San Jose Threshold Days by Year (BLM00085247)
7 fixed thresholds counted per year at San Jose (BLM00085247): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for San Jose Thresholds
- San Jose: days with a maximum temperature at or above 30 C (86 F) in 3 years, most in 2010 with 266.
- San Jose: days with a maximum temperature at or above 35 C (95 F) in 3 years, most in 2010 with 135.
- San Jose: days with a maximum temperature at or above 40 C (104 F) in 3 years, most in 2015 with 19.
- San Jose: days with a maximum temperature at or above 90 F (32.2 C) in 3 years, most in 2009 with 213.
- 7 fixed thresholds have at least one qualifying day at San Jose.
Days at or above 30 C (86 F)
3 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 2009 | 260 | 260 |
| 2010 | 266 | 266 |
| 2015 | 266 | 266 |
| Year | First date | Last date |
|---|---|---|
| 2009 | 2009-01-01 | 2009-12-31 |
| 2010 | 2010-01-01 | 2010-12-31 |
| 2015 | 2015-01-01 | 2015-12-31 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 3 | 266 | 2010 | 266 |
| 35 C (95 F): Days | 3 | 135 | 2010 | 121 |
| 40 C (104 F): Days | 3 | 19 | 2015 | 19 |
| 90 F (32.2 C): Days | 3 | 213 | 2009 | 210 |
| 100 F (37.8 C): Days | 3 | 54 | 2015 | 54 |
| 20 C (68 F): Tropical nights (min | 1 | 0 | n/a | 211 |
| 25 C (77 F): Days with min | 1 | 0 | n/a | 30 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2009.
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 (2026-10-17).