Three Rivers (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Three Rivers.
Climate overview of Three Rivers
The climate in Three Rivers, California, United States of America, is marked by large temperature swings across the seasons, ranging from 37°C (99°F) in July to 14°C (57°F) in December.
With around 499 mm (20 in) of annual rainfall, Three Rivers has a fairly dry climate. However, it has a distinct dry season from May to October, with very hot summers and mild winters. The wettest month is December, while August sees the least rain.
Three Rivers Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Three Rivers - and find the best time to visit.
Monthly Temperature in Three Rivers
In Three Rivers, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a very hot 37°C (99°F) in July. In December, the coolest month of the year, temperatures drop to a moderate 14°C (57°F).
At night, temperatures range from around 20°C (68°F) in July to 3°C (37°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Three Rivers
Three Rivers typically sees modest rainfall throughout the year, with an average annual precipitation of 499 mm (20 in). Three Rivers can be quite wet during December, receiving approximately 106 mm (4.2 in) of precipitation over 9 rainy days.
In contrast, during the driest month (August), you will experience much drier conditions, with 0.3 mm (0.01 in) of precipitation spread across a single rainy day. For more details, please visit our Three Rivers 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 Three Rivers
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: March, 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 hot summers and mild winters
Frequently asked questions about the climate in Three Rivers
What is the best time to visit Three Rivers?
March, April, May and October typically offer the most optimal weather in Three Rivers. In contrast, July, August and September tend to have less optimal conditions. Three Rivers has a distinct dry season from May to October, with very hot summers and mild winters.
What temperatures can I expect in Three Rivers?
Daytime highs range from 14°C (57°F) in December to 37°C (99°F) in July. Nighttime lows range from 3°C (37°F) to 20°C (68°F). Temperatures vary considerably through the year.
How much rain does Three Rivers get?
Annual rainfall is around 499 mm (20 in). December is the wettest month with 106 mm (4.2 in), while August is the driest with 0.3 mm (0.01 in).
Three Rivers 3-Day Forecast
Three Rivers on the map
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Popular this month
Where to go in August - average daytime high across popular destinations.
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