Lake County weather, town by town
15 places in Lake 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 1949 to 2026. Station extremes, not official state records.
Lake County Weather Facts
Lake County has 15 places on myweatherrock (13 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 Ukiah Muni Ap on September 6, 2022. The coldest night is 6°F at Clearlake 4 Se on December 22, 1990. The wettest day brought 10.57 inches of rain at Middletown on January 23, 1895. The biggest single-day snow measured 0 inches at Ukiah Muni Ap on September 12, 1949. Those are station measurements from NOAA's daily records, 1949 to 2026, not official state records. By area the largest place is Clearlake, about 10 square miles.
About Lake County weather
The map on the Now tab shows every Lake 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 15 Lake County towns with station normals, the warmest month is July, when the day usually reaches 93°F, and the coldest is December, when the night usually falls to 33°F. January is the wettest, with rain on about 11 days. December nights run from about 32°F in Clearlake to 36°F in Lakeport.
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.
Lake County weather records
Measured at the NOAA stations serving these towns, daily records 1949 to 2026. Station extremes, not official state records.
Common questions about Lake County weather
- What is the hottest temperature recorded at a Lake County station?
- 117°F at Ukiah Muni Ap on September 6, 2022, in the NOAA daily station records myweatherrock holds (1949 to 2026).
- What is the coldest temperature recorded at a Lake County station?
- 6°F at Clearlake 4 Se on December 22, 1990.
- What is the most rain a Lake County station has measured in one day?
- 10.57 inches at Middletown on January 23, 1895.
- What is the biggest one-day snowfall at a Lake County station?
- 0 inches at Ukiah Muni Ap on September 12, 1949.
- How many Lake County towns have a weather page here?
- 15: 13 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 Lake 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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