Wisley Threshold Days by Year (UKE00156884)
12 fixed thresholds counted per year at Wisley (UKE00156884): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Wisley Thresholds
- Wisley: nights with a minimum temperature at or below 0 C (32 F) in 106 years, most in 1929 with 97.
- Wisley: days with 10 mm (0.39 in) or more of precipitation in 106 years, most in 2014 with 33.
- Wisley: days with 25 mm (0.98 in) or more of precipitation in 87 years, most in 1927 with 5.
- Wisley: days with a maximum temperature at or above 30 C (86 F) in 68 years, most in 1976 with 18.
- 12 fixed thresholds have at least one qualifying day at Wisley.
Days at or above 30 C (86 F)
68 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1911 | 12 | 3.2 |
| 1912 | 3 | 3.2 |
| 1914 | 1 | 3.2 |
| 1917 | 1 | 3.2 |
| 1918 | 1 | 3.2 |
| 1919 | 1 | 3.2 |
| 1921 | 8 | 4.1 |
| 1922 | 2 | 4.1 |
| 1923 | 6 | 4.1 |
| 1925 | 1 | 4.1 |
| 1926 | 1 | 4.1 |
| 1928 | 5 | 4.1 |
| 1929 | 6 | 4.1 |
| 1930 | 3 | 2.9 |
| 1932 | 5 | 2.9 |
| 1933 | 7 | 2.9 |
| 1934 | 2 | 2.9 |
| 1937 | 1 | 2.9 |
| 1938 | 1 | 2.9 |
| 1939 | 1 | 2.9 |
| 1940 | 1 | 4.6 |
| 1941 | 7 | 4.6 |
| 1942 | 2 | 4.6 |
| 1943 | 2 | 4.6 |
| 1944 | 3 | 4.6 |
| 1947 | 8 | 4.6 |
| 1948 | 4 | 4.6 |
| 1949 | 10 | 4.6 |
| 1950 | 2 | 2.2 |
| 1952 | 1 | 2.2 |
| 1953 | 2 | 2.2 |
| 1955 | 2 | 2.2 |
| 1957 | 4 | 2.2 |
| 1959 | 2 | 2.2 |
| 1961 | 3 | 2 |
| 1969 | 1 | 2 |
| 1970 | 1 | 5.2 |
| 1973 | 1 | 5.2 |
| 1975 | 5 | 5.2 |
| 1976 | 18 | 5.2 |
| 1979 | 1 | 5.2 |
| 1983 | 8 | 6 |
| 1989 | 4 | 6 |
| 1990 | 7 | 4.3 |
| 1994 | 4 | 4.3 |
| 1995 | 11 | 4.3 |
| 1996 | 3 | 4.3 |
| 1997 | 1 | 4.3 |
| 1998 | 1 | 4.3 |
| 1999 | 3 | 4.3 |
| 2001 | 5 | 6.3 |
| 2002 | 1 | 6.3 |
| 2006 | 13 | 6.3 |
| 2010 | 2 | 5.1 |
| 2011 | 1 | 5.1 |
| 2013 | 6 | 5.1 |
| 2015 | 1 | 5.1 |
| 2016 | 3 | 5.1 |
| 2017 | 5 | 5.1 |
| 2018 | 16 | 5.1 |
| 2019 | 7 | 5.1 |
| 2020 | 10 | 10.4 |
| 2021 | 3 | 10.4 |
| 2022 | 10 | 10.4 |
| 2023 | 8 | 10.4 |
| 2024 | 5 | 10.4 |
| 2025 | 13 | 10.4 |
| 2026 | 24 | 10.4 |
| Year | First date | Last date |
|---|---|---|
| 1911 | 1911-07-08 | 1911-09-08 |
| 1912 | 1912-07-11 | 1912-07-15 |
| 1914 | 1914-06-30 | 1914-06-30 |
| 1917 | 1917-06-16 | 1917-06-16 |
| 1918 | 1918-08-21 | 1918-08-21 |
| 1919 | 1919-08-08 | 1919-08-08 |
| 1921 | 1921-07-08 | 1921-07-19 |
| 1922 | 1922-05-21 | 1922-05-23 |
| 1923 | 1923-07-05 | 1923-08-08 |
| 1925 | 1925-06-10 | 1925-06-10 |
| 1926 | 1926-07-13 | 1926-07-13 |
| 1928 | 1928-07-11 | 1928-07-21 |
| 1929 | 1929-07-15 | 1929-09-07 |
| 1930 | 1930-08-26 | 1930-08-28 |
| 1932 | 1932-08-10 | 1932-08-19 |
| 1933 | 1933-06-04 | 1933-08-28 |
| 1934 | 1934-06-16 | 1934-06-17 |
