Johnston, RI has a humid continental climate with warm summers and cold winters. The average temperature in the summer is around 70 degrees Fahrenheit and the average temperature in the winter is around 30 degrees Fahrenheit. Precipitation is fairly common throughout the year, with an average annual rainfall of approximately 43 inches. The area can experience moderate snowfall during the winter months, with an average of 18 inches per year. Humidity levels are generally high in Johnston throughout the year, making it necessary to stay cool during hot summer days.
Johnston, Rhode Island gets 50 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Johnston 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. The US average is 205 sunny days.
Johnston 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