Yountville (CA) Weather & Climate: Best Time to Visit

Temperatures in Yountville, California, United States of America, vary greatly throughout the year. July is the hottest month at 32°C (90°F), while January is the coldest at 14°C (57°F).

With around 660 mm (26 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 October. May is the sunniest month, averaging 10.3 hours of sunshine per day.

Monthly Temperature in Yountville

The climate in Yountville is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a very warm 32°C (90°F) in July to a moderate 14°C (57°F) in the coolest month, January.

Nights vary from 13°C (55°F) in July to around 3°C (37°F) during the colder months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Yountville

Generally, Yountville receives mid-range precipitation levels, with 660 mm (26 in) annually. The climate in Yountville shows significant variation throughout the year. Expect high rainfall in December, the wettest month, with an average of 139 mm (5.5 in) of precipitation over 12 rainy days.

In contrast, the driest month August offers drier and sunnier days, with around 0 mm (0 in) of rainfall over 0 rainy days. For more details, please visit our Yountville 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 Yountville

For those who appreciate different seasons, Yountville 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

Data from: Healdsburg, the United States of America (49 KM, 31 Miles).

Daily hours of sunshine

Data from: Healdsburg, the United States of America (49 KM, 31 Miles).

Daily percentage of sunshine

Data from: Healdsburg, the United States of America (49 KM, 31 Miles).

Yountville (CA) 3-Day Forecast

10-Day Forecast

Select a Month

Check the conditions for any month of the year.

Best Time to Visit Yountville

Yountville's weather is most enjoyable during March, April, May, June, September, October and November, with comfortable temperatures from 19°C (66°F) to 30°C (86°F). The moderate conditions ensure pleasant weather for exploring the area. Expect varied weather during this period with rainfall between 5 mm (0.2 in) and 113 mm (4.4 in), providing a good balance of sunny and rainy days.

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.