Mammoth Spring Weather Records (USC00034572)
Record envelope, standing records and threshold days for Mammoth Spring (USC00034572), Arkansas, United States, with 123 years of record.
Key Facts for Mammoth Spring
- Mammoth Spring (USC00034572) is a weather station in Arkansas, United States at 36.49 latitude and -91.53 longitude, 153 m (502 ft) above sea level.
- The station reports from 1904 to 2026, 123 years of record.
- 1,464 records set at Mammoth Spring still stand.
- Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
- Mammoth Spring set a daily record precipitation of 81.3 mm (3.2 in) on 2 October 2026 (provisional).
Provisional Records
Records set in the last 60 days are provisional until they clear the revision window.
About the Station
- Location: Arkansas, United States, 36.49 latitude, -91.53 longitude.
- Elevation: 153 m (502 ft).
- Period of record: 1904 to 2026, 123 years.
- Eligible elements: tmax, tmin, prcp, snow, snwd.
Daily Record Envelope and 2026
8 days at or beyond a record| Month | Highest record high | Lowest record low | 2026 highest maximum | 2026 lowest minimum |
|---|---|---|---|---|
| Jan | 26.1 C (79.0 F) | -30.6 C (-23.1 F) | 23.9 C (75.0 F) | -20.6 C (-5.1 F) |
| Feb | 31.7 C (89.1 F) | -31.1 C (-24.0 F) | 25.6 C (78.1 F) | -16.1 C (3.0 F) |
| Mar | 36.1 C (97.0 F) | -17.2 C (1.0 F) | 33.9 C (93.0 F) | -8.9 C (16.0 F) |
| Apr | 35.0 C (95.0 F) | -7.2 C (19.0 F) | 28.9 C (84.0 F) | 0.6 C (33.1 F) |
| May | 37.2 C (99.0 F) | -2.2 C (28.0 F) | 30.0 C (86.0 F) | 2.2 C (36.0 F) |
| Jun | 42.2 C (108.0 F) | 1.7 C (35.1 F) | 32.8 C (91.0 F) | 12.2 C (54.0 F) |
| Jul | 43.3 C (109.9 F) | 7.2 C (45.0 F) | 37.2 C (99.0 F) | 17.8 C (64.0 F) |
| Aug | 42.8 C (109.0 F) | 4.4 C (39.9 F) | 39.4 C (102.9 F) | 13.3 C (55.9 F) |
| Sep | 42.8 C (109.0 F) | -1.1 C (30.0 F) | 39.4 C (102.9 F) | 9.4 C (48.9 F) |
| Oct | 35.6 C (96.1 F) | -9.4 C (15.1 F) | 32.8 C (91.0 F) | 7.2 C (45.0 F) |
| Nov | 30.6 C (87.1 F) | -16.7 C (1.9 F) | n/a | n/a |
| Dec | 26.7 C (80.1 F) | -29.4 C (-20.9 F) | n/a | n/a |
Which Years Hold Standing Records
1,464 standing records| Year set | Standing records |
|---|---|
| 1904 | 3 |
| 1905 | 6 |
| 1906 | 8 |
| 1907 | 15 |
| 1908 | 10 |
| 1909 | 13 |
| 1910 | 15 |
| 1911 | 26 |
| 1912 | 8 |
| 1913 | 23 |
| 1914 | 11 |
| 1915 | 16 |
| 1916 | 8 |
| 1917 | 20 |
| 1918 | 23 |
| 1919 | 9 |
| 1920 | 11 |
| 1921 | 12 |
| 1922 | 6 |
| 1923 | 13 |
| 1924 | 19 |
| 1925 | 23 |
| 1926 | 17 |
| 1927 | 11 |
| 1928 | 14 |
| 1929 | 19 |
| 1930 | 24 |
| 1931 | 14 |
| 1932 | 15 |
| 1933 | 15 |
| 1934 | 19 |
| 1935 | 4 |
| 1936 | 13 |
| 1937 | 11 |
| 1938 | 12 |
| 1939 | 16 |
| 1940 | 18 |
| 1941 | 14 |
| 1942 | 14 |
| 1943 | 20 |
| 1944 | 6 |
| 1945 | 11 |
| 1946 | 6 |
| 1947 | 9 |
| 1948 | 9 |
| 1949 | 5 |
| 1950 | 14 |
| 1951 | 10 |
| 1952 | 22 |
| 1953 | 19 |
| 1954 | 24 |
| 1955 | 24 |
| 1956 | 14 |
| 1957 | 11 |
| 1958 | 5 |
| 1959 | 10 |
| 1960 | 14 |
| 1961 | 14 |
| 1962 | 16 |
| 1963 | 19 |
| 1964 | 18 |
| 1965 | 13 |
| 1966 | 14 |
| 1967 | 19 |
| 1968 | 2 |
| 1969 | 5 |
| 1970 | 8 |
| 1971 | 12 |
| 1972 | 13 |
| 1973 | 9 |
| 1974 | 18 |
| 1975 | 12 |
| 1976 | 19 |
| 1977 | 9 |
| 1978 | 9 |
| 1979 | 8 |
| 1980 | 23 |
| 1981 | 9 |
| 1982 | 12 |
| 1983 | 14 |
| 1984 | 17 |
| 1985 | 10 |
| 1986 | 11 |
| 1987 | 11 |
| 1988 | 2 |
| 1989 | 18 |
| 1991 | 13 |
| 1992 | 15 |
| 1993 | 16 |
| 1994 | 10 |
| 1995 | 10 |
| 1996 | 12 |
| 1997 | 5 |
| 1998 | 9 |
| 1999 | 3 |
| 2000 | 14 |
| 2001 | 4 |
| 2002 | 5 |
| 2003 | 4 |
| 2004 | 11 |
| 2005 | 5 |
| 2006 | 5 |
| 2007 | 3 |
| 2008 | 10 |
| 2009 | 6 |
| 2010 | 5 |
| 2011 | 8 |
| 2012 | 6 |
| 2013 | 16 |
| 2014 | 20 |
| 2015 | 8 |
| 2016 | 6 |
| 2017 | 4 |
| 2018 | 10 |
| 2019 | 7 |
| 2020 | 6 |
| 2021 | 16 |
| 2022 | 13 |
| 2023 | 4 |
| 2024 | 6 |
| 2025 | 11 |
| 2026 | 13 |
All-Time Record Progression
4 new records| Date | Kind | Detail |
|---|---|---|
| 1951-02-02 | Record low minimum temperature | Record low minimum temperature -31.1 C (-24.0 F) |
| 1977-01-09 | Record daily snowfall | Record daily snowfall 22.9 cm (9.0 in) |
| 1980-07-13 | Record high maximum temperature | Record high maximum temperature 43.3 C (109.9 F) |
| 1982-12-03 | Record daily precipitation | Record daily precipitation 313.9 mm (12.4 in) |
Wettest Day of Each Month
Dec: 313.9 mm (12.4 in)| Month | Record daily precipitation (mm) | Date |
|---|---|---|
| Jan | 190.5 mm (7.5 in) | 30 January 2010 |
| Feb | 108.0 mm (4.3 in) | 14 February 1949 |
| Mar | 182.9 mm (7.2 in) | 19 March 2008 |
| Apr | 129.5 mm (5.1 in) | 5 April 1997 |
| May | 124.7 mm (4.9 in) | 12 May 1918 |
| Jun | 88.9 mm (3.5 in) | 13 June 1925 |
| Jul | 129.5 mm (5.1 in) | 8 July 1928 |
| Aug | 152.4 mm (6.0 in) | 16 August 1926 |
