 11.9 C | -1.48 C |
| 1993 | 12.3 C | -1.07 C |
| 1994 | 12.6 C | -0.80 C |
| 1995 | 12.5 C | -0.90 C |
| 1996 | 12.0 C | -1.40 C |
| 1997 | 12.0 C | -1.43 C |
| 1998 | 13.7 C | +0.25 C |
| 1999 | 13.0 C | -0.45 C |
| 2000 | 12.3 C | -1.14 C |
| 2001 | 12.7 C | -0.72 C |
| 2002 | 13.0 C | -0.43 C |
| 2003 | 12.4 C | -0.97 C |
| 2004 | 12.9 C | -0.49 C |
| 2005 | 12.8 C | -0.56 C |
| 2006 | 13.2 C | -0.22 C |
| 2007 | 13.5 C | +0.09 C |
| 2008 | 12.7 C | -0.69 C |
| 2009 | 12.4 C | -0.98 C |
| 2010 | 12.8 C | -0.64 C |
| 2011 | 13.4 C | +0.03 C |
| 2012 | 13.4 C | +0.04 C |
| 2013 | 12.0 C | -1.40 C |
| 2014 | 11.7 C | -1.73 C |
| 2015 | 12.9 C | -0.51 C |
| 2016 | 13.4 C | -0.01 C |
| 2017 | 13.8 C | +0.37 C |
| 2018 | 13.4 C | +0.01 C |
| 2019 | 13.9 C | +0.54 C |
| 2020 | 13.6 C | +0.21 C |
| 2021 | 13.1 C | -0.30 C |
| 2022 | 12.8 C | -0.65 C |
| 2023 | 13.2 C | -0.19 C |
| 2024 | 14.0 C | +0.63 C |
| 2025 | 13.5 C | +0.14 C |
The annual mean temperature here has fallen by 0.2 C (0.1 to 0.2) per decade over 1924 to 2025. In Fahrenheit: 0.3 F (0.3 to 0.4) per decade. The slope is a straight line fitted to 90 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.2 C (-0.2 to -0.1) per decade | -0.3 F (-0.4 to -0.3) per decade | 1924 to 2025 | 90 | Fall |
| Mean daily maximum | -0.09 C (-0.14 to -0.04) per decade | -0.2 F (-0.3 to -0.1) per decade | 1924 to 2025 | 90 | Fall |
| Mean daily minimum | -0.3 C (-0.4 to -0.2) per decade | -0.5 F (-0.7 to -0.4) per decade | 1924 to 2025 | 90 | Fall |
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
1922 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 40.6 C (105.1 F) | 1926 | 36.7 C (98.1 F) | 105 |
| Coldest night (TNn) | -22.8 C (-9.0 F) | 1985 | -14.4 C (6.1 F) | 105 |
| Wettest day (Rx1day) | 221.7 mm (8.7 in) | 1996 | 68.1 mm (2.7 in) | 105 |
| Wettest five days (Rx5day) | 347.5 mm (13.7 in) | 1996 | 109.2 mm (4.3 in) | 101 |
| Longest dry spell (CDD) | 43 days | 2000 | 19 days | 103 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1922 | 37.2 C (99.0 F) |
| 1923 | 36.7 C (98.1 F) |
| 1924 | 37.8 C (100.0 F) |
| 1925 | 38.3 C (100.9 F) |
| 1926 | 40.6 C (105.1 F) |
| 1927 | 38.9 C (102.0 F) |
| 1928 | 37.8 C (100.0 F) |
| 1929 | 36.7 C (98.1 F) |
| 1930 | 40.6 C (105.1 F) |
