White Signal Threshold Days by Year (USC00299691)
15 fixed thresholds counted per year at White Signal (USC00299691): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for White Signal Thresholds
- White Signal: days with 10 mm (0.39 in) or more of precipitation in 73 years, most in 1986 with 23.
- White Signal: days with 25 mm (0.98 in) or more of precipitation in 66 years, most in 1983 with 6.
- White Signal: days with a maximum temperature at or above 30 C (86 F) in 54 years, most in 2020 with 107.
- White Signal: days with a maximum temperature at or above 90 F (32.2 C) in 54 years, most in 2020 with 72.
- 15 fixed thresholds have at least one qualifying day at White Signal.
Days at or above 30 C (86 F)
54 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1961 | 79 | 62.1 |
| 1962 | 70 | 62.1 |
| 1963 | 50 | 62.1 |
| 1964 | 67 | 62.1 |
| 1965 | 34 | 62.1 |
| 1966 | 67 | 62.1 |
| 1968 | 41 | 62.1 |
| 1969 | 89 | 62.1 |
| 1970 | 61 | 68 |
| 1971 | 63 | 68 |
| 1972 | 56 | 68 |
| 1973 | 75 | 68 |
| 1974 | 70 | 68 |
| 1975 | 68 | 68 |
| 1976 | 65 | 68 |
| 1978 | 86 | 68 |
| 1980 | 83 | 53.4 |
| 1981 | 50 | 53.4 |
| 1982 | 65 | 53.4 |
| 1983 | 65 | 53.4 |
| 1984 | 58 | 53.4 |
| 1985 | 47 | 53.4 |
| 1986 | 39 | 53.4 |
| 1987 | 44 | 53.4 |
| 1988 | 34 | 53.4 |
| 1989 | 49 | 53.4 |
| 1990 | 18 | 35.3 |
| 1991 | 14 | 35.3 |
| 1992 | 25 | 35.3 |
| 1993 | 48 | 35.3 |
| 1994 | 75 | 35.3 |
| 1998 | 47 | 35.3 |
| 1999 | 20 | 35.3 |
| 2000 | 68 | 56.9 |
| 2002 | 66 | 56.9 |
| 2003 | 65 | 56.9 |
| 2005 | 58 | 56.9 |
| 2007 | 51 | 56.9 |
| 2008 | 37 | 56.9 |
| 2009 | 53 | 56.9 |
| 2010 | 42 | 62.4 |
| 2011 | 62 | 62.4 |
| 2015 | 49 | 62.4 |
| 2016 | 46 | 62.4 |
| 2017 | 62 | 62.4 |
| 2018 | 87 | 62.4 |
| 2019 | 89 | 62.4 |
| 2020 | 107 | 87.1 |
| 2021 | 67 | 87.1 |
| 2022 | 55 | 87.1 |
| 2023 | 90 | 87.1 |
| 2024 | 100 | 87.1 |
| 2025 | 88 | 87.1 |
| 2026 | 103 | 87.1 |
| Year | First date | Last date |
|---|---|---|
| 1961 | 1961-05-09 | 1961-09-27 |
| 1962 | 1962-04-18 | 1962-09-23 |
| 1963 | 1963-05-14 | 1963-09-19 |
| 1964 | 1964-05-14 | 1964-09-08 |
| 1965 | 1965-05-21 | 1965-10-11 |
| 1966 | 1966-05-18 | 1966-09-24 |
| 1968 | 1968-05-27 | 1968-09-09 |
| 1969 | 1969-05-18 | 1969-09-25 |
| 1970 | 1970-05-16 | 1970-09-13 |
| 1971 | 1971-06-04 | 1971-09-16 |
| 1972 | 1972-06-11 | 1972-10-04 |
| 1973 | 1973-05-29 | 1973-09-21 |
| 1974 | 1974-05-12 | 1974-09-11 |
| 1975 | 1975-06-01 | 1975-09-02 |
| 1976 | 1976-05-14 | 1976-09-04 |
| 1978 | 1978-05-12 | 1978-10-13 |
| 1980 | 1980-05-20 | 1980-10-05 |
| 1981 | 1981-04-30 | 1981-09-20 |
| 1982 | 1982-06-01 | 1982-09-25 |
| 1983 | 1983-05-24 | 1983-09-18 |
| 1984 | 1984-05-11 | 1984-09-14 |
| 1985 | 1985-06-06 | 1985-09-01 |
| 1986 | 1986-05-20 | 1986-08-22 |
| 1987 | 1987-06-02 | 1987-08-19 |
| 1988 | 1988-05-14 | 1988-09-08 |
| 1989 | 1989-04-20 | 1989-08-13 |
| 1990 | 1990-06-03 | 1990-06-28 |
| 1991 | 1991-06-17 | 1991-08-23 |
| 1992 | 1992-06-02 | 1992-08-19 |
| 1993 | 1993-05-30 | 1993-08-24 |
| 1994 | 1994-05-29 | 1994-08-29 |
| 1998 | 1998-05-30 | 1998-09-15 |
| 1999 | 1999-06-07 | 1999-09-08 |
| 2000 | 2000-04-26 | 2000-10-01 |
| 2002 | 2002-05-29 | 2002-09-06 |
| 2003 | 2003-05-17 | 2003-10-02 |
| 2005 | 2005-05-19 | 2005-09-27 |
| 2007 | 2007-06-02 | 2007-08-24 |
| 2008 | 2008-05-19 | 2008-08-22 |
| 2009 | 2009-05-07 | 2009-08-21 |
| 2010 | 2010-05-29 | 2010-09-16 |
| 2011 | 2011-06-01 | 2011-09-08 |
| 2015 | 2015-06-02 | 2015-10-03 |
| 2016 | 2016-06-03 | 2016-09-21 |
| 2017 | 2017-05-24 | 2017-10-23 |
| 2018 | 2018-05-07 | 2018-09-29 |
| 2019 | 2019-06-01 | 2019-09-13 |
| 2020 | 2020-05-06 | 2020-10-15 |
| 2021 | 2021-05-06 | 2021-09-18 |
| 2022 | 2022-05-14 | 2022-09-18 |
| 2023 | 2023-06-16 | 2023-10-20 |
| 2024 | 2024-05-27 | 2024-10-12 |
| 2025 | 2025-05-21 | 2025-09-11 |
| 2026 | 2026-03-20 | 2026-09-14 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 54 | 107 | 2020 | 103 |
| 35 C (95 F): Days | 46 | 31 | 2023 | 22 |
| 90 F (32.2 C): Days | 54 | 72 | 2020 | 71 |
| 100 F (37.8 C): Days | 12 | 6 | 2023 | 1 |
| 0 C (32 F): Ice days (max | 25 | 7 | 1987 | 1 |
| 0 C (32 F): Frost days (min | 51 | 193 | 1976 | 39 |
| -10 C (14 F): Days with min | 50 | 22 | 1964 | 2 |
| -20 C (-4 F): Days with min | 5 | 3 | 1971 | 1 |
| 20 C (68 F): Tropical nights (min | 46 | 21 | 2018 | 19 |
| 25 C (77 F): Days with min | 9 | 3 | 1963 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 73 | 23 | 1986 | 12 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 66 | 6 | 1983 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 9 | 1 | 1952 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 43 | 6 | 1973 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 9 | 1 | 1949 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1961.
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).