Boat Bluff Threshold Days by Year
10 fixed thresholds counted per year at Boat Bluff (CA001060901): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Boat Bluff Thresholds
- Boat Bluff: days with a maximum temperature at or below 0 C (32 F) in 6 years, most in 1980 with 14.
- Boat Bluff: nights with a minimum temperature at or below 0 C (32 F) in 6 years, most in 1982 with 79.
- Boat Bluff: days with 10 mm (0.39 in) or more of precipitation in 6 years, most in 1980 with 147.
- Boat Bluff: days with 25 mm (0.98 in) or more of precipitation in 6 years, most in 1980 with 78.
- 10 fixed thresholds have at least one qualifying day at Boat Bluff.
Nights at or below 0 C (32 F)
6 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1978 | 28 | 43 |
| 1979 | 58 | 43 |
| 1980 | 54 | 49.8 |
| 1981 | 22 | 49.8 |
| 1982 | 79 | 49.8 |
| 1983 | 44 | 49.8 |
| Year | First date | Last date |
|---|---|---|
| 1978 | 1978-02-11 | 1978-12-31 |
| 1979 | 1979-01-01 | 1979-12-16 |
| 1980 | 1980-01-04 | 1980-12-24 |
| 1981 | 1981-01-28 | 1981-12-31 |
| 1982 | 1982-01-01 | 1982-12-30 |
| 1983 | 1983-01-09 | 1983-12-30 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 2 | 1 | 1982 | 1 |
| 0 C (32 F): Ice days (max | 6 | 14 | 1980 | 5 |
| 0 C (32 F): Frost days (min | 6 | 79 | 1982 | 44 |
| -10 C (14 F): Days with min | 3 | 5 | 1982 | 5 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 6 | 147 | 1980 | 138 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 6 | 78 | 1980 | 63 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 6 | 29 | 1980 | 17 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 5 | 5 | 1980 | 2 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 4 | 8 | 1979 | 8 |
| 25 cm (9.8 in): Days with 25 cm or more snowfall | 2 | 3 | 1982 | 3 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1982.
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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.
Data as of . Last revised (2026-10-14).