Forestville Threshold Days by Year (CA007042378)
15 fixed thresholds counted per year at Forestville (CA007042378): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Forestville Thresholds
- Forestville: days with a maximum temperature at or below 0 C (32 F) in 20 years, most in 1968 with 119.
- Forestville: nights with a minimum temperature at or below 0 C (32 F) in 20 years, most in 1972 with 207.
- Forestville: nights with a minimum temperature at or below -10 C (14 F) in 20 years, most in 1972 with 113.
- Forestville: nights with a minimum temperature at or below -20 C (-4 F) in 20 years, most in 1972 with 56.
- 15 fixed thresholds have at least one qualifying day at Forestville.
Days at or above 30 C (86 F)
17 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1963 | 6 | 3 |
| 1965 | 2 | 3 |
| 1966 | 1 | 3 |
| 1967 | 3 | 3 |
| 1969 | 3 | 3 |
| 1970 | 8 | 4.1 |
| 1972 | 1 | 4.1 |
| 1973 | 3 | 4.1 |
| 1974 | 3 | 4.1 |
| 1975 | 4 | 4.1 |
| 1976 | 8 | 4.1 |
| 1977 | 5 | 4.1 |
| 1978 | 2 | 4.1 |
| 1979 | 3 | 4.1 |
| 1980 | 1 | 2.7 |
| 1981 | 1 | 2.7 |
| 1983 | 6 | 2.7 |
| Year | First date | Last date |
|---|---|---|
| 1963 | 1963-06-24 | 1963-07-27 |
| 1965 | 1965-06-20 | 1965-08-15 |
| 1966 | 1966-06-27 | 1966-06-27 |
| 1967 | 1967-06-04 | 1967-09-16 |
| 1969 | 1969-06-28 | 1969-08-16 |
| 1970 | 1970-07-23 | 1970-08-16 |
| 1972 | 1972-07-13 | 1972-07-13 |
| 1973 | 1973-07-24 | 1973-07-26 |
| 1974 | 1974-06-09 | 1974-08-22 |
| 1975 | 1975-07-13 | 1975-08-01 |
| 1976 | 1976-06-05 | 1976-08-22 |
| 1977 | 1977-05-22 | 1977-08-29 |
| 1978 | 1978-08-12 | 1978-08-15 |
| 1979 | 1979-06-16 | 1979-07-25 |
| 1980 | 1980-08-23 | 1980-08-23 |
| 1981 | 1981-07-31 | 1981-07-31 |
| 1983 | 1983-06-22 | 1983-08-16 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 17 | 8 | 1970 | 6 |
| 35 C (95 F): Days | 3 | 3 | 1963 | 1 |
| 90 F (32.2 C): Days | 11 | 4 | 1963 | 1 |
| 0 C (32 F): Ice days (max | 20 | 119 | 1968 | 101 |
| 0 C (32 F): Frost days (min | 20 | 207 | 1972 | 183 |
| -10 C (14 F): Days with min | 20 | 113 | 1972 | 83 |
| -20 C (-4 F): Days with min | 20 | 56 | 1972 | 29 |
| -30 C (-22 F): Days with min | 18 | 6 | 1971 | 4 |
| 20 C (68 F): Tropical nights (min | 7 | 6 | 1963 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 20 | 45 | 1966 | 37 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 20 | 15 | 1969 | 9 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 15 | 3 | 1966 | 2 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 20 | 19 | 1963 | 6 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 17 | 5 | 1977 | 1 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 1 | 1 | 1966 | 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).