Foster, RI has a humid continental climate with four distinct seasons. Summers are warm with temperatures in the mid-70s and occasional heatwaves that can soar into the 90s. Winters are cold, with temperatures reaching as low as 0 degrees Fahrenheit during the coldest days. Spring and fall are mild, with average daytime temperatures in the 40s to 50s and nights that can dip into the 20s. The area usually receives an average of 42 inches of rainfall throughout the year, making it one of Rhode Island's rainiest areas. Snowfall averages around 30 inches annually, enough to build snowmen and go sledding but not enough for skiing or snowboarding.
Foster, Rhode Island gets 51 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Foster averages 45 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 Foster. The US average is 205 sunny days.
Foster gets some kind of precipitation, on average, 125 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 80 degrees
Winter Low: the January low is 15
Rain: averages 51 inches of rain a year
Snow: averages 45 inches of snow a year