| 1931 | 40.0 C (104.0 F) |
| 1932 | 40.0 C (104.0 F) |
| 1933 | 38.9 C (102.0 F) |
| 1934 | 39.4 C (102.9 F) |
| 1935 | 37.2 C (99.0 F) |
| 1936 | 40.0 C (104.0 F) |
| 1937 | 37.2 C (99.0 F) |
| 1938 | 36.7 C (98.1 F) |
| 1939 | 37.2 C (99.0 F) |
| 1940 | 37.8 C (100.0 F) |
| 1941 | 37.2 C (99.0 F) |
| 1942 | 38.9 C (102.0 F) |
| 1943 | 36.7 C (98.1 F) |
| 1944 | 35.6 C (96.1 F) |
| 1945 | 39.4 C (102.9 F) |
| 1946 | 35.0 C (95.0 F) |
| 1947 | 36.1 C (97.0 F) |
| 1948 | 38.9 C (102.0 F) |
| 1949 | 36.7 C (98.1 F) |
| 1950 | 35.0 C (95.0 F) |
| 1951 | 37.2 C (99.0 F) |
| 1952 | 40.0 C (104.0 F) |
| 1953 | 37.2 C (99.0 F) |
| 1954 | 40.0 C (104.0 F) |
| 1955 | 35.6 C (96.1 F) |
| 1956 | 36.7 C (98.1 F) |
| 1957 | 36.7 C (98.1 F) |
| 1958 | 36.1 C (97.0 F) |
| 1959 | 37.8 C (100.0 F) |
| 1960 | 36.1 C (97.0 F) |
| 1961 | 33.9 C (93.0 F) |
| 1962 | 35.6 C (96.1 F) |
| 1963 | 37.2 C (99.0 F) |
| 1964 | 36.7 C (98.1 F) |
| 1965 | 34.4 C (93.9 F) |
| 1966 | 37.8 C (100.0 F) |
| 1967 | 33.9 C (93.0 F) |
| 1968 | 37.2 C (99.0 F) |
| 1969 | 35.6 C (96.1 F) |
| 1970 | 36.1 C (97.0 F) |
| 1971 | 35.0 C (95.0 F) |
| 1972 | 36.7 C (98.1 F) |
| 1973 | 36.1 C (97.0 F) |
| 1974 | 35.0 C (95.0 F) |
| 1975 | 35.6 C (96.1 F) |
| 1976 | 36.1 C (97.0 F) |
| 1977 | 37.8 C (100.0 F) |
| 1978 | 36.1 C (97.0 F) |
| 1979 | 35.0 C (95.0 F) |
| 1980 | 37.8 C (100.0 F) |
| 1981 | 35.6 C (96.1 F) |
| 1982 | 37.2 C (99.0 F) |
| 1983 | 38.9 C (102.0 F) |
| 1984 | 35.6 C (96.1 F) |
| 1985 | 35.0 C (95.0 F) |
| 1986 | 37.2 C (99.0 F) |
| 1987 | 36.7 C (98.1 F) |
| 1988 | 37.2 C (99.0 F) |
| 1989 | 35.0 C (95.0 F) |
| 1990 | 36.7 C (98.1 F) |
| 1991 | 37.2 C (99.0 F) |
| 1992 | 36.1 C (97.0 F) |
| 1993 | 37.8 C (100.0 F) |
| 1994 | 33.9 C (93.0 F) |
| 1995 | 34.4 C (93.9 F) |
| 1996 | 33.3 C (91.9 F) |
| 1997 | 35.6 C (96.1 F) |
| 1998 | 35.6 C (96.1 F) |
| 1999 | 36.1 C (97.0 F) |
| 2000 | 33.9 C (93.0 F) |
| 2001 | 34.4 C (93.9 F) |
| 2002 | 36.7 C (98.1 F) |
| 2003 | 34.4 C (93.9 F) |
| 2004 | 32.8 C (91.0 F) |
| 2005 | 34.4 C (93.9 F) |
| 2006 | 35.6 C (96.1 F) |
| 2007 | 37.8 C (100.0 F) |
| 2008 | 34.4 C (93.9 F) |
| 2009 | 33.3 C (91.9 F) |
| 2010 | 36.7 C (98.1 F) |
| 2011 | 37.2 C (99.0 F) |
| 2012 | 36.1 C (97.0 F) |
| 2013 | 32.8 C (91.0 F) |
