Colusa County weather, town by town
9 places in Colusa County, California, each with its own live forecast and radar, and where a station sits close enough, measured weather records.
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Measured at the NOAA stations serving these towns, daily records 1906 to 2026. Station extremes, not official state records.
Colusa County Weather Facts
Colusa County has 9 places on myweatherrock (7 census-designated places, 2 cities), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 117°F at Willows 6 W on July 15, 1972. The coldest night is 5°F at Stony Gorge Rsvr on December 11, 1932. The wettest day brought 5.04 inches of rain at Stony Gorge Rsvr on January 9, 1995. The biggest single-day snow measured 12.99 inches at Willows 6 W on January 11, 1937. Those are station measurements from NOAA's daily records, 1906 to 2026, not official state records. By area the largest place is Williams, about 5 square miles.
About Colusa County weather
The map on the Now tab shows every Colusa County town's current temperature from our own server, one dot per town. Tap any dot, or type a town above, for that town's full forecast.
What the weather is usually like
Across the 9 Colusa County towns with station normals, the warmest month is July, when the day usually reaches 94°F, and the coldest is December, when the night usually falls to 37°F. January is the wettest, with rain on about 10 days. July afternoons run from about 93°F in Arbuckle to 96°F in Stonyford. December nights run from about 33°F in Stonyford to 38°F in Arbuckle.
Means of the 1991 to 2020 station normals serving these towns, as published by NOAA; each town's page carries its own.
Where these numbers come from
- Current conditions and forecast: NOAA forecast grids decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
- Records: computed by myweatherrock from NOAA GHCN-Daily station records at the stations serving these towns. Measurements, not estimates.
- Warnings and alerts: the National Weather Service, passed through unchanged.
Colusa County weather records
Measured at the NOAA stations serving these towns, daily records 1906 to 2026. Station extremes, not official state records.
Common questions about Colusa County weather
- What is the hottest temperature recorded at a Colusa County station?
- 117°F at Willows 6 W on July 15, 1972, in the NOAA daily station records myweatherrock holds (1906 to 2026).
- What is the coldest temperature recorded at a Colusa County station?
- 5°F at Stony Gorge Rsvr on December 11, 1932.
- What is the most rain a Colusa County station has measured in one day?
- 5.04 inches at Stony Gorge Rsvr on January 9, 1995.
- What is the biggest one-day snowfall at a Colusa County station?
- 12.99 inches at Willows 6 W on January 11, 1937.
- How many Colusa County towns have a weather page here?
- 9: 7 census-designated places, 2 cities. Each page carries current conditions, the hourly timeline, the ten day outlook, radar, and where a station sits close enough, measured records.
- Where does the Colusa County forecast come from?
- NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
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