| Sep | 111.8 mm (4.4 in) | 25 September 1993 |
| Oct | 110.0 mm (4.3 in) | 30 October 2009 |
| Nov | 127.0 mm (5.0 in) | 18 November 2003 |
| Dec | 313.9 mm (12.4 in) | 3 December 1982 |
Period of Record Coverage
1904 to 2026| Year | Days with data | Share of year | Complete |
|---|---|---|---|
| 1904 | 248 | 68% | No |
| 1905 | 73 | 20% | No |
| 1906 | 223 | 61% | No |
| 1907 | 364 | 100% | Yes |
| 1908 | 356 | 97% | Yes |
| 1909 | 358 | 98% | Yes |
| 1910 | 360 | 99% | Yes |
| 1911 | 361 | 99% | Yes |
| 1912 | 362 | 99% | Yes |
| 1913 | 360 | 99% | Yes |
| 1914 | 359 | 98% | Yes |
| 1915 | 365 | 100% | Yes |
| 1916 | 366 | 100% | Yes |
| 1917 | 362 | 99% | Yes |
| 1918 | 363 | 99% | Yes |
| 1919 | 362 | 99% | Yes |
| 1920 | 361 | 99% | Yes |
| 1921 | 359 | 98% | Yes |
| 1922 | 316 | 87% | No |
| 1923 | 341 | 93% | Yes |
| 1924 | 332 | 91% | Yes |
| 1925 | 360 | 99% | Yes |
| 1926 | 365 | 100% | Yes |
| 1927 | 359 | 98% | Yes |
| 1928 | 361 | 99% | Yes |
| 1929 | 332 | 91% | Yes |
| 1930 | 286 | 78% | No |
| 1931 | 365 | 100% | Yes |
| 1932 | 366 | 100% | Yes |
| 1933 | 364 | 100% | Yes |
| 1934 | 364 | 100% | Yes |
| 1935 | 365 | 100% | Yes |
| 1936 | 366 | 100% | Yes |
| 1937 | 364 | 100% | Yes |
| 1938 | 365 | 100% | Yes |
| 1939 | 364 | 100% | Yes |
| 1940 | 365 | 100% | Yes |
| 1941 | 359 | 98% | Yes |
| 1942 | 363 | 99% | Yes |
| 1943 | 357 | 98% | Yes |
| 1944 | 365 | 100% | Yes |
| 1945 | 357 | 98% | Yes |
| 1946 | 364 | 100% | Yes |
| 1947 | 349 | 96% | Yes |
| 1948 | 356 | 97% | Yes |
| 1949 | 361 | 99% | Yes |
| 1950 | 356 | 98% | Yes |
| 1951 | 244 | 67% | No |
| 1952 | 327 | 89% | No |
| 1953 | 361 | 99% | Yes |
| 1954 | 234 | 64% | No |
| 1955 | 365 | 100% | Yes |
| 1956 | 356 | 97% | Yes |
| 1957 | 357 | 98% | Yes |
| 1958 | 364 | 100% | Yes |
| 1959 | 351 | 96% | Yes |
| 1960 | 362 | 99% | Yes |
| 1961 | 348 | 95% | Yes |
| 1962 | 344 | 94% | Yes |
| 1963 | 345 | 95% | Yes |
| 1964 | 325 | 89% | No |
| 1965 | 250 | 68% | No |
| 1966 | 321 | 88% | No |
| 1967 | 351 | 96% | Yes |
| 1968 | 304 | 83% | No |
| 1969 | 365 | 100% | Yes |
| 1970 | 365 | 100% | Yes |
| 1971 | 364 | 100% | Yes |
| 1972 | 366 | 100% | Yes |
| 1973 | 364 | 100% | Yes |
| 1974 | 365 | 100% | Yes |
| 1975 | 365 | 100% | Yes |
| 1976 | 366 | 100% | Yes |
| 1977 | 365 | 100% | Yes |
| 1978 | 365 | 100% | Yes |
| 1979 | 358 | 98% | Yes |
| 1980 | 366 | 100% | Yes |
| 1981 | 365 | 100% | Yes |
| 1982 | 362 | 99% | Yes |
| 1983 | 365 | 100% | Yes |
| 1984 | 366 | 100% | Yes |
| 1985 | 365 | 100% | Yes |
| 1986 | 365 | 100% | Yes |
| 1987 | 363 | 99% | Yes |
| 1988 | 213 | 58% | No |
| 1989 | 359 | 98% | Yes |
| 1990 | 30 | 8% | No |
| 1991 | 355 | 97% | Yes |
| 1992 | 354 | 97% | Yes |
| 1993 | 352 | 96% | Yes |
| 1994 | 355 | 97% | Yes |
| 1995 | 350 | 96% | Yes |
| 1996 | 357 | 98% | Yes |
| 1997 | 353 | 97% | Yes |
| 1998 | 353 | 97% | Yes |
| 1999 | 355 | 97% | Yes |
| 2000 | 358 | 98% | Yes |
| 2001 | 331 | 91% | Yes |
| 2002 | 350 | 96% | Yes |
| 2003 | 350 | 96% | Yes |
| 2004 | 358 | 98% | Yes |
| 2005 | 360 | 99% | Yes |
| 2006 | 356 | 98% | Yes |
| 2007 | 358 | 98% | Yes |
| 2008 | 356 | 97% | Yes |
| 2009 | 343 | 94% | Yes |
| 2010 | 362 | 99% | Yes |
| 2011 | 361 | 99% | Yes |
| 2012 | 358 | 98% | Yes |
| 2013 | 361 | 99% | Yes |
| 2014 | 362 | 99% | Yes |
| 2015 | 362 | 99% | Yes |
| 2016 | 363 | 99% | Yes |
| 2017 | 365 | 100% | Yes |
| 2018 | 365 | 100% | Yes |
| 2019 | 365 | 100% | Yes |
| 2020 | 364 | 99% | Yes |
| 2021 | 363 | 99% | Yes |
| 2022 | 365 | 100% | Yes |
| 2023 | 363 | 99% | Yes |
| 2024 | 365 | 100% | Yes |
| 2025 | 365 | 100% | Yes |
| 2026 | 283 | 78% | No |
Latest Records
20| Date | Station | Record | Value | Beat old record by | Old record stood | Significance |
|---|---|---|---|---|---|---|
| 2 October 2026 | Mammoth Spring, US | daily rain (Provisional) | 81.3 mm (3.2 in) | 49.5 mm (1.9 in) | 32 years | 51 of 100 (Notable) |
| 10 September 2026 | Mammoth Spring, US | daily high min (Tie, Provisional) | 22.8 C (73.0 F) | tie | 100 years | 10 of 100 (Routine) |
| 19 August 2026 | Mammoth Spring, US | daily high min (Provisional) | 24.4 C (75.9 F) | 1.1 C (2.0 F) | 92 years | 40 of 100 (Notable) |
| 14 August 2026 | Mammoth Spring, US | daily high min | 25.0 C (77.0 F) | 1.1 C (2.0 F) | 93 years | 41 of 100 (Notable) |
| 23 June 2026 | Mammoth Spring, US | daily low max | 22.2 C (72.0 F) | 1.7 C (3.1 F) | 113 years | 44 of 100 (Notable) |
| 14 June 2026 | Mammoth Spring, US | daily rain | 48.3 mm (1.9 in) | 5.6 mm (0.22 in) | 60 years | 32 of 100 (Routine) |
| 8 June 2026 | Mammoth Spring, US | daily high min (Tie) | 22.2 C (72.0 F) | tie | 120 years | 10 of 100 (Routine) |