| 2014 | 33.9 C (93.0 F) |
| 2015 | 32.2 C (90.0 F) |
| 2016 | 33.3 C (91.9 F) |
| 2017 | 33.3 C (91.9 F) |
| 2018 | 35.0 C (95.0 F) |
| 2019 | 37.2 C (99.0 F) |
| 2020 | 34.4 C (93.9 F) |
| 2021 | 35.0 C (95.0 F) |
| 2022 | 33.9 C (93.0 F) |
| 2023 | 35.0 C (95.0 F) |
| 2024 | 35.0 C (95.0 F) |
| 2025 | 35.0 C (95.0 F) |
| 2026 | 37.8 C (100.0 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1922 | -5.6 C (21.9 F) |
| 1923 | -6.7 C (19.9 F) |
| 1924 | -13.3 C (8.1 F) |
| 1925 | -13.3 C (8.1 F) |
| 1926 | -12.8 C (9.0 F) |
| 1927 | -15.0 C (5.0 F) |
| 1928 | -8.9 C (16.0 F) |
| 1929 | -12.2 C (10.0 F) |
| 1930 | -13.3 C (8.1 F) |
| 1931 | -12.8 C (9.0 F) |
| 1932 | -9.4 C (15.1 F) |
| 1933 | -12.2 C (10.0 F) |
| 1934 | -17.8 C (0.0 F) |
| 1935 | -17.8 C (0.0 F) |
| 1936 | -17.8 C (0.0 F) |
| 1937 | -13.3 C (8.1 F) |
| 1938 | -12.2 C (10.0 F) |
| 1939 | -11.7 C (10.9 F) |
| 1940 | -20.0 C (-4.0 F) |
| 1941 | -11.7 C (10.9 F) |
| 1942 | -17.8 C (0.0 F) |
| 1943 | -15.0 C (5.0 F) |
| 1944 | -10.0 C (14.0 F) |
| 1945 | -12.2 C (10.0 F) |
| 1946 | -12.2 C (10.0 F) |
| 1947 | -12.8 C (9.0 F) |
| 1948 | -15.0 C (5.0 F) |
| 1949 | -10.6 C (12.9 F) |
| 1950 | -11.1 C (12.0 F) |
| 1951 | -14.4 C (6.1 F) |
| 1952 | -11.7 C (10.9 F) |
| 1953 | -10.0 C (14.0 F) |
| 1954 | -11.7 C (10.9 F) |
| 1955 | -13.9 C (7.0 F) |
| 1956 | -12.2 C (10.0 F) |
| 1957 | -13.9 C (7.0 F) |
| 1958 | -17.8 C (0.0 F) |
| 1959 | -16.1 C (3.0 F) |
| 1960 | -15.0 C (5.0 F) |
| 1961 | -12.8 C (9.0 F) |
| 1962 | -15.0 C (5.0 F) |
| 1963 | -16.7 C (1.9 F) |
| 1964 | -14.4 C (6.1 F) |
| 1965 | -15.6 C (3.9 F) |
| 1966 | -15.0 C (5.0 F) |
| 1967 | -15.0 C (5.0 F) |
| 1968 | -13.9 C (7.0 F) |
| 1969 | -13.3 C (8.1 F) |
| 1970 | -17.2 C (1.0 F) |
| 1971 | -13.3 C (8.1 F) |
| 1972 | -18.3 C (-0.9 F) |
| 1973 | -15.6 C (3.9 F) |
| 1974 | -9.4 C (15.1 F) |
| 1975 | -12.8 C (9.0 F) |
| 1976 | -17.8 C (0.0 F) |
| 1977 | -13.3 C (8.1 F) |
| 1978 | -14.4 C (6.1 F) |
| 1979 | -18.9 C (-2.0 F) |
| 1980 | -18.9 C (-2.0 F) |
| 1981 | -17.2 C (1.0 F) |
| 1982 | -18.9 C (-2.0 F) |
| 1983 | -19.4 C (-2.9 F) |
| 1984 | -18.3 C (-0.9 F) |
| 1985 | -22.8 C (-9.0 F) |
| 1986 | -15.6 C (3.9 F) |
| 1987 | -22.8 C (-9.0 F) |
| 1988 | -21.1 C (-6.0 F) |
| 1989 | -17.2 C (1.0 F) |
| 1990 | -13.3 C (8.1 F) |
