Jess Valley Threshold Days by Year (USC00044374)
15 fixed thresholds counted per year at Jess Valley (USC00044374): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Jess Valley Thresholds
- Jess Valley: days with 10 mm (0.39 in) or more of precipitation in 69 years, most in 1995 with 26.
- Jess Valley: days with a maximum temperature at or above 30 C (86 F) in 61 years, most in 1991 with 58.
- Jess Valley: days with a maximum temperature at or below 0 C (32 F) in 61 years, most in 1982 with 43.
- Jess Valley: days with 10 cm (3.9 in) or more of snowfall in 56 years, most in 1971 with 14.
- 15 fixed thresholds have at least one qualifying day at Jess Valley.
Days at or above 30 C (86 F)
61 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1949 | 10 | 10 |
| 1950 | 24 | 15 |
| 1951 | 22 | 15 |
| 1952 | 9 | 15 |
| 1953 | 8 | 15 |
| 1954 | 5 | 15 |
| 1955 | 17 | 15 |
| 1956 | 6 | 15 |
| 1958 | 6 | 15 |
| 1959 | 38 | 15 |
| 1960 | 38 | 31.8 |
| 1961 | 48 | 31.8 |
| 1962 | 28 | 31.8 |
| 1963 | 15 | 31.8 |
| 1964 | 24 | 31.8 |
| 1965 | 12 | 31.8 |
| 1966 | 30 | 31.8 |
| 1967 | 53 | 31.8 |
| 1968 | 33 | 31.8 |
| 1969 | 37 | 31.8 |
| 1970 | 45 | 32.6 |
| 1971 | 41 | 32.6 |
| 1972 | 33 | 32.6 |
| 1974 | 46 | 32.6 |
| 1975 | 23 | 32.6 |
| 1976 | 28 | 32.6 |
| 1977 | 21 | 32.6 |
| 1978 | 28 | 32.6 |
| 1979 | 28 | 32.6 |
| 1980 | 16 | 20.7 |
| 1981 | 24 | 20.7 |
| 1982 | 7 | 20.7 |
| 1983 | 5 | 20.7 |
| 1984 | 8 | 20.7 |
| 1985 | 16 | 20.7 |
| 1986 | 35 | 20.7 |
| 1987 | 33 | 20.7 |
| 1988 | 51 | 20.7 |
| 1989 | 12 | 20.7 |
| 1990 | 33 | 25.9 |
| 1991 | 58 | 25.9 |
| 1993 | 21 | 25.9 |
| 1994 | 26 | 25.9 |
| 1995 | 10 | 25.9 |
| 1997 | 17 | 25.9 |
| 1998 | 29 | 25.9 |
| 1999 | 13 | 25.9 |
| 2000 | 28 | 34.8 |
| 2001 | 35 | 34.8 |
| 2002 | 38 | 34.8 |
| 2003 | 44 | 34.8 |
| 2004 | 31 | 34.8 |
| 2007 | 33 | 34.8 |
| 2010 | 27 | 32.9 |
| 2011 | 28 | 32.9 |
| 2012 | 28 | 32.9 |
| 2013 | 37 | 32.9 |
| 2014 | 35 | 32.9 |
| 2015 | 24 | 32.9 |
| 2016 | 34 | 32.9 |
| 2017 | 50 | 32.9 |
| Year | First date | Last date |
|---|---|---|
| 1949 | 1949-07-09 | 1949-08-31 |
| 1950 | 1950-06-29 | 1950-09-03 |
| 1951 | 1951-06-30 | 1951-09-16 |
| 1952 | 1952-07-09 | 1952-09-02 |
| 1953 | 1953-07-11 | 1953-09-11 |
| 1954 | 1954-07-12 | 1954-08-01 |
| 1955 | 1955-06-08 | 1955-09-10 |
| 1956 | 1956-06-27 | 1956-07-25 |
| 1958 | 1958-07-28 | 1958-08-15 |
| 1959 | 1959-06-18 | 1959-09-12 |
| 1960 | 1960-07-04 | 1960-09-18 |
| 1961 | 1961-06-13 | 1961-08-23 |
| 1962 | 1962-07-07 | 1962-09-17 |
| 1963 | 1963-07-27 | 1963-09-27 |
| 1964 | 1964-07-07 | 1964-08-25 |