| 28 May 2026 | Mammoth Spring, US | daily high min (Tie) | 20.0 C (68.0 F) | tie | 117 years | 10 of 100 (Routine) |
| 15 April 2026 | Mammoth Spring, US | daily high min | 20.0 C (68.0 F) | 0.6 C (1.1 F) | 13 years | 15 of 100 (Routine) |
| 27 March 2026 | Mammoth Spring, US | daily high max (Tie) | 31.1 C (88.0 F) | tie | 116 years | 10 of 100 (Routine) |
| 23 March 2026 | Mammoth Spring, US | daily high max | 33.9 C (93.0 F) | 1.1 C (2.0 F) | 116 years | 41 of 100 (Notable) |
| 22 March 2026 | Mammoth Spring, US | daily high max | 32.8 C (91.0 F) | 1.1 C (2.0 F) | 116 years | 41 of 100 (Notable) |
| 17 March 2026 | Mammoth Spring, US | daily low min | -8.9 C (16.0 F) | 1.1 C (2.0 F) | 84 years | 36 of 100 (Notable) |
| 17 March 2026 | Mammoth Spring, US | daily low max | 2.2 C (36.0 F) | 0.6 C (1.1 F) | 56 years | 26 of 100 (Routine) |
| 7 March 2026 | Mammoth Spring, US | daily high min | 15.6 C (60.1 F) | 0.6 C (1.1 F) | 52 years | 26 of 100 (Routine) |
| 20 February 2026 | Mammoth Spring, US | daily high max | 25.6 C (78.1 F) | 1.2 C (2.2 F) | 44 years | 24 of 100 (Routine) |
| 27 January 2026 | Mammoth Spring, US | daily low min | -19.4 C (-2.9 F) | 1.6 C (2.9 F) | 90 years | 39 of 100 (Notable) |
| 26 January 2026 | Mammoth Spring, US | daily low max | -7.2 C (19.0 F) | 3.9 C (7.0 F) | 119 years | 45 of 100 (Notable) |
| 26 January 2026 | Mammoth Spring, US | daily low min | -20.6 C (-5.1 F) | 2.3 C (4.1 F) | 86 years | 38 of 100 (Notable) |
| 25 January 2026 | Mammoth Spring, US | daily low max | -11.1 C (12.0 F) | 3.3 C (5.9 F) | 86 years | 39 of 100 (Notable) |
Climate Trend
100 complete years, 1907 to 2025| Year | Annual mean temperature | Difference from the station mean |
|---|---|---|
| 1907 | 14.6 C | +0.09 C |
| 1908 | 14.6 C | +0.12 C |
| 1909 | 14.7 C | +0.26 C |
| 1910 | 13.8 C | -0.70 C |
| 1911 | 15.2 C | +0.70 C |
| 1912 | 13.5 C | -1.02 C |
| 1913 | 15.3 C | +0.80 C |
| 1914 | 14.8 C | +0.30 C |
| 1915 | 14.4 C | -0.10 C |
| 1916 | 14.9 C | +0.42 C |
| 1917 | 13.3 C | -1.18 C |
| 1918 | 14.7 C | +0.23 C |
| 1919 | 15.1 C | +0.61 C |
| 1920 | 14.5 C | +0.00 C |
| 1921 | 16.5 C | +1.97 C |
| 1925 | 14.5 C | -0.01 C |
| 1926 | 14.2 C | -0.33 C |
| 1927 | 15.8 C | +1.27 C |
| 1928 | 14.8 C | +0.31 C |
| 1931 | 15.7 C | +1.17 C |
| 1932 | 15.4 C | +0.90 C |
| 1933 | 15.6 C | +1.09 C |
| 1934 | 15.4 C | +0.94 C |
| 1935 | 14.6 C | +0.11 C |
| 1936 | 15.5 C | +1.04 C |
| 1937 | 14.5 C | +0.06 C |
| 1938 | 15.8 C | +1.36 C |
| 1939 | 15.7 C | +1.20 C |
| 1940 | 13.9 C | -0.55 C |
| 1941 | 15.8 C | +1.28 C |
| 1942 | 15.1 C | +0.59 C |
| 1943 | 15.3 C | +0.80 C |
| 1944 | 15.3 C | +0.79 C |
| 1945 | 14.3 C | -0.20 C |
| 1946 | 15.4 C | +0.96 C |
| 1948 | 13.5 C | -0.99 C |
| 1949 | 15.0 C | +0.54 C |
| 1950 | 13.5 C | -1.02 C |
| 1953 | 15.2 C | +0.73 C |
| 1955 | 15.1 C | +0.64 C |
| 1957 | 14.7 C | +0.22 C |
| 1958 | 13.6 C | -0.88 C |
| 1959 | 14.5 C | +0.04 C |
| 1960 | 13.9 C | -0.54 C |
| 1963 | 14.4 C | -0.11 C |
| 1964 | 14.7 C | +0.25 C |
| 1969 | 14.2 C | -0.25 C |
| 1970 | 14.1 C | -0.36 C |
| 1971 | 14.8 C | +0.34 C |
| 1972 | 14.7 C | +0.24 C |
| 1973 | 15.2 C | +0.68 C |
| 1974 | 14.8 C | +0.35 C |
| 1975 | 14.5 C | +0.06 C |
| 1976 | 13.6 C | -0.93 C |
| 1977 | 14.7 C | +0.22 C |
| 1978 | 13.6 C | -0.90 C |
| 1979 | 13.3 C | -1.14 C |
| 1980 | 14.6 C | +0.09 C |
| 1981 | 14.5 C | +0.00 C |
| 1982 | 14.2 C | -0.29 C |
| 1983 | 14.0 C | -0.45 C |
| 1984 | 14.5 C | +0.02 C |
| 1985 | 14.1 C | -0.39 C |
| 1986 | 15.6 C | +1.12 C |
| 1987 | 15.3 C | +0.81 C |
| 1989 | 14.3 C | -0.23 C |
| 1991 | 14.4 C | -0.09 C |
| 1992 | 13.4 C | -1.05 C |
| 1993 | 12.8 C | -1.67 C |
| 1994 | 13.5 C | -1.03 C |
| 1995 | 13.4 C | -1.06 C |
| 1996 | 12.9 C | -1.56 C |
| 1997 | 13.3 C | -1.18 C |
| 1998 | 15.1 C | +0.66 C |
| 1999 | 14.6 C | +0.11 C |
| 2000 | 13.9 C | -0.58 C |
| 2002 | 14.1 C | -0.41 C |
| 2003 | 13.8 C | -0.65 C |
| 2004 | 14.3 C | -0.19 C |
| 2005 | 14.8 C | +0.30 C |
| 2006 | 14.7 C | +0.25 C |
| 2007 | 14.8 C | +0.33 C |
| 2008 | 13.4 C | -1.08 C |
| 2009 | 13.8 C | -0.71 C |
| 2010 | 14.0 C | -0.46 C |
| 2011 | 14.0 C | -0.52 C |
| 2012 | 14.8 C | +0.36 C |
| 2013 | 12.6 C | -1.85 C |
| 2014 | 12.1 C | -2.40 C |
| 2015 | 14.3 C | -0.16 C |
| 2016 | 15.3 C | +0.82 C |
| 2017 | 15.1 C | +0.63 C |
| 2018 | 14.1 C | -0.42 C |
| 2019 | 14.2 C | -0.31 C |
| 2020 | 14.3 C | -0.14 C |
| 2021 | 14.4 C | -0.12 C |
| 2022 | 13.9 C | -0.56 C |
| 2023 | 15.0 C | +0.52 C |
| 2024 | 15.2 C | +0.67 C |
| 2025 | 14.8 C | +0.34 C |
The annual mean temperature here has fallen by 0.07 C (0.03 to 0.11) per decade over 1907 to 2025. In Fahrenheit: 0.1 F (0.1 to 0.2) per decade. The slope is a straight line fitted to 100 complete years; the brackets give its 95 percent interval.
