St. Johns, AZ has a mild climate year round, with hot and dry summers and cool winters. During the summer months, temperatures typically range in the high 90s during the day, while at night they may dip down to the mid-70s. Winters are generally much cooler with day time highs averaging in the 50s and nighttime lows rarely dropping below freezing. This desert climate receives very little rainfall each year, usually only around 8 inches annually. Despite this low average rainfall, St. Johns experiences some snowfall most winters due to its high elevation of nearly 5,000 feet above sea level.
St. Johns, Arizona gets 11 inches of rain, on average, per year. The US average is 38 inches of rain per year.
St. Johns averages 8 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 272 sunny days per year in St. Johns. The US average is 205 sunny days.
St. Johns gets some kind of precipitation, on average, 48 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 91 degrees
Winter Low: the January low is 21
Rain: averages 11 inches of rain a year
Snow: averages 8 inches of snow a year