Clearlake (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Clearlake.
Climate overview of Clearlake
Clearlake, California, United States of America, sees big temperature differences between seasons, with July peaking at 34°C (93°F) and December dropping to 13°C (55°F).
Annual rain/snowfall is moderate at around 608 mm (24 in), with December being the wettest month. The city also has a distinct dry season from May to October. The sunniest month is May, with 10.3 hours of sunshine per day on average.
Clearlake Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Clearlake — and find the best time to visit.
Monthly Temperature in Clearlake
Visitors to Clearlake can expect significant temperature changes throughout the year. Average daytime temperatures reach a very warm 34°C (93°F) in July. In December, the coolest month of the year, temperatures drop to a moderate 13°C (55°F).
At night, temperatures range from around 15°C (59°F) in July to 2°C (36°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Clearlake
Generally, Clearlake experiences moderate precipitation patterns, averaging 608 mm (24 in) yearly. Clearlake can be quite wet during December, receiving approximately 130 mm (5.1 in) of precipitation over 13 rainy days.
In contrast, during the driest month (August), you will experience much drier conditions, with 0 mm (0 in) of precipitation spread across 0 rainy days days. For more details, please visit our Clearlake Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Clearlake
Clearlake can be enjoyed more throughout the sunniest month of May under a blue sky, with approximately 10.3 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 5.3 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Best Time to Visit Clearlake
The weather does bring rainfall during this period, between 6 mm (0.2 in) and 51 mm (2 in). Planning your next adventure but unsure where to go? Our climate tool suggests perfect locations tailored to your preferred weather conditions. Discover your ideal travel destination with our weather planner.
Frequently asked questions about the climate in Clearlake
What is the best time to visit Clearlake?
April, May and October typically offer the most optimal weather in Clearlake. In contrast, July and December tend to have less optimal conditions. Clearlake has a distinct dry season from May to October.
What temperatures can I expect in Clearlake?
Daytime highs range from 13°C (55°F) in December to 34°C (93°F) in July. Nighttime lows range from 2°C (36°F) to 15°C (59°F). Temperatures vary considerably through the year.
How much rain does Clearlake get?
Annual rainfall is around 608 mm (24 in). December is the wettest month with 130 mm (5.1 in), while August is the driest with 0 mm (0 in).
How sunny is Clearlake?
Clearlake receives around 3,042 hours of sunshine per year. May is the sunniest month with 310 hours, while December is the cloudiest with just 160 hours. Overall, Clearlake enjoys abundant sunshine.
Clearlake 3-Day Forecast
Clearlake (CA) 3-Day Forecast
Clearlake on the map
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