| 1937 | 1937-08-05 | 1937-08-05 |
| 1938 | 1938-07-31 | 1938-07-31 |
| 1939 | 1939-06-06 | 1939-06-06 |
| 1940 | 1940-09-03 | 1940-09-03 |
| 1941 | 1941-06-20 | 1941-07-11 |
| 1942 | 1942-06-05 | 1942-08-27 |
| 1943 | 1943-07-29 | 1943-07-30 |
| 1944 | 1944-05-28 | 1944-08-15 |
| 1947 | 1947-05-29 | 1947-08-17 |
| 1948 | 1948-07-25 | 1948-07-29 |
| 1949 | 1949-06-27 | 1949-09-04 |
| 1950 | 1950-06-04 | 1950-06-05 |
| 1952 | 1952-06-30 | 1952-06-30 |
| 1953 | 1953-05-24 | 1953-08-11 |
| 1955 | 1955-07-16 | 1955-08-21 |
| 1957 | 1957-06-27 | 1957-07-05 |
| 1959 | 1959-07-04 | 1959-07-07 |
| 1961 | 1961-06-29 | 1961-08-28 |
| 1969 | 1969-07-15 | 1969-07-15 |
| 1970 | 1970-07-06 | 1970-07-06 |
| 1973 | 1973-08-15 | 1973-08-15 |
| 1975 | 1975-07-29 | 1975-08-07 |
| 1976 | 1976-06-22 | 1976-08-25 |
| 1979 | 1979-07-26 | 1979-07-26 |
| 1983 | 1983-07-10 | 1983-07-29 |
| 1989 | 1989-07-05 | 1989-07-22 |
| 1990 | 1990-07-14 | 1990-08-03 |
| 1994 | 1994-07-11 | 1994-08-02 |
| 1995 | 1995-06-29 | 1995-08-18 |
| 1996 | 1996-06-06 | 1996-08-18 |
| 1997 | 1997-08-07 | 1997-08-07 |
| 1998 | 1998-08-09 | 1998-08-09 |
| 1999 | 1999-07-30 | 1999-08-01 |
| 2001 | 2001-06-25 | 2001-08-24 |
| 2002 | 2002-07-28 | 2002-07-28 |
| 2006 | 2006-06-11 | 2006-07-25 |
| 2010 | 2010-06-26 | 2010-07-08 |
| 2011 | 2011-06-26 | 2011-06-26 |
| 2013 | 2013-07-12 | 2013-07-31 |
| 2015 | 2015-06-30 | 2015-06-30 |
| 2016 | 2016-07-18 | 2016-09-12 |
| 2017 | 2017-06-17 | 2017-07-05 |
| 2018 | 2018-06-30 | 2018-08-06 |
| 2019 | 2019-06-28 | 2019-08-26 |
| 2020 | 2020-06-23 | 2020-08-11 |
| 2021 | 2021-07-17 | 2021-07-19 |
| 2022 | 2022-06-16 | 2022-08-13 |
| 2023 | 2023-06-09 | 2023-09-08 |
| 2024 | 2024-06-25 | 2024-08-11 |
| 2025 | 2025-06-18 | 2025-08-14 |
| 2026 | 2026-05-23 | 2026-08-13 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 68 | 18 | 1976 | 24 |
| 35 C (95 F): Days | 8 | 3 | 2020 | 4 |
| 90 F (32.2 C): Days | 32 | 8 | 1976 | 16 |
| 100 F (37.8 C): Days | 1 | 1 | 2022 | 1 |
| 0 C (32 F): Ice days (max | 54 | 22 | 1947 | 1 |
| 0 C (32 F): Frost days (min | 106 | 97 | 1929 | 22 |
| -10 C (14 F): Days with min | 24 | 6 | 1963 | 1 |
| 20 C (68 F): Tropical nights (min | 7 | 1 | 1921 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 106 | 33 | 2014 | 7 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 87 | 5 | 1927 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 11 | 1 | 1924 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 2 | 1 | 1924 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1911.
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). Threshold counts are computed by this site.
Data as of . Last revised (2026-10-17).