| Measure | Per decade (C) | Per decade (F) | Period | Complete years | Reading |
|---|---|---|---|---|---|
| Annual mean temperature | -0.07 C (-0.11 to -0.03) per decade | -0.1 F (-0.2 to -0.1) per decade | 1907 to 2025 | 100 | Fall |
| Mean daily maximum | -0.08 C (-0.13 to -0.03) per decade | -0.1 F (-0.2 to -0.1) per decade | 1907 to 2025 | 100 | Fall |
| Mean daily minimum | -0.07 C (-0.11 to -0.02) per decade | -0.12 F (-0.20 to -0.04) per decade | 1907 to 2025 | 100 | 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
1904 to 2026| Measure | Record | Year of the record | Median year | Years with a value |
|---|---|---|---|---|
| Hottest day (TXx) | 43.3 C (109.9 F) | 1980 | 38.3 C (100.9 F) | 123 |
| Coldest night (TNn) | -31.1 C (-24.0 F) | 1951 | -17.2 C (1.0 F) | 123 |
| Wettest day (Rx1day) | 313.9 mm (12.4 in) | 1982 | 74.9 mm (2.9 in) | 123 |
| Wettest five days (Rx5day) | 357.6 mm (14.1 in) | 1982 | 115.1 mm (4.5 in) | 123 |
| Longest dry spell (CDD) | 90 days | 1904 | 22 days | 123 |
Hottest day (TXx)
| Year | Hottest day (TXx) |
|---|---|
| 1904 | 37.2 C (99.0 F) |
| 1905 | 25.6 C (78.1 F) |
| 1906 | 33.9 C (93.0 F) |
| 1907 | 39.4 C (102.9 F) |
| 1908 | 36.7 C (98.1 F) |
| 1909 | 39.4 C (102.9 F) |
| 1910 | 33.9 C (93.0 F) |
| 1911 | 40.6 C (105.1 F) |
| 1912 | 39.4 C (102.9 F) |
| 1913 | 41.7 C (107.1 F) |
| 1914 | 39.4 C (102.9 F) |
| 1915 | 36.7 C (98.1 F) |
| 1916 | 37.8 C (100.0 F) |
| 1917 | 34.4 C (93.9 F) |
| 1918 | 41.1 C (106.0 F) |
| 1919 | 36.7 C (98.1 F) |
| 1920 | 36.7 C (98.1 F) |
| 1921 | 37.2 C (99.0 F) |
| 1922 | 39.4 C (102.9 F) |
| 1923 | 38.9 C (102.0 F) |
| 1924 | 36.7 C (98.1 F) |
| 1925 | 41.1 C (106.0 F) |
| 1926 | 40.6 C (105.1 F) |
| 1927 | 35.6 C (96.1 F) |
| 1928 | 36.1 C (97.0 F) |
| 1929 | 38.3 C (100.9 F) |
| 1930 | 41.7 C (107.1 F) |
| 1931 | 38.3 C (100.9 F) |
| 1932 | 37.8 C (100.0 F) |
| 1933 | 37.8 C (100.0 F) |
| 1934 | 42.8 C (109.0 F) |
| 1935 | 37.8 C (100.0 F) |
| 1936 | 41.7 C (107.1 F) |
| 1937 | 38.3 C (100.9 F) |
| 1938 | 38.9 C (102.0 F) |
| 1939 | 39.4 C (102.9 F) |
| 1940 | 37.8 C (100.0 F) |
| 1941 | 40.0 C (104.0 F) |
| 1942 | 38.9 C (102.0 F) |
| 1943 | 40.6 C (105.1 F) |
| 1944 | 38.3 C (100.9 F) |
| 1945 | 37.2 C (99.0 F) |
| 1946 | 39.4 C (102.9 F) |
| 1947 | 40.6 C (105.1 F) |
| 1948 | 36.7 C (98.1 F) |
| 1949 | 35.6 C (96.1 F) |
| 1950 | 35.0 C (95.0 F) |
| 1951 | 32.2 C (90.0 F) |
| 1952 | 39.4 C (102.9 F) |
| 1953 | 39.4 C (102.9 F) |
| 1954 | 42.8 C (109.0 F) |
| 1955 | 37.8 C (100.0 F) |
| 1956 | 40.6 C (105.1 F) |
| 1957 | 37.2 C (99.0 F) |
| 1958 | 36.7 C (98.1 F) |
| 1959 | 36.7 C (98.1 F) |
| 1960 | 37.2 C (99.0 F) |
| 1961 | 36.7 C (98.1 F) |
| 1962 | 41.7 C (107.1 F) |
| 1963 | 40.6 C (105.1 F) |
| 1964 | 41.7 C (107.1 F) |
| 1965 | 38.3 C (100.9 F) |
| 1966 | 40.0 C (104.0 F) |
| 1967 | 35.0 C (95.0 F) |
| 1968 | 35.6 C (96.1 F) |
| 1969 | 40.6 C (105.1 F) |
| 1970 | 38.3 C (100.9 F) |
| 1971 | 39.4 C (102.9 F) |
| 1972 | 39.4 C (102.9 F) |
| 1973 | 38.3 C (100.9 F) |
| 1974 | 38.3 C (100.9 F) |
| 1975 | 37.8 C (100.0 F) |
| 1976 | 36.7 C (98.1 F) |
| 1977 | 37.8 C (100.0 F) |
| 1978 | 38.9 C (102.0 F) |
| 1979 | 35.6 C (96.1 F) |
| 1980 | 43.3 C (109.9 F) |
| 1981 | 38.3 C (100.9 F) |
| 1982 | 36.7 C (98.1 F) |
| 1983 | 40.0 C (104.0 F) |
| 1984 | 41.1 C (106.0 F) |
| 1985 | 39.4 C (102.9 F) |
| 1986 | 41.1 C (106.0 F) |
| 1987 | 38.9 C (102.0 F) |
| 1988 | 37.8 C (100.0 F) |
| 1989 | 36.7 C (98.1 F) |
| 1990 | 20.6 C (69.1 F) |
| 1991 | 36.7 C (98.1 F) |
| 1992 | 33.9 C (93.0 F) |
| 1993 | 37.2 C (99.0 F) |
| 1994 | 36.1 C (97.0 F) |
| 1995 | 37.2 C (99.0 F) |
| 1996 | 36.7 C (98.1 F) |
| 1997 | 38.9 C (102.0 F) |
| 1998 | 37.8 C (100.0 F) |
| 1999 | 39.4 C (102.9 F) |
| 2000 | 40.6 C (105.1 F) |
| 2001 | 40.6 C (105.1 F) |
| 2002 | 36.1 C (97.0 F) |
| 2003 | 37.2 C (99.0 F) |
| 2004 | 36.7 C (98.1 F) |
| 2005 | 38.3 C (100.9 F) |
| 2006 | 38.3 C (100.9 F) |
| 2007 | 40.0 C (104.0 F) |
| 2008 | 37.2 C (99.0 F) |
| 2009 | 36.1 C (97.0 F) |
| 2010 | 39.4 C (102.9 F) |
| 2011 | 41.7 C (107.1 F) |
| 2012 | 42.2 C (108.0 F) |
