Sonora Pass Threshold Days by Year (USS0019L07S)
10 fixed thresholds counted per year at Sonora Pass (USS0019L07S): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for Sonora Pass Thresholds
- Sonora Pass: days with 10 mm (0.39 in) or more of precipitation in 48 years, most in 1982 with 52.
- Sonora Pass: days with 25 mm (0.98 in) or more of precipitation in 48 years, most in 1996 with 23.
- Sonora Pass: days with a maximum temperature at or below 0 C (32 F) in 41 years, most in 2023 with 67.
- Sonora Pass: nights with a minimum temperature at or below 0 C (32 F) in 33 years, most in 1998 with 244.
- 10 fixed thresholds have at least one qualifying day at Sonora Pass.
Days at or above 30 C (86 F)
4 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1987 | 1 | 3 |
| 1988 | 5 | 3 |
| 2002 | 2 | 2 |
| 2024 | 2 | 2 |
| Year | First date | Last date |
|---|---|---|
| 1987 | 1987-07-14 | 1987-07-14 |
| 1988 | 1988-07-16 | 1988-07-20 |
| 2002 | 2002-07-10 | 2002-07-11 |
| 2024 | 2024-07-06 | 2024-07-07 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 4 | 5 | 1988 | 2 |
| 90 F (32.2 C): Days | 1 | 1 | 1988 | 1 |
| 0 C (32 F): Ice days (max | 41 | 67 | 2023 | 17 |
| 0 C (32 F): Frost days (min | 33 | 244 | 1998 | 127 |
| -10 C (14 F): Days with min | 33 | 80 | 2023 | 16 |
| -20 C (-4 F): Days with min | 19 | 5 | 1989 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 48 | 52 | 1982 | 17 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 48 | 23 | 1996 | 6 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 33 | 8 | 2017 | 1 |
| 100 mm (3.94 in): Days with 100 mm or more rain | 4 | 2 | 1986 | 1 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1987.
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).