Yountville, CA Weather

Yountville, CA climate is warm during summer when temperatures tend to be in the 70's and cold during winter when temperatures tend to be in the 40's.

The warmest month of the year is July with an average maximum temperature of 9.99 degrees Fahrenheit, while the coldest month of the year is December with an average minimum temperature of 9.99 degrees Fahrenheit.

Temperature variations between night and day tend to be relatively big during summer with a difference that can reach 35 degrees Fahrenheit, and moderate during winter with an average difference of 21 degrees Fahrenheit.

The annual average precipitation at Yountville is 9.99 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is January with an average rainfall of 7.46 Inches.

Weather Data

Normal Climate

Normal Temperatures

(SAINT HELENA Weather station, 9.05 miles from Yountville)

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Max °F	58.0	62.5	66.3	73.0	79.2	85.5	89.3	88.3	85.6	77.7	65.1	58.4	74.1
Mean °F	47.9	51.4	54.1	58.6	63.6	68.8	71.6	71.0	68.6	62.5	53.4	47.6	59.9
Min °F	37.8	40.3	41.8	44.2	48.0	52.1	53.9	53.6	51.6	47.2	41.6	36.7	45.7

Normal Precipitation