| 2013 | 36.7 C (98.1 F) |
| 2014 | 38.3 C (100.9 F) |
| 2015 | 35.6 C (96.1 F) |
| 2016 | 36.7 C (98.1 F) |
| 2017 | 36.7 C (98.1 F) |
| 2018 | 37.2 C (99.0 F) |
| 2019 | 35.6 C (96.1 F) |
| 2020 | 36.7 C (98.1 F) |
| 2021 | 37.2 C (99.0 F) |
| 2022 | 40.6 C (105.1 F) |
| 2023 | 38.3 C (100.9 F) |
| 2024 | 36.7 C (98.1 F) |
| 2025 | 37.2 C (99.0 F) |
| 2026 | 39.4 C (102.9 F) |
Coldest night (TNn)
| Year | Coldest night (TNn) |
|---|---|
| 1904 | -12.8 C (9.0 F) |
| 1905 | -24.4 C (-11.9 F) |
| 1906 | -10.0 C (14.0 F) |
| 1907 | -12.8 C (9.0 F) |
| 1908 | -15.0 C (5.0 F) |
| 1909 | -19.4 C (-2.9 F) |
| 1910 | -18.9 C (-2.0 F) |
| 1911 | -17.2 C (1.0 F) |
| 1912 | -26.7 C (-16.1 F) |
| 1913 | -12.2 C (10.0 F) |
| 1914 | -23.9 C (-11.0 F) |
| 1915 | -11.7 C (10.9 F) |
| 1916 | -24.4 C (-11.9 F) |
| 1917 | -29.4 C (-20.9 F) |
| 1918 | -30.6 C (-23.1 F) |
| 1919 | -19.4 C (-2.9 F) |
| 1920 | -15.6 C (3.9 F) |
| 1921 | -16.1 C (3.0 F) |
| 1922 | -11.7 C (10.9 F) |
| 1923 | -11.7 C (10.9 F) |
| 1924 | -17.8 C (0.0 F) |
| 1925 | -21.1 C (-6.0 F) |
| 1926 | -24.4 C (-11.9 F) |
| 1927 | -15.6 C (3.9 F) |
| 1928 | -11.7 C (10.9 F) |
| 1929 | -22.8 C (-9.0 F) |
| 1930 | -9.4 C (15.1 F) |
| 1931 | -14.4 C (6.1 F) |
| 1932 | -15.6 C (3.9 F) |
| 1933 | -20.0 C (-4.0 F) |
| 1934 | -15.6 C (3.9 F) |
| 1935 | -15.0 C (5.0 F) |
| 1936 | -17.8 C (0.0 F) |
| 1937 | -15.0 C (5.0 F) |
| 1938 | -12.8 C (9.0 F) |
| 1939 | -15.6 C (3.9 F) |
| 1940 | -21.1 C (-6.0 F) |
| 1941 | -10.6 C (12.9 F) |
| 1942 | -29.4 C (-20.9 F) |
| 1943 | -18.3 C (-0.9 F) |
| 1944 | -20.0 C (-4.0 F) |
| 1945 | -24.4 C (-11.9 F) |
| 1946 | -14.4 C (6.1 F) |
| 1947 | -14.4 C (6.1 F) |
| 1948 | -17.2 C (1.0 F) |
| 1949 | -16.1 C (3.0 F) |
| 1950 | -16.1 C (3.0 F) |
| 1951 | -31.1 C (-24.0 F) |
| 1952 | -11.7 C (10.9 F) |
| 1953 | -16.7 C (1.9 F) |
| 1954 | -8.3 C (17.1 F) |
| 1955 | -15.6 C (3.9 F) |
| 1956 | -12.8 C (9.0 F) |
| 1957 | -15.0 C (5.0 F) |
| 1958 | -18.3 C (-0.9 F) |
| 1959 | -19.4 C (-2.9 F) |
| 1960 | -17.2 C (1.0 F) |
| 1961 | -21.1 C (-6.0 F) |
| 1962 | -21.1 C (-6.0 F) |
| 1963 | -26.1 C (-15.0 F) |
| 1964 | -18.3 C (-0.9 F) |
| 1965 | -16.1 C (3.0 F) |
| 1966 | -20.0 C (-4.0 F) |
| 1967 | -17.2 C (1.0 F) |
| 1968 | -18.3 C (-0.9 F) |
| 1969 | -15.0 C (5.0 F) |
| 1970 | -22.8 C (-9.0 F) |
| 1971 | -19.4 C (-2.9 F) |
| 1972 | -17.8 C (0.0 F) |
| 1973 | -17.8 C (0.0 F) |
| 1974 | -16.7 C (1.9 F) |
| 1975 | -14.4 C (6.1 F) |
| 1976 | -18.3 C (-0.9 F) |
| 1977 | -27.2 C (-17.0 F) |
| 1978 | -18.9 C (-2.0 F) |
| 1979 | -20.0 C (-4.0 F) |
| 1980 | -16.1 C (3.0 F) |
| 1981 | -18.3 C (-0.9 F) |
| 1982 | -21.7 C (-7.1 F) |
| 1983 | -22.8 C (-9.0 F) |
| 1984 | -22.8 C (-9.0 F) |
| 1985 | -26.1 C (-15.0 F) |
| 1986 | -15.0 C (5.0 F) |
| 1987 | -11.1 C (12.0 F) |
| 1988 | -15.0 C (5.0 F) |
| 1989 | -22.8 C (-9.0 F) |
| 1990 | -14.4 C (6.1 F) |
| 1991 | -13.3 C (8.1 F) |
| 1992 | -14.4 C (6.1 F) |
| 1993 | -16.1 C (3.0 F) |
| 1994 | -20.6 C (-5.1 F) |
| 1995 | -16.7 C (1.9 F) |
| 1996 | -20.0 C (-4.0 F) |
| 1997 | -18.3 C (-0.9 F) |
| 1998 | -12.8 C (9.0 F) |
| 1999 | -17.2 C (1.0 F) |
| 2000 | -16.7 C (1.9 F) |
| 2001 | -17.8 C (0.0 F) |
| 2002 | -13.3 C (8.1 F) |
| 2003 | -17.8 C (0.0 F) |
| 2004 | -17.8 C (0.0 F) |
| 2005 | -13.3 C (8.1 F) |
| 2006 | -16.1 C (3.0 F) |
| 2007 | -13.9 C (7.0 F) |
| 2008 | -13.9 C (7.0 F) |
| 2009 | -13.3 C (8.1 F) |
| 2010 | -15.6 C (3.9 F) |
| 2011 | -17.2 C (1.0 F) |
| 2012 | -11.1 C (12.0 F) |
| 2013 | -15.0 C (5.0 F) |
| 2014 | -18.9 C (-2.0 F) |
| 2015 | -17.2 C (1.0 F) |
| 2016 | -13.9 C (7.0 F) |
| 2017 | -14.4 C (6.1 F) |
| 2018 | -20.6 C (-5.1 F) |
| 2019 | -11.7 C (10.9 F) |
| 2020 | -10.6 C (12.9 F) |
| 2021 | -24.4 C (-11.9 F) |
| 2022 | -20.0 C (-4.0 F) |
| 2023 | -8.9 C (16.0 F) |
| 2024 | -21.1 C (-6.0 F) |
| 2025 | -17.2 C (1.0 F) |
| 2026 | -20.6 C (-5.1 F) |
Wettest day (Rx1day)
| Year | Wettest day (Rx1day) |
|---|---|
| 1904 | 43.2 mm (1.7 in) |
| 1905 | 52.1 mm (2.1 in) |
| 1906 | 71.1 mm (2.8 in) |
| 1907 | 60.7 mm (2.4 in) |
| 1908 | 66.0 mm (2.6 in) |
| 1909 | 78.7 mm (3.1 in) |
| 1910 | 101.6 mm (4.0 in) |
