Vallejo, CA has a Mediterranean climate with hot and dry summers and mild, wet winters. Average highs in the summer range from the upper 50s to the mid 70s, while winter temperatures tend to stay in the high 40s to low 50s. Precipitation is fairly evenly distributed throughout the year, with most rain falling in the winter months of December through March. During those months, there is an average of 15-20 inches of rain each month. Vallejo also receives occasional snowfall in the winter but it rarely accumulates to more than a few inches on the ground.
Vallejo (zip 94590), California gets 23 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Vallejo (zip 94590) averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 260 sunny days per year in Vallejo (zip 94590). The US average is 205 sunny days.
Vallejo (zip 94590) gets some kind of precipitation, on average, 67 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 83 degrees
Winter Low: the January low is 37
Rain: averages 23 inches of rain a year
Snow: averages 0 inches of snow a year