Donald Threshold Days by Year (CA001172525)
13 fixed thresholds counted per year at Donald (CA001172525): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Donald Thresholds
- Donald: days with a maximum temperature at or above 30 C (86 F) in 9 years, most in 1971 with 29.
- Donald: days with a maximum temperature at or below 0 C (32 F) in 9 years, most in 1898 with 99.
- Donald: nights with a minimum temperature at or below 0 C (32 F) in 9 years, most in 1893 with 227.
- Donald: nights with a minimum temperature at or below -10 C (14 F) in 9 years, most in 1898 with 99.
- 13 fixed thresholds have at least one qualifying day at Donald.
Days at or above 30 C (86 F)
9 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1892 | 11 | 18.4 |
| 1893 | 16 | 18.4 |
| 1894 | 24 | 18.4 |
| 1898 | 27 | 18.4 |
| 1899 | 14 | 18.4 |
| 1966 | 4 | 13.5 |
| 1967 | 23 | 13.5 |
| 1970 | 22 | 25.5 |
| 1971 | 29 | 25.5 |
| Year | First date | Last date |
|---|---|---|
| 1892 | 1892-06-27 | 1892-08-22 |
| 1893 | 1893-07-08 | 1893-09-01 |
| 1894 | 1894-05-26 | 1894-08-22 |
| 1898 | 1898-05-25 | 1898-08-25 |
| 1899 | 1899-07-08 | 1899-07-31 |
| 1966 | 1966-08-02 | 1966-08-25 |
| 1967 | 1967-07-03 | 1967-09-01 |
| 1970 | 1970-06-02 | 1970-08-25 |
| 1971 | 1971-07-15 | 1971-08-29 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 9 | 29 | 1971 | 29 |
| 35 C (95 F): Days | 4 | 4 | 1971 | 4 |
| 90 F (32.2 C): Days | 8 | 20 | 1971 | 20 |
| 0 C (32 F): Ice days (max | 9 | 99 | 1898 | 80 |
| 0 C (32 F): Frost days (min | 9 | 227 | 1893 | 223 |
| -10 C (14 F): Days with min | 9 | 99 | 1898 | 84 |
| -20 C (-4 F): Days with min | 9 | 38 | 1893 | 32 |
| -30 C (-22 F): Days with min | 7 | 11 | 1899 | 4 |
| -40 C (-40 F): Days with min | 1 | 1 | 1893 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 5 | 18 | 1967 | 16 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 2 | 4 | 1898 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 6 | 11 | 1970 | 9 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 1 | 3 | 1898 | 3 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1892.
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).