Twitchell Dam Threshold Days by Year (USC00049111)
13 fixed thresholds counted per year at Twitchell Dam (USC00049111): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Twitchell Dam Thresholds
- Twitchell Dam: days with 10 mm (0.39 in) or more of precipitation in 50 years, most in 1983 with 30.
- Twitchell Dam: days with 25 mm (0.98 in) or more of precipitation in 49 years, most in 2023 with 13.
- Twitchell Dam: days with a maximum temperature at or above 30 C (86 F) in 41 years, most in 2020 with 72.
- Twitchell Dam: days with a maximum temperature at or above 90 F (32.2 C) in 41 years, most in 2009 with 44.
- 13 fixed thresholds have at least one qualifying day at Twitchell Dam.
Days at or above 30 C (86 F)
41 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1963 | 19 | 29.7 |
| 1964 | 25 | 29.7 |
| 1965 | 32 | 29.7 |
| 1966 | 38 | 29.7 |
| 1967 | 40 | 29.7 |
| 1969 | 24 | 29.7 |
| 1974 | 23 | 29.5 |
| 1975 | 18 | 29.5 |
| 1976 | 41 | 29.5 |
| 1977 | 30 | 29.5 |
| 1978 | 38 | 29.5 |
| 1979 | 27 | 29.5 |
| 1981 | 35 | 28.4 |
| 1982 | 23 | 28.4 |
| 1983 | 25 | 28.4 |
| 1984 | 45 | 28.4 |
| 1985 | 35 | 28.4 |
| 1986 | 14 | 28.4 |
| 1987 | 22 | 28.4 |
| 1990 | 39 | 34 |
| 1991 | 29 | 34 |
| 2003 | 47 | 57.2 |
| 2006 | 62 | 57.2 |
| 2007 | 46 | 57.2 |
| 2008 | 65 | 57.2 |
| 2009 | 66 | 57.2 |
| 2011 | 23 | 37.5 |
| 2012 | 46 | 37.5 |
| 2013 | 57 | 37.5 |
| 2014 | 18 | 37.5 |
| 2015 | 33 | 37.5 |
| 2016 | 39 | 37.5 |
| 2018 | 37 | 37.5 |
| 2019 | 47 | 37.5 |
| 2020 | 72 | 49.6 |
| 2021 | 47 | 49.6 |
| 2022 | 55 | 49.6 |
| 2023 | 36 | 49.6 |
| 2024 | 47 | 49.6 |
| 2025 | 30 | 49.6 |
| 2026 | 60 | 49.6 |
| Year | First date | Last date |
|---|---|---|
| 1963 | 1963-02-03 | 1963-09-29 |
| 1964 | 1964-04-13 | 1964-10-21 |
| 1965 | 1965-04-25 | 1965-10-29 |
| 1966 | 1966-03-31 | 1966-11-02 |
| 1967 | 1967-05-14 | 1967-11-01 |
| 1969 | 1969-05-28 | 1969-11-01 |
| 1974 | 1974-06-03 | 1974-10-18 |
| 1975 | 1975-05-12 | 1975-12-08 |
| 1976 | 1976-01-17 | 1976-11-19 |
| 1977 | 1977-07-20 | 1977-11-29 |
| 1978 | 1978-05-12 | 1978-11-08 |
| 1979 | 1979-05-12 | 1979-09-19 |
| 1981 | 1981-04-28 | 1981-10-24 |
| 1982 | 1982-06-26 | 1982-10-23 |
| 1983 | 1983-05-18 | 1983-10-27 |
| 1984 | 1984-04-13 | 1984-09-29 |
| 1985 | 1985-04-01 | 1985-11-06 |
| 1986 | 1986-04-20 | 1986-11-12 |
| 1987 | 1987-04-21 | 1987-10-26 |
| 1990 | 1990-03-20 | 1990-11-23 |
| 1991 | 1991-06-30 | 1991-11-07 |
| 2003 | 2003-01-31 | 2003-10-28 |
| 2006 | 2006-02-08 | 2006-11-19 |
| 2007 | 2007-03-11 | 2007-11-15 |
| 2008 | 2008-04-12 | 2008-11-18 |
| 2009 | 2009-01-14 | 2009-11-01 |
| 2011 | 2011-03-31 | 2011-10-29 |
| 2012 | 2012-05-06 | 2012-11-06 |
| 2013 | 2013-03-01 | 2013-10-16 |
| 2014 | 2014-04-29 | 2014-10-12 |
| 2015 | 2015-03-13 | 2015-10-31 |
| 2016 | 2016-04-05 | 2016-11-11 |
| 2018 | 2018-03-31 | 2018-11-05 |
| 2019 | 2019-06-08 | 2019-11-19 |
| 2020 | 2020-04-23 | 2020-11-16 |
| 2021 | 2021-01-14 | 2021-11-30 |
| 2022 | 2022-02-09 | 2022-10-30 |
| 2023 | 2023-07-15 | 2023-11-03 |
| 2024 | 2024-06-04 | 2024-10-23 |
| 2025 | 2025-02-27 | 2025-12-10 |
| 2026 | 2026-01-18 | 2026-10-07 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 41 | 72 | 2020 | 60 |
| 35 C (95 F): Days | 40 | 28 | 2020 | 13 |
| 40 C (104 F): Days | 24 | 6 | 2020 | 2 |
| 45 C (113 F): Days | 1 | 1 | 2020 | 1 |
| 90 F (32.2 C): Days | 41 | 44 | 2009 | 30 |
| 100 F (37.8 C): Days | 36 | 13 | 2020 | 5 |
| 110 F (43.3 C): Days | 5 | 2 | 2020 | 1 |
| 0 C (32 F): Frost days (min | 40 | 77 | 2015 | 8 |
| 20 C (68 F): Tropical nights (min | 17 | 8 | 2020 | 3 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 50 | 30 | 1983 | 10 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 49 | 13 | 2023 | 2 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 22 | 3 | 1978 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 1 | 1 | 2014 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1963.
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).