San Miguel Island Threshold Days by Year (USC00047866)
8 fixed thresholds counted per year at San Miguel Island (USC00047866): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for San Miguel Island Thresholds
- San Miguel Island: days with a maximum temperature at or above 30 C (86 F) in 17 years, most in 1921 with 12.
- San Miguel Island: days with 10 mm (0.39 in) or more of precipitation in 10 years, most in 1941 with 28.
- San Miguel Island: days with 25 mm (0.98 in) or more of precipitation in 10 years, most in 1941 with 8.
- San Miguel Island: nights with a minimum temperature at or above 20 C (68 F) in 9 years, most in 1909 with 3.
- 8 fixed thresholds have at least one qualifying day at San Miguel Island.
Days at or above 30 C (86 F)
17 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1895 | 4 | 2.7 |
| 1898 | 3 | 2.7 |
| 1899 | 1 | 2.7 |
| 1900 | 4 | 3 |
| 1901 | 3 | 3 |
| 1906 | 1 | 3 |
| 1909 | 4 | 3 |
| 1910 | 2 | 3.3 |
| 1912 | 2 | 3.3 |
| 1913 | 3 | 3.3 |
| 1914 | 2 | 3.3 |
| 1916 | 1 | 3.3 |
| 1917 | 8 | 3.3 |
| 1918 | 5 | 3.3 |
| 1919 | 3 | 3.3 |
| 1921 | 12 | 12 |
| 1941 | 1 | 1 |
| Year | First date | Last date |
|---|---|---|
| 1895 | 1895-06-19 | 1895-11-18 |
| 1898 | 1898-04-13 | 1898-08-12 |
| 1899 | 1899-10-08 | 1899-10-08 |
| 1900 | 1900-09-28 | 1900-11-13 |
| 1901 | 1901-03-01 | 1901-10-22 |
| 1906 | 1906-09-18 | 1906-09-18 |
| 1909 | 1909-09-16 | 1909-10-24 |
| 1910 | 1910-10-20 | 1910-10-25 |
| 1912 | 1912-10-14 | 1912-10-17 |
| 1913 | 1913-09-16 | 1913-10-19 |
| 1914 | 1914-03-18 | 1914-10-26 |
| 1916 | 1916-03-11 | 1916-03-11 |
| 1917 | 1917-09-26 | 1917-12-29 |
| 1918 | 1918-10-11 | 1918-10-31 |
| 1919 | 1919-01-05 | 1919-11-16 |
| 1921 | 1921-09-26 | 1921-11-06 |
| 1941 | 1941-11-05 | 1941-11-05 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 17 | 12 | 1921 | 1 |
| 35 C (95 F): Days | 1 | 2 | 1921 | 2 |
| 90 F (32.2 C): Days | 8 | 7 | 1921 | 7 |
| 0 C (32 F): Frost days (min | 2 | 2 | 1903 | 1 |
| 20 C (68 F): Tropical nights (min | 9 | 3 | 1909 | 3 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 10 | 28 | 1941 | 28 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 10 | 8 | 1941 | 8 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 6 | 3 | 1911 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1895.
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).