| 1991 | -15.6 C (3.9 F) |
| 1992 | -12.2 C (10.0 F) |
| 1993 | -17.8 C (0.0 F) |
| 1994 | -19.4 C (-2.9 F) |
| 1995 | -16.1 C (3.0 F) |
| 1996 | -19.4 C (-2.9 F) |
| 1997 | -16.1 C (3.0 F) |
| 1998 | -12.8 C (9.0 F) |
| 1999 | -15.0 C (5.0 F) |
| 2000 | -17.8 C (0.0 F) |
| 2001 | -12.2 C (10.0 F) |
| 2002 | -13.3 C (8.1 F) |
| 2003 | -15.6 C (3.9 F) |
| 2004 | -16.1 C (3.0 F) |
| 2005 | -13.3 C (8.1 F) |
| 2006 | -11.7 C (10.9 F) |
| 2007 | -15.0 C (5.0 F) |
| 2008 | -14.4 C (6.1 F) |
| 2009 | -17.8 C (0.0 F) |
| 2010 | -17.2 C (1.0 F) |
| 2011 | -12.2 C (10.0 F) |
| 2012 | -10.0 C (14.0 F) |
| 2013 | -11.7 C (10.9 F) |
| 2014 | -21.7 C (-7.1 F) |
| 2015 | -21.7 C (-7.1 F) |
| 2016 | -13.3 C (8.1 F) |
| 2017 | -19.4 C (-2.9 F) |
| 2018 | -18.9 C (-2.0 F) |
| 2019 | -12.2 C (10.0 F) |
| 2020 | -11.1 C (12.0 F) |
| 2021 | -11.1 C (12.0 F) |
| 2022 | -17.8 C (0.0 F) |
| 2023 | -11.1 C (12.0 F) |
| 2024 | -11.7 C (10.9 F) |
| 2025 | -13.3 C (8.1 F) |
| 2026 | -13.9 C (7.0 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1922 | 61.0 mm (2.4 in) |
| 1923 | 76.2 mm (3.0 in) |
| 1924 | 61.0 mm (2.4 in) |
| 1925 | 71.1 mm (2.8 in) |
| 1926 | 44.5 mm (1.8 in) |
| 1927 | 152.4 mm (6.0 in) |
| 1928 | 81.3 mm (3.2 in) |
| 1929 | 71.1 mm (2.8 in) |
| 1930 | 41.1 mm (1.6 in) |
| 1931 | 95.3 mm (3.8 in) |
| 1932 | 86.9 mm (3.4 in) |
| 1933 | 46.7 mm (1.8 in) |
| 1934 | 61.0 mm (2.4 in) |
| 1935 | 48.3 mm (1.9 in) |
| 1936 | 55.9 mm (2.2 in) |
| 1937 | 61.0 mm (2.4 in) |
| 1938 | 50.8 mm (2.0 in) |
| 1939 | 76.2 mm (3.0 in) |
| 1940 | 120.7 mm (4.8 in) |
| 1941 | 47.5 mm (1.9 in) |
| 1942 | 68.1 mm (2.7 in) |
| 1943 | 47.0 mm (1.9 in) |
| 1944 | 214.6 mm (8.4 in) |
| 1945 | 58.2 mm (2.3 in) |
| 1946 | 69.1 mm (2.7 in) |
| 1947 | 111.5 mm (4.4 in) |
| 1948 | 50.0 mm (2.0 in) |
| 1949 | 89.4 mm (3.5 in) |
| 1950 | 71.9 mm (2.8 in) |
| 1951 | 57.9 mm (2.3 in) |
| 1952 | 108.7 mm (4.3 in) |
| 1953 | 73.4 mm (2.9 in) |
| 1954 | 102.9 mm (4.1 in) |
| 1955 | 82.0 mm (3.2 in) |
| 1956 | 78.2 mm (3.1 in) |
| 1957 | 82.0 mm (3.2 in) |
| 1958 | 112.8 mm (4.4 in) |
| 1959 | 45.2 mm (1.8 in) |
| 1960 | 49.3 mm (1.9 in) |
| 1961 | 81.3 mm (3.2 in) |
| 1962 | 87.9 mm (3.5 in) |
| 1963 | 65.5 mm (2.6 in) |
| 1964 | 164.3 mm (6.5 in) |
| 1965 | 56.1 mm (2.2 in) |
