Sitka Magnetic Obsy Threshold Days by Year (USC00508503)
11 fixed thresholds counted per year at Sitka Magnetic Obsy (USC00508503): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Sitka Magnetic Obsy Thresholds
- Sitka Magnetic Obsy: days with a maximum temperature at or below 0 C (32 F) in 79 years, most in 1950 with 37.
- Sitka Magnetic Obsy: nights with a minimum temperature at or below 0 C (32 F) in 79 years, most in 1972 with 176.
- Sitka Magnetic Obsy: nights with a minimum temperature at or below -10 C (14 F) in 73 years, most in 1950 with 33.
- Sitka Magnetic Obsy: days with 10 mm (0.39 in) or more of precipitation in 52 years, most in 1964 with 104.
- 11 fixed thresholds have at least one qualifying day at Sitka Magnetic Obsy.
Days at or above 30 C (86 F)
4 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1929 | 1 | 1 |
| 1947 | 1 | 1 |
| 1976 | 1 | 1 |
| 1980 | 1 | 1 |
| Year | First date | Last date |
|---|---|---|
| 1929 | 1929-08-02 | 1929-08-02 |
| 1947 | 1947-07-19 | 1947-07-19 |
| 1976 | 1976-07-30 | 1976-07-30 |
| 1980 | 1980-06-05 | 1980-06-05 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 4 | 1 | 1929 | 1 |
| 0 C (32 F): Ice days (max | 79 | 37 | 1950 | 10 |
| 0 C (32 F): Frost days (min | 79 | 176 | 1972 | 129 |
| -10 C (14 F): Days with min | 73 | 33 | 1950 | 9 |
| -20 C (-4 F): Days with min | 9 | 2 | 1947 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 52 | 104 | 1964 | 67 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 52 | 31 | 1952 | 21 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 50 | 11 | 1952 | 2 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 15 | 2 | 1972 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 37 | 14 | 1971 | 3 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 8 | 1 | 1952 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1929.
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 (2025-12-31).