Geyserville (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Geyserville.
Climate overview of Geyserville
Temperatures in Geyserville, California, United States of America, vary greatly throughout the year. July is the hottest month at 31°C (88°F), while December is the coldest at 14°C (57°F).
With around 851 mm (34 in) of annual rainfall, the city has moderate precipitation levels. December is the wettest month and August the driest. It also has a distinct dry season from May to September, with very warm summers and mild winters. Sunshine peaks in May, when the city sees around 10.3 hours of sunshine per day.
Geyserville Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Geyserville - and find the best time to visit.
Monthly Temperature in Geyserville
The climate in Geyserville is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a very warm 31°C (88°F) in July to a moderate 14°C (57°F) in the coolest month, December.
Nights vary from 12°C (54°F) in July to around 4°C (39°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Geyserville
Generally, Geyserville receives mid-range precipitation levels, with 851 mm (34 in) annually. The climate in Geyserville shows significant variation throughout the year. Expect heavy rainfall in December, the wettest month, with an average of 173 mm (6.8 in) of precipitation over 13 rainy days.
In contrast, the driest month August offers drier and sunnier days, with around 0.1 mm (0 in) of rainfall over 0 rainy days. For more details, please visit our Geyserville 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 Geyserville
For those who appreciate different seasons, Geyserville serves as an ideal destination. Expect longer, more sun-filled days in May with an average of 10.3 hours of sunshine daily, and embrace the darker days in December, offering only 5.3 hours of daily sunlight.
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 Geyserville
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: April, May, June and October
- Warmest weather: July, August and September
- Most sunshine: April, May, June and July
- Fewest rainy days: June, July, August and September
- Wettest months: January, February, March, November and December, when rainfall is highest.
- Seasonal pattern: A distinct dry season from May to September, with very warm summers and mild winters
Frequently asked questions about the climate in Geyserville
What is the best time to visit Geyserville?
April, May, June and October typically offer the most optimal weather in Geyserville. In contrast, January, February and December tend to have less optimal conditions. Geyserville has a distinct dry season from May to September, with very warm summers and mild winters.
What temperatures can I expect in Geyserville?
Daytime highs range from 14°C (57°F) in December to 31°C (88°F) in July. Nighttime lows range from 4°C (39°F) to 12°C (54°F). Temperatures vary considerably through the year.
How much rain does Geyserville get?
Annual rainfall is around 851 mm (34 in). December is the wettest month with 173 mm (6.8 in), while August is the driest with 0.1 mm (0 in).
How sunny is Geyserville?
Geyserville 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, Geyserville enjoys abundant sunshine.
Geyserville 3-Day Forecast
Geyserville on the map
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