Jamestown (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Jamestown.
Climate overview of Jamestown
Temperatures in Jamestown, California, United States of America, vary greatly throughout the year. July is the hottest month at 34°C (93°F), while December is the coldest at 13°C (55°F).
The city receives around 686 mm (27 in) of rain/snowfall per year. It experiences a distinct dry season from May to October, with very warm summers and mild winters. December is the wettest month and July the driest.
Jamestown Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Jamestown - and find the best time to visit.
Monthly Temperature in Jamestown
The climate in Jamestown is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a very warm 34°C (93°F) in July to a moderate 13°C (55°F) in December.
Nighttime temperatures range from 16°C (61°F) in July to 1°C (34°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Jamestown
Generally, Jamestown receives mid-range precipitation levels, with 686 mm (27 in) annually. The seasons in Jamestown bring significant changes in precipitation. The wettest month, December, receives high rainfall, with an average of 140 mm (5.5 in) of precipitation. This rainfall is distributed across 11 rainy days.
In contrast, the driest month, July, experiences much less rainfall, totaling 0.1 mm (0 in) over 0 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Jamestown Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Jamestown
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 and October
- Warmest weather: July and August
- Fewest rainy days: June, July, August and September
- Wettest months: January, February, March, April, November and December, when rainfall is highest.
- Seasonal pattern: A distinct dry season from May to October, with very warm summers and mild winters
Frequently asked questions about the climate in Jamestown
What is the best time to visit Jamestown?
April, May and October typically offer the most optimal weather in Jamestown. In contrast, July, August and December tend to have less optimal conditions. Jamestown has a distinct dry season from May to October, with very warm summers and mild winters.
What temperatures can I expect in Jamestown?
Daytime highs range from 13°C (55°F) in December to 34°C (93°F) in July. Nighttime lows range from 1°C (34°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Jamestown get?
Annual rainfall is around 686 mm (27 in). December is the wettest month with 140 mm (5.5 in), while July is the driest with 0.1 mm (0 in).
Jamestown 3-Day Forecast
Jamestown (CA) 3-Day Forecast
Jamestown on the map
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