Johnston, Rhode Island is located in the humid subtropical climate zone. Summers are typically hot and muggy with occasional bouts of high heat and humidity. Winters are mild but can become quite cold at times, with frequent snowfall in the months of November through April. Rainfall is abundant throughout the year on average, totaling roughly 48 inches over 12 months. The spring and summer months tend to be sunnier than the colder autumn and winter seasons.
Johnston (zip 02919), Rhode Island gets 50 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Johnston (zip 02919) averages 37 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 201 sunny days per year in Johnston (zip 02919). The US average is 205 sunny days.
Johnston (zip 02919) gets some kind of precipitation, on average, 126 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 18
Rain: averages 50 inches of rain a year
Snow: averages 37 inches of snow a year