Whitehorse Riverdale Threshold Days by Year (CA002101400)
12 fixed thresholds counted per year at Whitehorse Riverdale (CA002101400): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Whitehorse Riverdale Thresholds
- Whitehorse Riverdale: days with a maximum temperature at or below 0 C (32 F) in 24 years, most in 1982 with 143.
- Whitehorse Riverdale: nights with a minimum temperature at or below 0 C (32 F) in 24 years, most in 1964 with 242.
- Whitehorse Riverdale: nights with a minimum temperature at or below -10 C (14 F) in 24 years, most in 1961 with 146.
- Whitehorse Riverdale: nights with a minimum temperature at or below -20 C (-4 F) in 24 years, most in 1973 with 87.
- 12 fixed thresholds have at least one qualifying day at Whitehorse Riverdale.
Days at or above 30 C (86 F)
15 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1960 | 1 | 2.3 |
| 1961 | 1 | 2.3 |
| 1962 | 2 | 2.3 |
| 1965 | 3 | 2.3 |
| 1966 | 1 | 2.3 |
| 1969 | 6 | 2.3 |
| 1971 | 3 | 4 |
| 1972 | 4 | 4 |
| 1975 | 1 | 4 |
| 1976 | 3 | 4 |
| 1977 | 7 | 4 |
| 1978 | 6 | 4 |
| 1980 | 1 | 2.3 |
| 1982 | 4 | 2.3 |
| 1983 | 2 | 2.3 |
| Year | First date | Last date |
|---|---|---|
| 1960 | 1960-08-07 | 1960-08-07 |
| 1961 | 1961-07-27 | 1961-07-27 |
| 1962 | 1962-07-30 | 1962-07-31 |
| 1965 | 1965-07-09 | 1965-07-11 |
| 1966 | 1966-07-17 | 1966-07-17 |
| 1969 | 1969-06-09 | 1969-06-15 |
| 1971 | 1971-07-27 | 1971-08-01 |
| 1972 | 1972-06-12 | 1972-07-06 |
| 1975 | 1975-07-11 | 1975-07-11 |
| 1976 | 1976-07-30 | 1976-08-03 |
| 1977 | 1977-08-04 | 1977-08-20 |
| 1978 | 1978-07-09 | 1978-08-03 |
| 1980 | 1980-06-06 | 1980-06-06 |
| 1982 | 1982-06-25 | 1982-07-28 |
| 1983 | 1983-05-30 | 1983-06-24 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 15 | 7 | 1977 | 2 |
| 35 C (95 F): Days | 1 | 2 | 1969 | 2 |
| 90 F (32.2 C): Days | 3 | 3 | 1969 | 1 |
| 0 C (32 F): Ice days (max | 24 | 143 | 1982 | 137 |
| 0 C (32 F): Frost days (min | 24 | 242 | 1964 | 229 |
| -10 C (14 F): Days with min | 24 | 146 | 1961 | 122 |
| -20 C (-4 F): Days with min | 24 | 87 | 1973 | 65 |
| -30 C (-22 F): Days with min | 24 | 43 | 1966 | 29 |
| -40 C (-40 F): Days with min | 23 | 20 | 1975 | 2 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 10 | 5 | 1974 | 4 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 1 | 1 | 1977 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 7 | 3 | 1976 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1960.
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).