Santa Rosa, CA All-Time Weather Extremes
The most extreme temperature, precipitation, and snowfall ever recorded in Santa Rosa, from NOAA daily weather observations.
| Temperature | ||
|---|---|---|
| Record High | 114.9°F (46°C) | September 6, 2022 |
| Record Low | 8.9°F (-13°C) | December 25, 1924 |
| Lowest High | 37°F (3°C) | January 14, 1926 and December 28, 1985 |
| Highest Low | 78°F (26°C) | June 17, 1993 |
| Highest Mean | 90.5°F (32°C) | September 6, 2022 |
| Lowest Mean | 27.9°F (-2°C) | December 9, 1972 |
| Precipitation | ||
| Max in One Calendar Day | 7.83" (198.9 mm) | October 24, 2021 |
| Max in One Month | 19.43" (493.6 mm) | February 1998 |
| Least in One Month | 0.00" (0.0 mm) | June 1902 |
| Max in One Year | 63.10" (1602.7 mm) | 1983 |
| Least in One Year | 11.09" (281.6 mm) | 2020 |
| Snowfall | ||
| Max in One Calendar Day | 7.0" (17.8 cm) | January 5, 1917 |
| Max in One Month | 23.7" (60.1 cm) | January 1917 |
| Max in One Season | 23.7" (60.1 cm) | 1916-17 |
| Max in One Year | 23.7" (60.1 cm) | 1917 |
| Earliest Snow | 6.5" (16.5 cm) | January 2, 1917 |
| Earliest Measurable Snow | 6.5" (16.5 cm) | January 2, 1917 |
| Latest Snow | 6.5" (16.5 cm) | April 26, 1963 |
| Latest Measurable Snow | 6.5" (16.5 cm) | April 26, 1963 |
| Period of Record | ||
| Temperature | June 2, 1902 – August 2, 2026 | |
| Precipitation | June 1, 1902 – August 2, 2026 | |
| Snowfall | February 1, 1903 – December 31, 2010 | |
Note: Records compiled from NOAA GHCN-Daily observations at SANTA ROSA (2 mi from Santa Rosa, CA). Quality-flagged readings are excluded. Monthly and annual totals require substantially complete reporting for “least” records.
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Frequently Asked Questions
What is the hottest temperature ever recorded in Santa Rosa, CA?
The all-time record high in Santa Rosa, CA is 114.9°F (46°C), set on September 6, 2022.
What is the coldest temperature ever recorded in Santa Rosa, CA?
The all-time record low in Santa Rosa, CA is 8.9°F (-13°C), set on December 25, 1924.
What is the most rain Santa Rosa, CA has ever had in one day?
The most precipitation recorded in one calendar day near Santa Rosa, CA is 7.83 inches, on October 24, 2021.
What is the biggest snowfall ever recorded in Santa Rosa, CA?
The most snow recorded in one calendar day near Santa Rosa, CA is 7.0 inches, on January 5, 1917.
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