Fort Simpson A Threshold Days by Year (CA002202101)
15 fixed thresholds counted per year at Fort Simpson A (CA002202101): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Fort Simpson A Thresholds
- Fort Simpson A: days with a maximum temperature at or below 0 C (32 F) in 20 years, most in 1974 with 189.
- Fort Simpson A: nights with a minimum temperature at or below 0 C (32 F) in 20 years, most in 1972 with 252.
- Fort Simpson A: nights with a minimum temperature at or below -10 C (14 F) in 20 years, most in 1966 with 177.
- Fort Simpson A: nights with a minimum temperature at or below -20 C (-4 F) in 20 years, most in 1982 with 141.
- 15 fixed thresholds have at least one qualifying day at Fort Simpson A.
Days at or above 30 C (86 F)
17 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1964 | 3 | 2.6 |
| 1966 | 1 | 2.6 |
| 1967 | 4 | 2.6 |
| 1968 | 1 | 2.6 |
| 1969 | 4 | 2.6 |
| 1970 | 3 | 4 |
| 1971 | 5 | 4 |
| 1972 | 4 | 4 |
| 1973 | 2 | 4 |
| 1975 | 9 | 4 |
| 1976 | 2 | 4 |
| 1977 | 1 | 4 |
| 1979 | 6 | 4 |
| 1980 | 3 | 5 |
| 1981 | 7 | 5 |
| 1982 | 5 | 5 |
| 1983 | 5 | 5 |
| Year | First date | Last date |
|---|---|---|
| 1964 | 1964-06-09 | 1964-07-09 |
| 1966 | 1966-06-17 | 1966-06-17 |
| 1967 | 1967-06-19 | 1967-09-15 |
| 1968 | 1968-07-04 | 1968-07-04 |
| 1969 | 1969-06-07 | 1969-07-19 |
| 1970 | 1970-06-03 | 1970-07-30 |
| 1971 | 1971-07-18 | 1971-08-02 |
| 1972 | 1972-06-24 | 1972-08-22 |
| 1973 | 1973-07-20 | 1973-07-30 |
| 1975 | 1975-06-20 | 1975-07-12 |
| 1976 | 1976-06-28 | 1976-08-08 |
| 1977 | 1977-06-18 | 1977-06-18 |
| 1979 | 1979-07-01 | 1979-08-17 |
| 1980 | 1980-06-07 | 1980-08-13 |
| 1981 | 1981-07-11 | 1981-08-09 |
| 1982 | 1982-06-13 | 1982-08-09 |
| 1983 | 1983-06-28 | 1983-07-02 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 17 | 9 | 1975 | 5 |
| 35 C (95 F): Days | 1 | 1 | 1975 | 1 |
| 90 F (32.2 C): Days | 6 | 7 | 1975 | 3 |
| 0 C (32 F): Ice days (max | 20 | 189 | 1974 | 176 |
| 0 C (32 F): Frost days (min | 20 | 252 | 1972 | 247 |
| -10 C (14 F): Days with min | 20 | 177 | 1966 | 173 |
| -20 C (-4 F): Days with min | 20 | 141 | 1982 | 116 |
| -30 C (-22 F): Days with min | 20 | 77 | 1966 | 39 |
| -40 C (-40 F): Days with min | 20 | 26 | 1966 | 7 |
| 20 C (68 F): Tropical nights (min | 1 | 1 | 1964 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 20 | 17 | 1981 | 5 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 12 | 5 | 1981 | 5 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 1 | 1 | 1973 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 15 | 6 | 1981 | 5 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 2 | 2 | 1981 | 2 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1964.
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).