| 1965 | 1965-07-05 | 1965-08-07 |
| 1966 | 1966-06-15 | 1966-09-05 |
| 1967 | 1967-06-29 | 1967-09-28 |
| 1968 | 1968-06-16 | 1968-09-01 |
| 1969 | 1969-06-03 | 1969-09-07 |
| 1970 | 1970-06-02 | 1970-09-28 |
| 1971 | 1971-07-14 | 1971-09-13 |
| 1972 | 1972-05-27 | 1972-08-28 |
| 1974 | 1974-06-11 | 1974-09-24 |
| 1975 | 1975-07-06 | 1975-09-08 |
| 1976 | 1976-06-28 | 1976-09-10 |
| 1977 | 1977-06-05 | 1977-08-01 |
| 1978 | 1978-07-10 | 1978-08-30 |
| 1979 | 1979-06-28 | 1979-09-17 |
| 1980 | 1980-07-20 | 1980-08-11 |
| 1981 | 1981-06-23 | 1981-08-13 |
| 1982 | 1982-07-29 | 1982-08-24 |
| 1983 | 1983-07-30 | 1983-08-07 |
| 1984 | 1984-07-04 | 1984-08-08 |
| 1985 | 1985-06-17 | 1985-08-24 |
| 1986 | 1986-05-27 | 1986-09-06 |
| 1987 | 1987-06-24 | 1987-09-22 |
| 1988 | 1988-06-17 | 1988-09-09 |
| 1989 | 1989-07-06 | 1989-08-07 |
| 1990 | 1990-06-23 | 1990-09-10 |
| 1991 | 1991-07-02 | 1991-09-29 |
| 1993 | 1993-07-31 | 1993-10-01 |
| 1994 | 1994-07-08 | 1994-08-26 |
| 1995 | 1995-06-25 | 1995-08-06 |
| 1997 | 1997-07-05 | 1997-08-15 |
| 1998 | 1998-07-06 | 1998-09-04 |
| 1999 | 1999-07-09 | 1999-09-08 |
| 2000 | 2000-06-15 | 2000-09-20 |
| 2001 | 2001-06-21 | 2001-08-31 |
| 2002 | 2002-06-26 | 2002-09-23 |
| 2003 | 2003-05-24 | 2003-09-30 |
| 2004 | 2004-07-05 | 2004-09-11 |
| 2007 | 2007-07-04 | 2007-09-13 |
| 2010 | 2010-06-28 | 2010-10-02 |
| 2011 | 2011-07-06 | 2011-09-24 |
| 2012 | 2012-06-17 | 2012-09-20 |
| 2013 | 2013-06-09 | 2013-09-15 |
| 2014 | 2014-06-10 | 2014-09-21 |
| 2015 | 2015-06-25 | 2015-09-13 |
| 2016 | 2016-06-05 | 2016-09-28 |
| 2017 | 2017-06-19 | 2017-09-12 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 61 | 58 | 1991 | 50 |
| 35 C (95 F): Days | 32 | 8 | 1959 | 8 |
| 40 C (104 F): Days | 1 | 1 | 1972 | 1 |
| 90 F (32.2 C): Days | 54 | 27 | 1961 | 22 |
| 100 F (37.8 C): Days | 3 | 2 | 1972 | 2 |
| 0 C (32 F): Ice days (max | 61 | 43 | 1982 | 3 |
| 0 C (32 F): Frost days (min | 55 | 222 | 1982 | 68 |
| -10 C (14 F): Days with min | 55 | 61 | 1985 | 1 |
| -20 C (-4 F): Days with min | 36 | 13 | 1949 | 2 |
| -30 C (-22 F): Days with min | 5 | 4 | 1990 | 4 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 69 | 26 | 1995 | 6 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 48 | 7 | 1995 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 6 | 1 | 1962 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 56 | 14 | 1971 | 1 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 14 | 2 | 1965 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.
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 (2026-10-12).