Mtn View 91 Threshold Days by Year
9 fixed thresholds counted per year at Mtn View 91 (USC00516552): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Mtn View 91 Thresholds
- Mtn View 91: days with 10 mm (0.39 in) or more of precipitation in 63 years, most in 1911 with 182.
- Mtn View 91: days with 25 mm (0.98 in) or more of precipitation in 63 years, most in 1911 with 87.
- Mtn View 91: days with 50 mm (1.97 in) or more of precipitation in 63 years, most in 1918 with 42.
- Mtn View 91: days with 100 mm (3.94 in) or more of precipitation in 60 years, most in 1969 with 17.
- 9 fixed thresholds have at least one qualifying day at Mtn View 91.
Days at or above 30 C (86 F)
20 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1908 | 2 | 2 |
| 1910 | 13 | 20.3 |
| 1911 | 19 | 20.3 |
| 1912 | 29 | 20.3 |
| 1940 | 13 | 4 |
| 1942 | 1 | 4 |
| 1944 | 1 | 4 |
| 1945 | 1 | 4 |
| 1951 | 1 | 1 |
| 1965 | 1 | 1 |
| 1968 | 1 | 1 |
| 1969 | 1 | 1 |
| 1972 | 4 | 2.8 |
| 1974 | 3 | 2.8 |
| 1976 | 2 | 2.8 |
| 1979 | 2 | 2.8 |
| 1980 | 4 | 3 |
| 1981 | 1 | 3 |
| 1982 | 1 | 3 |
| 1983 | 6 | 3 |
| Year | First date | Last date |
|---|---|---|
| 1908 | 1908-03-17 | 1908-08-12 |
| 1910 | 1910-05-22 | 1910-10-27 |
| 1911 | 1911-01-20 | 1911-10-24 |
| 1912 | 1912-02-02 | 1912-10-20 |
| 1940 | 1940-01-01 | 1940-08-05 |
| 1942 | 1942-09-26 | 1942-09-26 |
| 1944 | 1944-03-06 | 1944-03-06 |
| 1945 | 1945-09-28 | 1945-09-28 |
| 1951 | 1951-09-21 | 1951-09-21 |
| 1965 | 1965-09-19 | 1965-09-19 |
| 1968 | 1968-10-11 | 1968-10-11 |
| 1969 | 1969-06-17 | 1969-06-17 |
| 1972 | 1972-12-23 | 1972-12-26 |
| 1974 | 1974-01-11 | 1974-09-20 |
| 1976 | 1976-10-03 | 1976-10-04 |
| 1979 | 1979-10-08 | 1979-10-09 |
| 1980 | 1980-02-23 | 1980-12-23 |
| 1981 | 1981-09-21 | 1981-09-21 |
| 1982 | 1982-08-19 | 1982-08-19 |
| 1983 | 1983-06-04 | 1983-08-14 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 20 | 29 | 1912 | 6 |
| 90 F (32.2 C): Days | 3 | 4 | 1911 | 1 |
| 20 C (68 F): Tropical nights (min | 29 | 14 | 1920 | 9 |
| 25 C (77 F): Days with min | 1 | 1 | 1970 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 63 | 182 | 1911 | 6 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 63 | 87 | 1911 | 1 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 63 | 42 | 1918 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 60 | 17 | 1969 | 3 |
| 200 mm (7.87 in): Days with 200 mm or more rain | 33 | 3 | 1918 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1908.
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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2025-12-31).