Caldwell 6 NW Threshold Days by Year (USC00331178)
17 fixed thresholds counted per year at Caldwell 6 NW (USC00331178): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Caldwell 6 NW Thresholds
- Caldwell 6 NW: nights with a minimum temperature at or below 0 C (32 F) in 46 years, most in 1987 with 170.
- Caldwell 6 NW: nights with a minimum temperature at or below -10 C (14 F) in 46 years, most in 1978 with 47.
- Caldwell 6 NW: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1937 with 47.
- Caldwell 6 NW: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1964 with 13.
- 17 fixed thresholds have at least one qualifying day at Caldwell 6 NW.
Days at or above 30 C (86 F)
45 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1936 | 79 | 55.5 |
| 1937 | 42 | 55.5 |
| 1938 | 42 | 55.5 |
| 1939 | 59 | 55.5 |
| 1940 | 53 | 63.1 |
| 1941 | 68 | 63.1 |
| 1942 | 58 | 63.1 |
| 1943 | 63 | 63.1 |
| 1944 | 77 | 63.1 |
| 1945 | 68 | 63.1 |
| 1946 | 53 | 63.1 |
| 1947 | 65 | 63.1 |
| 1956 | 24 | 38.3 |
| 1957 | 43 | 38.3 |
| 1958 | 17 | 38.3 |
| 1959 | 69 | 38.3 |
| 1960 | 30 | 37.9 |
| 1961 | 33 | 37.9 |
| 1962 | 43 | 37.9 |
| 1963 | 23 | 37.9 |
| 1964 | 43 | 37.9 |
| 1965 | 47 | 37.9 |
| 1966 | 55 | 37.9 |
| 1967 | 32 | 37.9 |
| 1968 | 38 | 37.9 |
| 1969 | 35 | 37.9 |
| 1970 | 47 | 33.6 |
| 1971 | 27 | 33.6 |
| 1972 | 30 | 33.6 |
| 1973 | 45 | 33.6 |
| 1974 | 19 | 33.6 |
| 1975 | 37 | 33.6 |
| 1976 | 27 | 33.6 |
| 1977 | 45 | 33.6 |
| 1978 | 40 | 33.6 |
| 1979 | 19 | 33.6 |
| 1980 | 44 | 42.4 |
| 1981 | 23 | 42.4 |
| 1982 | 30 | 42.4 |
| 1983 | 66 | 42.4 |
| 1984 | 42 | 42.4 |
| 1986 | 39 | 42.4 |
| 1987 | 57 | 42.4 |
| 1988 | 51 | 42.4 |
| 1989 | 30 | 42.4 |
| Year | First date | Last date |
|---|---|---|
| 1936 | 1936-05-07 | 1936-09-23 |
| 1937 | 1937-05-27 | 1937-09-04 |
| 1938 | 1938-05-03 | 1938-09-12 |
| 1939 | 1939-05-19 | 1939-10-10 |
| 1940 | 1940-05-06 | 1940-09-21 |
| 1941 | 1941-04-14 | 1941-10-07 |
| 1942 | 1942-04-26 | 1942-09-18 |
| 1943 | 1943-05-06 | 1943-09-29 |
| 1944 | 1944-05-12 | 1944-09-21 |
| 1945 | 1945-03-25 | 1945-09-28 |
| 1946 | 1946-04-22 | 1946-10-07 |
| 1947 | 1947-04-05 | 1947-10-23 |
| 1956 | 1956-05-11 | 1956-09-05 |
| 1957 | 1957-04-27 | 1957-09-11 |
| 1958 | 1958-06-05 | 1958-09-26 |
| 1959 | 1959-05-02 | 1959-10-05 |
| 1960 | 1960-04-23 | 1960-09-08 |
| 1961 | 1961-06-10 | 1961-09-25 |
| 1962 | 1962-05-13 | 1962-09-13 |
| 1963 | 1963-05-09 | 1963-09-12 |
| 1964 | 1964-05-19 | 1964-09-17 |
| 1965 | 1965-05-02 | 1965-09-22 |
| 1966 | 1966-05-23 | 1966-09-03 |
| 1967 | 1967-05-27 | 1967-10-04 |
| 1968 | 1968-06-06 | 1968-08-25 |
| 1969 | 1969-05-29 | 1969-10-13 |
| 1970 | 1970-04-30 | 1970-09-24 |
| 1971 | 1971-06-04 | 1971-09-29 |
| 1972 | 1972-05-22 | 1972-09-17 |
| 1973 | 1973-06-09 | 1973-09-27 |
| 1974 | 1974-05-14 | 1974-08-27 |
| 1975 | 1975-05-25 | 1975-08-26 |
| 1976 | 1976-04-18 | 1976-09-13 |
| 1977 | 1977-05-17 | 1977-09-05 |
| 1978 | 1978-05-27 | 1978-09-21 |
| 1979 | 1979-05-08 | 1979-09-04 |
| 1980 | 1980-05-29 | 1980-09-21 |
| 1981 | 1981-06-14 | 1981-09-13 |
| 1982 | 1982-05-06 | 1982-09-13 |
| 1983 | 1983-06-11 | 1983-09-19 |
| 1984 | 1984-06-05 | 1984-09-25 |
| 1986 | 1986-04-26 | 1986-09-30 |
| 1987 | 1987-04-21 | 1987-09-17 |
| 1988 | 1988-05-15 | 1988-08-27 |
| 1989 | 1989-05-30 | 1989-09-21 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 45 | 79 | 1936 | 30 |
| 35 C (95 F): Days | 19 | 17 | 1936 | 13 |
| 90 F (32.2 C): Days | 44 | 48 | 1936 | 11 |
| 100 F (37.8 C): Days | 3 | 5 | 1936 | 4 |
| 0 C (32 F): Ice days (max | 45 | 46 | 1963 | 31 |
| 0 C (32 F): Frost days (min | 46 | 170 | 1987 | 156 |
| -10 C (14 F): Days with min | 46 | 47 | 1978 | 42 |
| -20 C (-4 F): Days with min | 34 | 12 | 1963 | 7 |
| -30 C (-22 F): Days with min | 2 | 1 | 1984 | 1 |
| 20 C (68 F): Tropical nights (min | 44 | 27 | 1947 | 2 |
| 25 C (77 F): Days with min | 1 | 1 | 1983 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 46 | 47 | 1937 | 44 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 46 | 13 | 1964 | 12 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 31 | 4 | 1975 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 1 | 1 | 1984 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 31 | 5 | 1936 | 3 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 5 | 1 | 1936 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1936.
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 (2025-12-31).