| 1966 | 64.0 mm (2.5 in) |
| 1967 | 79.8 mm (3.1 in) |
| 1968 | 73.7 mm (2.9 in) |
| 1969 | 36.8 mm (1.4 in) |
| 1970 | 43.7 mm (1.7 in) |
| 1971 | 112.8 mm (4.4 in) |
| 1972 | 80.0 mm (3.1 in) |
| 1973 | 46.0 mm (1.8 in) |
| 1974 | 96.5 mm (3.8 in) |
| 1975 | 90.9 mm (3.6 in) |
| 1976 | 73.7 mm (2.9 in) |
| 1977 | 61.0 mm (2.4 in) |
| 1978 | 96.3 mm (3.8 in) |
| 1979 | 129.3 mm (5.1 in) |
| 1980 | 65.5 mm (2.6 in) |
| 1981 | 48.5 mm (1.9 in) |
| 1982 | 41.4 mm (1.6 in) |
| 1983 | 61.0 mm (2.4 in) |
| 1984 | 66.3 mm (2.6 in) |
| 1985 | 86.1 mm (3.4 in) |
| 1986 | 41.9 mm (1.6 in) |
| 1987 | 143.5 mm (5.6 in) |
| 1988 | 62.7 mm (2.5 in) |
| 1989 | 61.0 mm (2.4 in) |
| 1990 | 106.7 mm (4.2 in) |
| 1991 | 64.0 mm (2.5 in) |
| 1992 | 81.5 mm (3.2 in) |
| 1993 | 75.7 mm (3.0 in) |
| 1994 | 57.2 mm (2.3 in) |
| 1995 | 57.2 mm (2.3 in) |
| 1996 | 221.7 mm (8.7 in) |
| 1997 | 51.3 mm (2.0 in) |
| 1998 | 70.4 mm (2.8 in) |
| 1999 | 54.1 mm (2.1 in) |
| 2000 | 78.0 mm (3.1 in) |
| 2001 | 54.6 mm (2.1 in) |
| 2002 | 54.1 mm (2.1 in) |
| 2003 | 66.3 mm (2.6 in) |
| 2004 | 84.1 mm (3.3 in) |
| 2005 | 57.2 mm (2.3 in) |
| 2006 | 54.6 mm (2.1 in) |
| 2007 | 86.4 mm (3.4 in) |
| 2008 | 88.9 mm (3.5 in) |
| 2009 | 84.3 mm (3.3 in) |
| 2010 | 83.8 mm (3.3 in) |
| 2011 | 67.3 mm (2.6 in) |
| 2012 | 67.3 mm (2.6 in) |
| 2013 | 90.7 mm (3.6 in) |
| 2014 | 57.7 mm (2.3 in) |
| 2015 | 50.0 mm (2.0 in) |
| 2016 | 66.8 mm (2.6 in) |
| 2017 | 45.7 mm (1.8 in) |
| 2018 | 129.5 mm (5.1 in) |
| 2019 | 62.2 mm (2.4 in) |
| 2020 | 100.3 mm (3.9 in) |
| 2021 | 94.0 mm (3.7 in) |
| 2022 | 53.3 mm (2.1 in) |
| 2023 | 86.1 mm (3.4 in) |
| 2024 | 96.0 mm (3.8 in) |
| 2025 | 66.0 mm (2.6 in) |
| 2026 | 62.5 mm (2.5 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1922 | n/a |
| 1923 | 71.1 mm (2.8 in) |
| 1924 | 114.1 mm (4.5 in) |
| 1925 | 74.9 mm (2.9 in) |
| 1926 | n/a |
| 1927 | 128.6 mm (5.1 in) |
| 1928 | n/a |
| 1929 | n/a |
| 1930 | 43.9 mm (1.7 in) |
| 1931 | 100.8 mm (4.0 in) |
| 1932 | 112.6 mm (4.4 in) |
| 1933 | 73.7 mm (2.9 in) |
| 1934 | 124.5 mm (4.9 in) |
| 1935 | 91.5 mm (3.6 in) |
| 1936 | 78.8 mm (3.1 in) |
| 1937 | 99.1 mm (3.9 in) |
| 1938 | 93.5 mm (3.7 in) |
| 1939 | 166.4 mm (6.6 in) |
| 1940 | 266.3 mm (10.5 in) |
| 1941 | 70.6 mm (2.8 in) |
