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Weather in Clearlake, CA · National Weather Service + NOAA

Clearlake has hot summers

Clearlake has mild winters and hot summers. A typical July afternoon reaches 93°, a January night drops to 35°, and snow is almost unheard of. Normal November highs come to 63°, and lows to 38°.

Winter 56°/35°Spring 69°/42°Summer 90°/55°Fall 76°/45°
Right now
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Sunrise 9:39 am · sunset 8:08 pm

Getting the latest forecast from the National Weather Service…

What stands out about Clearlake’s weather

Read from 30 years of NOAA records. Each one opens the full story on the Climate page.

Climate →
Hot summersJuly afternoons average 93°, hotter than 92% of U.S. towns.Snow is rareAbout 0.4 inches in a normal year, so most winters see none.Plenty of 90° daysAbout 66 days a year reach 90°.
A normal year

Where today sits in Clearlake’s year

Typical highs and lows month by month, from 30 years of NOAA records.

Full climate →
Winter
56° / 35°
Snow is rare
Spring
69° / 42°
Last frost around Apr 10
Summer
90° / 55°
66 days reach 90° in a normal year
Fall now
76° / 45°
First frost around Nov 6
4 daysuntil the usual first frost (Nov 6)
Best months to be outside
AprMayOct
Highs of 62–84° and lows of 40° or more
How much snow does Clearlake get?Almost none.When is it wettest?January, with 8.3 inches.Is it warmer than it used to be?+1.2° vs. the 20th century.

Weather talk

Road reports, first frosts and storm memories from neighbors in Clearlake.

Town Square →
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Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Clearlake itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Clearlake 4 Se, CA (4 mi). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.