Mountain Lake Threshold Days by Year
11 fixed thresholds counted per year at Mountain Lake (USC00445784): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Mountain Lake Thresholds
- Mountain Lake: days with a maximum temperature at or below 0 C (32 F) in 12 years, most in 1940 with 51.
- Mountain Lake: nights with a minimum temperature at or below 0 C (32 F) in 11 years, most in 1944 with 159.
- Mountain Lake: nights with a minimum temperature at or below -10 C (14 F) in 11 years, most in 1940 with 46.
- Mountain Lake: days with 10 mm (0.39 in) or more of precipitation in 7 years, most in 1940 with 53.
- 11 fixed thresholds have at least one qualifying day at Mountain Lake.
Days at or above 30 C (86 F)
6 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1913 | 1 | 1 |
| 1941 | 5 | 3.6 |
| 1942 | 4 | 3.6 |
| 1944 | 4 | 3.6 |
| 1945 | 2 | 3.6 |
| 1947 | 3 | 3.6 |
| Year | First date | Last date |
|---|---|---|
| 1913 | 1913-08-09 | 1913-08-09 |
| 1941 | 1941-05-22 | 1941-09-10 |
| 1942 | 1942-07-18 | 1942-08-04 |
| 1944 | 1944-06-20 | 1944-08-14 |
| 1945 | 1945-06-29 | 1945-06-30 |
| 1947 | 1947-06-10 | 1947-07-31 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 6 | 5 | 1941 | 3 |
| 0 C (32 F): Ice days (max | 12 | 51 | 1940 | 43 |
| 0 C (32 F): Frost days (min | 11 | 159 | 1944 | 149 |
| -10 C (14 F): Days with min | 11 | 46 | 1940 | 42 |
| -20 C (-4 F): Days with min | 5 | 7 | 1942 | 3 |
| 20 C (68 F): Tropical nights (min | 2 | 1 | 1940 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 7 | 53 | 1940 | 35 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 7 | 17 | 1940 | 7 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 5 | 4 | 1940 | 4 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 1 | 1 | 1940 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 2 | 6 | 1944 | 6 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1913.
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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2025-12-31).