| 1942 | 142.5 mm (5.6 in) |
| 1943 | 63.1 mm (2.5 in) |
| 1944 | 257.0 mm (10.1 in) |
| 1945 | 173.0 mm (6.8 in) |
| 1946 | 87.7 mm (3.5 in) |
| 1947 | 128.5 mm (5.1 in) |
| 1948 | 72.1 mm (2.8 in) |
| 1949 | 152.5 mm (6.0 in) |
| 1950 | 105.6 mm (4.2 in) |
| 1951 | 79.2 mm (3.1 in) |
| 1952 | 128.0 mm (5.0 in) |
| 1953 | 73.9 mm (2.9 in) |
| 1954 | 158.3 mm (6.2 in) |
| 1955 | 113.7 mm (4.5 in) |
| 1956 | 98.0 mm (3.9 in) |
| 1957 | 95.2 mm (3.7 in) |
| 1958 | 136.5 mm (5.4 in) |
| 1959 | 137.0 mm (5.4 in) |
| 1960 | 70.6 mm (2.8 in) |
| 1961 | 119.4 mm (4.7 in) |
| 1962 | 89.7 mm (3.5 in) |
| 1963 | 80.0 mm (3.1 in) |
| 1964 | 229.8 mm (9.0 in) |
| 1965 | 128.4 mm (5.1 in) |
| 1966 | 80.6 mm (3.2 in) |
| 1967 | 146.6 mm (5.8 in) |
| 1968 | 89.7 mm (3.5 in) |
| 1969 | 62.5 mm (2.5 in) |
| 1970 | 79.5 mm (3.1 in) |
| 1971 | 172.5 mm (6.8 in) |
| 1972 | 176.7 mm (7.0 in) |
| 1973 | 69.6 mm (2.7 in) |
| 1974 | 122.9 mm (4.8 in) |
| 1975 | 121.0 mm (4.8 in) |
| 1976 | 83.3 mm (3.3 in) |
| 1977 | 73.8 mm (2.9 in) |
| 1978 | 173.2 mm (6.8 in) |
| 1979 | 136.6 mm (5.4 in) |
| 1980 | 70.9 mm (2.8 in) |
| 1981 | 95.0 mm (3.7 in) |
| 1982 | 74.6 mm (2.9 in) |
| 1983 | 85.5 mm (3.4 in) |
| 1984 | 154.1 mm (6.1 in) |
| 1985 | 170.2 mm (6.7 in) |
| 1986 | 55.4 mm (2.2 in) |
| 1987 | 185.8 mm (7.3 in) |
| 1988 | 103.8 mm (4.1 in) |
| 1989 | 133.4 mm (5.3 in) |
| 1990 | 153.0 mm (6.0 in) |
| 1991 | 110.7 mm (4.4 in) |
| 1992 | 91.9 mm (3.6 in) |
| 1993 | 87.4 mm (3.4 in) |
| 1994 | 116.3 mm (4.6 in) |
| 1995 | 110.5 mm (4.4 in) |
| 1996 | 347.5 mm (13.7 in) |
| 1997 | 90.5 mm (3.6 in) |
| 1998 | 89.2 mm (3.5 in) |
| 1999 | 114.0 mm (4.5 in) |
| 2000 | 81.8 mm (3.2 in) |
| 2001 | 87.4 mm (3.4 in) |
| 2002 | 73.0 mm (2.9 in) |
| 2003 | 123.1 mm (4.8 in) |
| 2004 | 98.4 mm (3.9 in) |
| 2005 | 77.1 mm (3.0 in) |
| 2006 | 156.9 mm (6.2 in) |
| 2007 | 168.8 mm (6.6 in) |
| 2008 | 109.2 mm (4.3 in) |
| 2009 | 122.2 mm (4.8 in) |
| 2010 | 152.5 mm (6.0 in) |
| 2011 | 84.6 mm (3.3 in) |
| 2012 | 113.0 mm (4.4 in) |
| 2013 | 174.3 mm (6.9 in) |
| 2014 | 101.9 mm (4.0 in) |
| 2015 | 114.3 mm (4.5 in) |
| 2016 | 112.1 mm (4.4 in) |
| 2017 | 127.7 mm (5.0 in) |
| 2018 | 161.0 mm (6.3 in) |
| 2019 | 124.2 mm (4.9 in) |
| 2020 | 188.8 mm (7.4 in) |
