Rohnert Park (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Rohnert Park.
Climate overview of Rohnert Park
Rohnert Park, California, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 28°C (82°F) in September, while winters cool to 14°C (57°F) in December.
The city receives around 659 mm (26 in) of rainfall per year. It experiences a distinct dry season from May to September, with warm summers and mild winters. December is the wettest month and August the driest. May is the sunniest month, averaging 10.3 hours of sunshine per day.
Rohnert Park Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Rohnert Park - and find the best time to visit.
Monthly Temperature in Rohnert Park
Depending on the time of the year, temperatures range from comfortable to moderate in Rohnert Park. On average, daytime temperatures range from a comfortable 28°C (82°F) in September to a moderate 14°C (57°F) in December.
Nighttime temperatures range from 11°C (52°F) in September to 3°C (37°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Rohnert Park
Generally, Rohnert Park has a moderate amount of precipitation, averaging 659 mm (26 in) of rainfall annually. The seasons in Rohnert Park bring significant changes in precipitation. The wettest month, December, receives high rainfall, with an average of 135 mm (5.3 in) of precipitation. This rainfall is distributed across 12 rainy days.
In contrast, the driest month, August, experiences much less rainfall, totaling 0.3 mm (0.01 in) over a single rainy day. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Rohnert Park 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 Rohnert Park
In Rohnert Park, summer days are longer and more sunny, with daily sunshine hours peaking at 10.3 hours in May. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 5.3 hours per average 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 Rohnert Park
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, July, August, September and October
- Warmest weather: June, 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 warm summers and mild winters
Frequently asked questions about the climate in Rohnert Park
What is the best time to visit Rohnert Park?
April, May, June, July, August, September and October typically offer the most optimal weather in Rohnert Park. In contrast, January, February and December tend to have less optimal conditions. Rohnert Park has a distinct dry season from May to September, with warm summers and mild winters.
What temperatures can I expect in Rohnert Park?
Daytime highs range from 14°C (57°F) in December to 28°C (82°F) in September. Nighttime lows range from 3°C (37°F) to 11°C (52°F). Temperatures vary considerably through the year.
How much rain does Rohnert Park get?
Annual rainfall is around 659 mm (26 in). December is the wettest month with 135 mm (5.3 in), while August is the driest with 0.3 mm (0.01 in).
How sunny is Rohnert Park?
Rohnert Park 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, Rohnert Park enjoys abundant sunshine.
Rohnert Park 3-Day Forecast
Rohnert Park (CA) 3-Day Forecast
Rohnert Park on the map
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