| 1911 | 95.3 mm (3.8 in) |
| 1912 | 57.7 mm (2.3 in) |
| 1913 | 64.8 mm (2.6 in) |
| 1914 | 86.4 mm (3.4 in) |
| 1915 | 100.1 mm (3.9 in) |
| 1916 | 97.0 mm (3.8 in) |
| 1917 | 118.4 mm (4.7 in) |
| 1918 | 124.7 mm (4.9 in) |
| 1919 | 56.1 mm (2.2 in) |
| 1920 | 73.7 mm (2.9 in) |
| 1921 | 93.5 mm (3.7 in) |
| 1922 | 36.1 mm (1.4 in) |
| 1923 | 60.5 mm (2.4 in) |
| 1924 | 66.0 mm (2.6 in) |
| 1925 | 88.9 mm (3.5 in) |
| 1926 | 152.4 mm (6.0 in) |
| 1927 | 133.1 mm (5.2 in) |
| 1928 | 129.5 mm (5.1 in) |
| 1929 | 59.4 mm (2.3 in) |
| 1930 | 58.4 mm (2.3 in) |
| 1931 | 64.8 mm (2.6 in) |
| 1932 | 50.8 mm (2.0 in) |
| 1933 | 57.9 mm (2.3 in) |
| 1934 | 41.1 mm (1.6 in) |
| 1935 | 107.2 mm (4.2 in) |
| 1936 | 66.0 mm (2.6 in) |
| 1937 | 88.9 mm (3.5 in) |
| 1938 | 85.9 mm (3.4 in) |
| 1939 | 83.8 mm (3.3 in) |
| 1940 | 59.7 mm (2.4 in) |
| 1941 | 76.2 mm (3.0 in) |
| 1942 | 93.0 mm (3.7 in) |
| 1943 | 88.9 mm (3.5 in) |
| 1944 | 47.0 mm (1.9 in) |
| 1945 | 77.2 mm (3.0 in) |
| 1946 | 79.2 mm (3.1 in) |
| 1947 | 50.3 mm (2.0 in) |
| 1948 | 95.8 mm (3.8 in) |
| 1949 | 108.0 mm (4.3 in) |
| 1950 | 96.5 mm (3.8 in) |
| 1951 | 74.9 mm (2.9 in) |
| 1952 | 79.0 mm (3.1 in) |
| 1953 | 44.5 mm (1.8 in) |
| 1954 | 43.7 mm (1.7 in) |
| 1955 | 49.5 mm (1.9 in) |
| 1956 | 67.8 mm (2.7 in) |
| 1957 | 101.6 mm (4.0 in) |
| 1958 | 108.0 mm (4.3 in) |
| 1959 | 65.0 mm (2.6 in) |
| 1960 | 57.4 mm (2.3 in) |
| 1961 | 51.3 mm (2.0 in) |
| 1962 | 78.0 mm (3.1 in) |
| 1963 | 77.2 mm (3.0 in) |
| 1964 | 84.6 mm (3.3 in) |
| 1965 | 61.5 mm (2.4 in) |
| 1966 | 69.1 mm (2.7 in) |
| 1967 | 92.5 mm (3.6 in) |
| 1968 | 63.5 mm (2.5 in) |
| 1969 | 66.5 mm (2.6 in) |
| 1970 | 89.7 mm (3.5 in) |
| 1971 | 63.0 mm (2.5 in) |
| 1972 | 75.9 mm (3.0 in) |
| 1973 | 64.8 mm (2.6 in) |
| 1974 | 74.7 mm (2.9 in) |
| 1975 | 84.8 mm (3.3 in) |
| 1976 | 47.8 mm (1.9 in) |
| 1977 | 59.4 mm (2.3 in) |
| 1978 | 44.5 mm (1.8 in) |
| 1979 | 52.1 mm (2.1 in) |
| 1980 | 55.9 mm (2.2 in) |
| 1981 | 37.1 mm (1.5 in) |
| 1982 | 313.9 mm (12.4 in) |
| 1983 | 47.0 mm (1.9 in) |
| 1984 | 97.3 mm (3.8 in) |
| 1985 | 76.2 mm (3.0 in) |
| 1986 | 83.8 mm (3.3 in) |
| 1987 | 57.2 mm (2.3 in) |
| 1988 | 72.1 mm (2.8 in) |
| 1989 | 81.3 mm (3.2 in) |
| 1990 | 159.0 mm (6.3 in) |
| 1991 | 71.1 mm (2.8 in) |
| 1992 | 71.1 mm (2.8 in) |
| 1993 | 111.8 mm (4.4 in) |
| 1994 | 109.2 mm (4.3 in) |
| 1995 | 51.3 mm (2.0 in) |
| 1996 | 68.6 mm (2.7 in) |
| 1997 | 129.5 mm (5.1 in) |
| 1998 | 51.1 mm (2.0 in) |
| 1999 | 53.3 mm (2.1 in) |
| 2000 | 50.8 mm (2.0 in) |
| 2001 | 53.3 mm (2.1 in) |
| 2002 | 95.8 mm (3.8 in) |
| 2003 | 127.0 mm (5.0 in) |
| 2004 | 54.6 mm (2.1 in) |
| 2005 | 62.2 mm (2.4 in) |
| 2006 | 111.8 mm (4.4 in) |
| 2007 | 102.1 mm (4.0 in) |
| 2008 | 182.9 mm (7.2 in) |
| 2009 | 110.0 mm (4.3 in) |
| 2010 | 190.5 mm (7.5 in) |
| 2011 | 113.8 mm (4.5 in) |
| 2012 | 50.5 mm (2.0 in) |
| 2013 | 122.2 mm (4.8 in) |
| 2014 | 61.0 mm (2.4 in) |
| 2015 | 83.8 mm (3.3 in) |
| 2016 | 58.4 mm (2.3 in) |
| 2017 | 74.9 mm (2.9 in) |
| 2018 | 66.0 mm (2.6 in) |
| 2019 | 74.9 mm (2.9 in) |
| 2020 | 80.3 mm (3.2 in) |
| 2021 | 99.1 mm (3.9 in) |
| 2022 | 72.4 mm (2.9 in) |
| 2023 | 91.4 mm (3.6 in) |
| 2024 | 101.6 mm (4.0 in) |
| 2025 | 101.6 mm (4.0 in) |
| 2026 | 81.3 mm (3.2 in) |
Wettest five days (Rx5day)
| Year | Wettest five days (Rx5day) |
|---|---|
| 1904 | 50.1 mm (2.0 in) |
| 1905 | 90.5 mm (3.6 in) |
| 1906 | 123.5 mm (4.9 in) |
| 1907 | 107.4 mm (4.2 in) |
| 1908 | 81.2 mm (3.2 in) |
| 1909 | 93.5 mm (3.7 in) |
| 1910 | 123.2 mm (4.9 in) |
| 1911 | 114.1 mm (4.5 in) |
| 1912 | 115.1 mm (4.5 in) |
| 1913 | 121.4 mm (4.8 in) |
| 1914 | 119.2 mm (4.7 in) |
| 1915 | 266.5 mm (10.5 in) |
| 1916 | 125.3 mm (4.9 in) |
| 1917 | 120.2 mm (4.7 in) |
| 1918 | 111.5 mm (4.4 in) |
| 1919 | 102.6 mm (4.0 in) |
| 1920 | 80.0 mm (3.1 in) |
| 1921 | 160.6 mm (6.3 in) |
| 1922 | 60.5 mm (2.4 in) |
| 1923 | 97.9 mm (3.9 in) |
| 1924 | 66.0 mm (2.6 in) |
| 1925 | 107.2 mm (4.2 in) |
| 1926 | 235.3 mm (9.3 in) |
| 1927 | 198.2 mm (7.8 in) |
| 1928 | 154.9 mm (6.1 in) |
