San Rafael Rch Sp Threshold Days by Year (USC00027555)
12 fixed thresholds counted per year at San Rafael Rch Sp (USC00027555): hot days, frost, tropical nights and heavy rain, with the most days in a year.
Key Facts for San Rafael Rch Sp Thresholds
- San Rafael Rch Sp: days with 10 mm (0.39 in) or more of precipitation in 44 years, most in 1926 with 24.
- San Rafael Rch Sp: days with 25 mm (0.98 in) or more of precipitation in 42 years, most in 1925 with 5.
- San Rafael Rch Sp: days with 50 mm (1.97 in) or more of precipitation in 11 years, most in 1926 with 2.
- San Rafael Rch Sp: days with 10 cm (3.9 in) or more of snowfall in 8 years, most in 1939 with 2.
- 12 fixed thresholds have at least one qualifying day at San Rafael Rch Sp.
Days at or above 30 C (86 F)
6 years with a qualifying day| Year | Days | Decade average |
|---|---|---|
| 1952 | 127 | 95.2 |
| 1953 | 100 | 95.2 |
| 1954 | 64 | 95.2 |
| 1955 | 54 | 95.2 |
| 1956 | 119 | 95.2 |
| 1957 | 107 | 95.2 |
| Year | First date | Last date |
|---|---|---|
| 1952 | 1952-05-03 | 1952-10-24 |
| 1953 | 1953-05-20 | 1953-10-17 |
| 1954 | 1954-04-07 | 1954-09-17 |
| 1955 | 1955-05-27 | 1955-10-14 |
| 1956 | 1956-05-03 | 1956-10-14 |
| 1957 | 1957-02-13 | 1957-10-01 |
Every Fixed Threshold
| Threshold | Years with a qualifying day | Most days in a year | Year | Latest year days |
|---|---|---|---|---|
| 30 C (86 F): Days | 6 | 127 | 1952 | 107 |
| 35 C (95 F): Days | 6 | 36 | 1956 | 28 |
| 90 F (32.2 C): Days | 6 | 79 | 1953 | 72 |
| 100 F (37.8 C): Days | 4 | 10 | 1953 | 10 |
| 0 C (32 F): Frost days (min | 6 | 167 | 1955 | 103 |
| -10 C (14 F): Days with min | 6 | 29 | 1953 | 1 |
| 20 C (68 F): Tropical nights (min | 1 | 2 | 1957 | 2 |
| 25 C (77 F): Days with min | 1 | 1 | 1957 | 1 |
| 10 mm (0.39 in): Days with 10 mm or more rain | 44 | 24 | 1926 | 14 |
| 25 mm (0.98 in): Days with 25 mm or more rain | 42 | 5 | 1925 | 3 |
| 50 mm (1.97 in): Days with 50 mm or more rain | 11 | 2 | 1926 | 1 |
| 10 cm (3.9 in): Days with 10 cm or more snowfall | 8 | 2 | 1939 | 2 |
Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1952.
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).