Clearlake 4 SE Threshold Days by Year (USC00041806)
16 fixed thresholds counted per year at Clearlake 4 SE (USC00041806): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Clearlake 4 SE Thresholds
- Clearlake 4 SE: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1983 with 47.
- Clearlake 4 SE: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1983 with 19.
- Clearlake 4 SE: days with a maximum temperature at or above 30 C (86 F) in 45 years, most in 1974 with 124.
- Clearlake 4 SE: days with a maximum temperature at or above 35 C (95 F) in 45 years, most in 1967 with 73.
- 16 fixed thresholds have at least one qualifying day at Clearlake 4 SE.
Days at or above 30 C (86 F)
45 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1955 | 97 | 96.5 |
| 1956 | 96 | 96.5 |
| 1961 | 99 | 103.4 |
| 1962 | 79 | 103.4 |
| 1964 | 112 | 103.4 |
| 1965 | 102 | 103.4 |
| 1966 | 105 | 103.4 |
| 1967 | 116 | 103.4 |
| 1969 | 111 | 103.4 |
| 1970 | 121 | 103.8 |
| 1971 | 100 | 103.8 |
| 1972 | 111 | 103.8 |
| 1973 | 112 | 103.8 |
| 1974 | 124 | 103.8 |
| 1975 | 102 | 103.8 |
| 1976 | 83 | 103.8 |
| 1977 | 84 | 103.8 |
| 1978 | 94 | 103.8 |
| 1979 | 107 | 103.8 |
| 1980 | 96 | 92.3 |
| 1981 | 109 | 92.3 |
| 1982 | 88 | 92.3 |
| 1983 | 70 | 92.3 |
| 1984 | 95 | 92.3 |
| 1987 | 97 | 92.3 |
| 1988 | 98 | 92.3 |
| 1989 | 85 | 92.3 |
| 1990 | 77 | 82.2 |
| 1991 | 101 | 82.2 |
| 1992 | 98 | 82.2 |
| 1993 | 71 | 82.2 |
| 1994 | 85 | 82.2 |
| 1995 | 80 | 82.2 |
| 1996 | 83 | 82.2 |
| 1997 | 76 | 82.2 |
| 1998 | 67 | 82.2 |
| 1999 | 84 | 82.2 |
| 2000 | 86 | 92 |
| 2002 | 109 | 92 |
| 2003 | 97 | 92 |
| 2004 | 94 | 92 |
| 2005 | 70 | 92 |
| 2006 | 96 | 92 |
| 2025 | 100 | 102 |
| 2026 | 104 | 102 |
| Year | First date | Last date |
|---|---|---|
| 1955 | 1955-05-11 | 1955-11-09 |
| 1956 | 1956-05-16 | 1956-10-06 |
| 1961 | 1961-05-16 | 1961-10-19 |
| 1962 | 1962-04-14 | 1962-10-02 |
| 1964 | 1964-04-15 | 1964-10-23 |
| 1965 | 1965-04-27 | 1965-10-27 |
| 1966 | 1966-04-01 | 1966-11-02 |
| 1967 | 1967-05-16 | 1967-11-03 |
| 1969 | 1969-05-07 | 1969-10-22 |
| 1970 | 1970-05-04 | 1970-10-14 |
| 1971 | 1971-05-11 | 1971-10-14 |
| 1972 | 1972-05-02 | 1972-10-06 |
| 1973 | 1973-04-26 | 1973-10-01 |
| 1974 | 1974-05-06 | 1974-10-20 |
| 1975 | 1975-05-13 | 1975-10-05 |
| 1976 | 1976-05-08 | 1976-10-14 |
| 1977 | 1977-04-16 | 1977-10-18 |
| 1978 | 1978-05-09 | 1978-10-24 |
| 1979 | 1979-05-13 | 1979-10-06 |
| 1980 | 1980-05-18 | 1980-10-10 |
| 1981 | 1981-04-23 | 1981-10-02 |
| 1982 | 1982-05-06 | 1982-09-14 |
| 1983 | 1983-05-21 | 1983-10-05 |
| 1984 | 1984-05-20 | 1984-10-08 |
| 1987 | 1987-04-26 | 1987-10-08 |
| 1988 | 1988-04-11 | 1988-10-21 |
| 1989 | 1989-04-05 | 1989-10-09 |
| 1990 | 1990-04-13 | 1990-10-04 |
| 1991 | 1991-05-22 | 1991-10-19 |
| 1992 | 1992-05-02 | 1992-10-12 |
| 1993 | 1993-05-09 | 1993-10-03 |
| 1994 | 1994-05-10 | 1994-10-02 |
| 1995 | 1995-05-29 | 1995-10-15 |
| 1996 | 1996-04-30 | 1996-10-10 |
| 1997 | 1997-05-11 | 1997-10-17 |
| 1998 | 1998-06-15 | 1998-09-17 |
| 1999 | 1999-05-23 | 1999-10-15 |
| 2000 | 2000-04-03 | 2000-10-08 |
| 2002 | 2002-05-30 | 2002-10-15 |
| 2003 | 2003-05-22 | 2003-10-29 |
| 2004 | 2004-04-27 | 2004-10-15 |
| 2005 | 2005-05-25 | 2005-10-01 |
| 2006 | 2006-04-29 | 2006-09-28 |
| 2025 | 2025-05-10 | 2025-10-08 |
| 2026 | 2026-03-17 | 2026-10-08 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 45 | 124 | 1974 | 104 |
| 35 C (95 F): Days | 45 | 73 | 1967 | 39 |
| 40 C (104 F): Days | 30 | 15 | 1972 | 3 |
| 45 C (113 F): Days | 2 | 1 | 1972 | 1 |
| 90 F (32.2 C): Days | 45 | 107 | 1970 | 82 |
| 100 F (37.8 C): Days | 42 | 36 | 1967 | 13 |
| 110 F (43.3 C): Days | 8 | 3 | 1955 | 1 |
| 0 C (32 F): Frost days (min | 27 | 131 | 1971 | 24 |
| -10 C (14 F): Days with min | 7 | 7 | 1990 | 7 |
| 20 C (68 F): Tropical nights (min | 6 | 6 | 1961 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 46 | 47 | 1983 | 6 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 46 | 19 | 1983 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 34 | 7 | 1983 | 4 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 5 | 3 | 1995 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 4 | 2 | 1973 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 2 | 1 | 1973 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1955.
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).