| 2021 | 98.1 mm (3.9 in) |
| 2022 | 69.9 mm (2.8 in) |
| 2023 | 98.1 mm (3.9 in) |
| 2024 | 145.1 mm (5.7 in) |
| 2025 | 85.5 mm (3.4 in) |
| 2026 | 80.6 mm (3.2 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1922 | 1 day |
| 1923 | 17 days |
| 1924 | 13 days |
| 1925 | 13 days |
| 1926 | n/a |
| 1927 | 11 days |
| 1928 | 1 day |
| 1929 | n/a |
| 1930 | 17 days |
| 1931 | 20 days |
| 1932 | 15 days |
| 1933 | 18 days |
| 1934 | 23 days |
| 1935 | 14 days |
| 1936 | 18 days |
| 1937 | 13 days |
| 1938 | 20 days |
| 1939 | 21 days |
| 1940 | 18 days |
| 1941 | 22 days |
| 1942 | 22 days |
| 1943 | 26 days |
| 1944 | 20 days |
| 1945 | 18 days |
| 1946 | 21 days |
| 1947 | 19 days |
| 1948 | 16 days |
| 1949 | 17 days |
| 1950 | 17 days |
| 1951 | 22 days |
| 1952 | 23 days |
| 1953 | 30 days |
| 1954 | 28 days |
| 1955 | 16 days |
| 1956 | 21 days |
| 1957 | 15 days |
| 1958 | 25 days |
| 1959 | 21 days |
| 1960 | 17 days |
| 1961 | 15 days |
| 1962 | 16 days |
| 1963 | 23 days |
| 1964 | 22 days |
| 1965 | 18 days |
| 1966 | 24 days |
| 1967 | 19 days |
| 1968 | 25 days |
| 1969 | 17 days |
| 1970 | 25 days |
| 1971 | 16 days |
| 1972 | 15 days |
| 1973 | 19 days |
| 1974 | 23 days |
| 1975 | 17 days |
| 1976 | 24 days |
| 1977 | 18 days |
| 1978 | 18 days |
| 1979 | 11 days |
| 1980 | 21 days |
| 1981 | 21 days |
| 1982 | 18 days |
| 1983 | 25 days |
| 1984 | 23 days |
| 1985 | 21 days |
| 1986 | 17 days |
| 1987 | 16 days |
| 1988 | 17 days |
| 1989 | 18 days |
| 1990 | 20 days |
| 1991 | 22 days |
| 1992 | 20 days |
| 1993 | 16 days |
| 1994 | 16 days |
| 1995 | 27 days |
| 1996 | 13 days |
| 1997 | 15 days |
| 1998 | 24 days |
| 1999 | 30 days |
| 2000 | 43 days |
| 2001 | 39 days |
| 2002 | 19 days |
| 2003 | 12 days |
| 2004 | 15 days |
| 2005 | 22 days |
| 2006 | 25 days |
| 2007 | 27 days |
| 2008 | 12 days |
| 2009 | 23 days |
| 2010 | 17 days |
| 2011 | 19 days |
| 2012 | 22 days |
| 2013 | 19 days |
| 2014 | 15 days |
| 2015 | 15 days |
| 2016 | 25 days |
| 2017 | 23 days |
| 2018 | 11 days |
| 2019 | 15 days |
| 2020 | 13 days |
| 2021 | 24 days |
| 2022 | 13 days |
| 2023 | 13 days |
| 2024 | 40 days |
| 2025 | 19 days |
| 2026 | 19 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