| 1929 | 87.6 mm (3.4 in) |
| 1930 | 103.7 mm (4.1 in) |
| 1931 | 77.5 mm (3.1 in) |
| 1932 | 100.3 mm (3.9 in) |
| 1933 | 90.2 mm (3.6 in) |
| 1934 | 91.7 mm (3.6 in) |
| 1935 | 149.6 mm (5.9 in) |
| 1936 | 115.8 mm (4.6 in) |
| 1937 | 96.8 mm (3.8 in) |
| 1938 | 131.4 mm (5.2 in) |
| 1939 | 91.7 mm (3.6 in) |
| 1940 | 82.6 mm (3.3 in) |
| 1941 | 166.9 mm (6.6 in) |
| 1942 | 131.9 mm (5.2 in) |
| 1943 | 143.8 mm (5.7 in) |
| 1944 | 80.2 mm (3.2 in) |
| 1945 | 148.8 mm (5.9 in) |
| 1946 | 112.2 mm (4.4 in) |
| 1947 | 81.8 mm (3.2 in) |
| 1948 | 136.0 mm (5.4 in) |
| 1949 | 178.1 mm (7.0 in) |
| 1950 | 139.9 mm (5.5 in) |
| 1951 | 91.7 mm (3.6 in) |
| 1952 | 112.3 mm (4.4 in) |
| 1953 | 82.8 mm (3.3 in) |
| 1954 | 97.6 mm (3.8 in) |
| 1955 | 91.2 mm (3.6 in) |
| 1956 | 88.1 mm (3.5 in) |
| 1957 | 155.4 mm (6.1 in) |
| 1958 | 195.1 mm (7.7 in) |
| 1959 | 87.6 mm (3.4 in) |
| 1960 | 89.9 mm (3.5 in) |
| 1961 | 183.9 mm (7.2 in) |
| 1962 | 115.0 mm (4.5 in) |
| 1963 | 165.1 mm (6.5 in) |
| 1964 | 185.4 mm (7.3 in) |
| 1965 | 70.8 mm (2.8 in) |
| 1966 | 127.5 mm (5.0 in) |
| 1967 | 138.4 mm (5.4 in) |
| 1968 | 127.7 mm (5.0 in) |
| 1969 | 114.0 mm (4.5 in) |
| 1970 | 141.5 mm (5.6 in) |
| 1971 | 101.6 mm (4.0 in) |
| 1972 | 150.2 mm (5.9 in) |
| 1973 | 167.2 mm (6.6 in) |
| 1974 | 106.7 mm (4.2 in) |
| 1975 | 120.4 mm (4.7 in) |
| 1976 | 101.9 mm (4.0 in) |
| 1977 | 97.9 mm (3.9 in) |
| 1978 | 78.5 mm (3.1 in) |
| 1979 | 82.9 mm (3.3 in) |
| 1980 | 58.4 mm (2.3 in) |
| 1981 | 61.5 mm (2.4 in) |
| 1982 | 357.6 mm (14.1 in) |
| 1983 | 97.8 mm (3.9 in) |
| 1984 | 110.0 mm (4.3 in) |
| 1985 | 102.9 mm (4.1 in) |
| 1986 | 117.1 mm (4.6 in) |
| 1987 | 125.7 mm (4.9 in) |
| 1988 | 132.1 mm (5.2 in) |
| 1989 | 126.6 mm (5.0 in) |
| 1990 | 194.3 mm (7.6 in) |
| 1991 | 183.4 mm (7.2 in) |
| 1992 | 85.1 mm (3.4 in) |
| 1993 | 208.9 mm (8.2 in) |
| 1994 | 197.8 mm (7.8 in) |
| 1995 | 79.5 mm (3.1 in) |
| 1996 | 113.4 mm (4.5 in) |
| 1997 | 136.3 mm (5.4 in) |
| 1998 | 96.1 mm (3.8 in) |
| 1999 | 97.3 mm (3.8 in) |
| 2000 | 97.5 mm (3.8 in) |
| 2001 | 132.6 mm (5.2 in) |
| 2002 | 146.8 mm (5.8 in) |
| 2003 | 148.3 mm (5.8 in) |
| 2004 | 129.3 mm (5.1 in) |
| 2005 | 85.1 mm (3.4 in) |
| 2006 | 143.3 mm (5.6 in) |
| 2007 | 112.8 mm (4.4 in) |
| 2008 | 242.6 mm (9.6 in) |
| 2009 | 146.8 mm (5.8 in) |
| 2010 | 196.1 mm (7.7 in) |
| 2011 | 269.7 mm (10.6 in) |
| 2012 | 66.5 mm (2.6 in) |
| 2013 | 171.0 mm (6.7 in) |
| 2014 | 118.4 mm (4.7 in) |
| 2015 | 145.6 mm (5.7 in) |
| 2016 | 89.6 mm (3.5 in) |
| 2017 | 126.2 mm (5.0 in) |
| 2018 | 142.8 mm (5.6 in) |
| 2019 | 109.5 mm (4.3 in) |
| 2020 | 150.4 mm (5.9 in) |
| 2021 | 112.8 mm (4.4 in) |
| 2022 | 88.2 mm (3.5 in) |
| 2023 | 160.8 mm (6.3 in) |
| 2024 | 185.3 mm (7.3 in) |
| 2025 | 193.3 mm (7.6 in) |
| 2026 | 90.2 mm (3.6 in) |
Longest dry spell (CDD)
| Year | Longest dry spell (CDD) |
|---|---|
| 1904 | 90 days |
| 1905 | 14 days |
| 1906 | 21 days |
| 1907 | 20 days |
| 1908 | 25 days |
| 1909 | 27 days |
| 1910 | 21 days |
| 1911 | 27 days |
| 1912 | 30 days |
| 1913 | 18 days |
| 1914 | 33 days |
| 1915 | 24 days |
| 1916 | 19 days |
| 1917 | 27 days |
| 1918 | 19 days |
| 1919 | 25 days |
| 1920 | 29 days |
| 1921 | 18 days |
| 1922 | 15 days |
| 1923 | 18 days |
| 1924 | 24 days |
| 1925 | 26 days |
| 1926 | 15 days |
| 1927 | 22 days |
| 1928 | 17 days |
| 1929 | 26 days |
| 1930 | 81 days |
| 1931 | 25 days |
| 1932 | 18 days |
| 1933 | 28 days |
| 1934 | 25 days |
| 1935 | 19 days |
| 1936 | 29 days |
| 1937 | 19 days |
| 1938 | 33 days |
| 1939 | 35 days |
| 1940 | 20 days |
| 1941 | 17 days |
| 1942 | 21 days |
| 1943 | 30 days |
| 1944 | 23 days |
| 1945 | 17 days |
| 1946 | 19 days |
| 1947 | 22 days |
| 1948 | 30 days |
| 1949 | 27 days |
| 1950 | 26 days |
| 1951 | 16 days |
| 1952 | 34 days |
| 1953 | 23 days |
| 1954 | 22 days |
| 1955 | 27 days |
| 1956 | 17 days |
| 1957 | 21 days |
| 1958 | 18 days |
| 1959 | 20 days |
| 1960 | 29 days |
| 1961 | 21 days |
| 1962 | 23 days |
| 1963 | 44 days |
| 1964 | 31 days |
| 1965 | 17 days |
| 1966 | 25 days |
| 1967 | 28 days |
