Alto, CA enjoys a pleasant, Mediterranean climate with mild temperatures and moist air year round. The average temperature in Alto is around 60°F, with the coldest temperatures occurring in December and January when lows can reach into the 40s. Summers are warmer with highs often reaching into the 80s in July and August. Precipitation is fairly consistent throughout the year, averaging 25-30 inches annually. The region experiences warm, sunny summers and cool winters with occasional rain showers and an occasional snowfall during the winter months.
Alto, California gets 41 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Alto 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 Alto. The US average is 205 sunny days.
Alto gets some kind of precipitation, on average, 78 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 77 degrees
Winter Low: the January low is 43
Rain: averages 41 inches of rain a year
Snow: averages 0 inches of snow a year