90 years with a frostAcross 90 years with a frost, the median last spring frost at Chatham falls on 26 April and the median first autumn frost on 18 October, which leaves a median of 174 days between them.
In 1996 to 2025 the median growing season was 174 days. That is 9 days fewer than in 1924 to 1957.
Fitted over all years, the growing season changes by -1.4 days per decade at this station.
| Measure | Median, all years | Earliest period (1924 to 1957) | Recent period (1996 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 26 April | 19 April | 29 April | 10 days later | +1.6 days per decade |
| First autumn frost | 18 October | 15 October | 22 October | 7 days later | +0.1 days per decade |
| Growing days | 174 days | 183 days | 174 days | 9 days fewer | -1.4 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
96 years, 1930 to 2025A day with at least 68.9 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 194.8 mm (7.7 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 68.9 mm (2.7 in) | |
| 5 years | 93.8 mm (3.7 in) | |
| 10 years | 113.3 mm (4.5 in) | |
| 25 years | 142.1 mm (5.6 in) | |
| 50 years | 166.8 mm (6.6 in) | |
| 100 years | 194.8 mm (7.7 in) | Longer than the 96 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, 96 years of values from 1930 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: 221.7 mm (8.7 in) in 1996; 214.6 mm (8.4 in) in 1944; 164.3 mm (6.5 in) in 1964.
Station Changes
No change in the annual mean temperature of this station was found against its neighbours.
Climate Twins
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Chatham had a mean temperature of 13.2 C (55.8 F) and 1,267.4 mm (49.9 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Manchester 4 W (United States, 393 km away), Williamsburg (United States, 422 km away) and N Wilkesboro (United States, 172 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Manchester 4 W | United States | 393 km (244 mi) | 13.1 C (55.5 F) | 1,256.4 mm (49.5 in) | 0.55 |
| Williamsburg | United States | 422 km (262 mi) | 13.2 C (55.8 F) | 1,252.0 mm (49.3 in) | 0.60 |
| N Wilkesboro | United States | 172 km (107 mi) | 13.0 C (55.4 F) | 1,273.3 mm (50.1 in) | 0.60 |
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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-15).