| 1968 | 16 days |
| 1969 | 25 days |
| 1970 | 16 days |
| 1971 | 27 days |
| 1972 | 15 days |
| 1973 | 20 days |
| 1974 | 19 days |
| 1975 | 34 days |
| 1976 | 21 days |
| 1977 | 23 days |
| 1978 | 17 days |
| 1979 | 25 days |
| 1980 | 32 days |
| 1981 | 26 days |
| 1982 | 19 days |
| 1983 | 18 days |
| 1984 | 17 days |
| 1985 | 23 days |
| 1986 | 29 days |
| 1987 | 21 days |
| 1988 | 13 days |
| 1989 | 39 days |
| 1990 | 13 days |
| 1991 | 15 days |
| 1992 | 21 days |
| 1993 | 18 days |
| 1994 | 20 days |
| 1995 | 39 days |
| 1996 | 25 days |
| 1997 | 18 days |
| 1998 | 32 days |
| 1999 | 36 days |
| 2000 | 18 days |
| 2001 | 15 days |
| 2002 | 19 days |
| 2003 | 22 days |
| 2004 | 26 days |
| 2005 | 16 days |
| 2006 | 17 days |
| 2007 | 20 days |
| 2008 | 16 days |
| 2009 | 26 days |
| 2010 | 29 days |
| 2011 | 22 days |
| 2012 | 23 days |
| 2013 | 34 days |
| 2014 | 21 days |
| 2015 | 34 days |
| 2016 | 22 days |
| 2017 | 18 days |
| 2018 | 18 days |
| 2019 | 15 days |
| 2020 | 24 days |
| 2021 | 15 days |
| 2022 | 35 days |
| 2023 | 21 days |
| 2024 | 29 days |
| 2025 | 31 days |
| 2026 | 20 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
100 years with a frostAcross 100 years with a frost, the median last spring frost at Mammoth Spring falls on 15 April and the median first autumn frost on 19 October, which leaves a median of 186 days between them.
In 1995 to 2025 the median growing season was 188 days. That is 1 day fewer than in 1907 to 1941.
Fitted over all years, the growing season changes by +0.2 days per decade at this station.
| Measure | Median, all years | Earliest period (1907 to 1941) | Recent period (1995 to 2025) | Recent against earliest | Fitted trend |
|---|---|---|---|---|---|
| Last spring frost | 15 April | 14 April | 15 April | 1 day later | +0.2 days per decade |
| First autumn frost | 19 October | 21 October | 24 October | 3 days later | +0.4 days per decade |
| Growing days | 186 days | 189 days | 188 days | 1 day fewer | +0.2 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
102 years, 1907 to 2025A day with at least 74.5 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 207.4 mm (8.2 in) of rain is expected about once in 100 years.
| Expected about once in | A day with at least | Note |
|---|---|---|
| 2 years | 74.5 mm (2.9 in) | |
| 5 years | 101.9 mm (4.0 in) | |
| 10 years | 122.9 mm (4.8 in) | |
| 25 years | 153.3 mm (6.0 in) | |
| 50 years | 179.0 mm (7.0 in) | |
| 100 years | 207.4 mm (8.2 in) |
The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 102 years of values from 1907 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: 313.9 mm (12.4 in) in 1982; 190.5 mm (7.5 in) in 2010; 182.9 mm (7.2 in) in 2008.
Station Changes
1 suspectedOne change was suspected in the annual mean temperature of Mammoth Spring, at 2010. Each is measured against neighbouring stations.
- Relative to 5 neighbouring stations, the station's annual mean temperature from 2010 ran 0.3 C (0.6 F) lower than in the years before (likely change).
| Year | Shift (C) | Shift (F) | Strength | Neighbours |
|---|---|---|---|---|
| 2010 | -0.3 | -0.6 | 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
2011 to 2025 against 1961 to 1990Over 2011 to 2025, Mammoth Spring had a mean temperature of 14.3 C (57.7 F) and 1,380.9 mm (54.4 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Lebanon (United States, 468 km away), Murfreesboro 5 N (United States, 467 km away) and Fayetteville Wtp (United States, 475 km away).
| Twin station | Country | Distance away | Mean temperature, 1961-1990 | Rain a year, 1961-1990 | Climate difference |
|---|---|---|---|---|---|
| Lebanon | United States | 468 km (291 mi) | 14.2 C (57.5 F) | 1,319.3 mm (51.9 in) | 0.45 |
| Murfreesboro 5 N | United States | 467 km (290 mi) | 14.5 C (58.1 F) | 1,348.4 mm (53.1 in) | 0.46 |
| Fayetteville Wtp | United States | 475 km (295 mi) | 14.2 C (57.5 F) | 1,367.7 mm (53.8 in) | 0.46 |
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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.
Data as of . Last revised (2026-10-13).