St Donat Threshold Days by Year (CA007017100)
16 fixed thresholds counted per year at St Donat (CA007017100): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for St Donat Thresholds
- St Donat: nights with a minimum temperature at or below 0 C (32 F) in 19 years, most in 1972 with 212.
- St Donat: nights with a minimum temperature at or below -10 C (14 F) in 19 years, most in 1971 with 108.
- St Donat: nights with a minimum temperature at or below -20 C (-4 F) in 19 years, most in 1972 with 55.
- St Donat: nights with a minimum temperature at or below -30 C (-22 F) in 19 years, most in 1967 with 16.
- 16 fixed thresholds have at least one qualifying day at St Donat.
Days at or above 30 C (86 F)
13 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1966 | 4 | 3.5 |
| 1968 | 3 | 3.5 |
| 1970 | 1 | 3.3 |
| 1972 | 1 | 3.3 |
| 1973 | 1 | 3.3 |
| 1975 | 10 | 3.3 |
| 1976 | 3 | 3.3 |
| 1977 | 2 | 3.3 |
| 1978 | 7 | 3.3 |
| 1979 | 1 | 3.3 |
| 1981 | 1 | 5 |
| 1982 | 3 | 5 |
| 1983 | 11 | 5 |
| Year | First date | Last date |
|---|---|---|
| 1966 | 1966-06-23 | 1966-07-03 |
| 1968 | 1968-07-16 | 1968-07-18 |
| 1970 | 1970-07-29 | 1970-07-29 |
| 1972 | 1972-07-12 | 1972-07-12 |
| 1973 | 1973-07-24 | 1973-07-24 |
| 1975 | 1975-05-23 | 1975-08-03 |
| 1976 | 1976-06-06 | 1976-08-21 |
| 1977 | 1977-07-19 | 1977-07-20 |
| 1978 | 1978-05-25 | 1978-08-15 |
| 1979 | 1979-07-14 | 1979-07-14 |
| 1981 | 1981-07-08 | 1981-07-08 |
| 1982 | 1982-07-07 | 1982-07-22 |
| 1983 | 1983-06-12 | 1983-09-05 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 13 | 11 | 1983 | 11 |
| 35 C (95 F): Days | 1 | 1 | 1975 | 1 |
| 90 F (32.2 C): Days | 3 | 4 | 1975 | 3 |
| 0 C (32 F): Ice days (max | 18 | 119 | 1976 | 95 |
| 0 C (32 F): Frost days (min | 19 | 212 | 1972 | 191 |
| -10 C (14 F): Days with min | 19 | 108 | 1971 | 82 |
| -20 C (-4 F): Days with min | 19 | 55 | 1972 | 36 |
| -30 C (-22 F): Days with min | 19 | 16 | 1967 | 5 |
| -40 C (-40 F): Days with min | 3 | 1 | 1967 | 1 |
| 20 C (68 F): Tropical nights (min | 10 | 3 | 1968 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 19 | 54 | 1972 | 43 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 19 | 10 | 1979 | 6 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 6 | 2 | 1965 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 19 | 16 | 1972 | 10 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 8 | 2 | 1966 | 2 |
| 50 cm (19.7 in): Days with 50 cm or more snowfall | 2 | 1 | 1972 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1966.
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).