Sun River, MT has a subarctic climate with long and cold winters and short, warm summers. During the winter months, temperatures can drop well below freezing while the summers are mild and pleasant with temperatures ranging from the mid 30s to low 70s. Precipitation is generally moderate throughout the year, consisting mostly of snow during the winter and rain during the spring and fall seasons. Due to its location in western Montana, Sun River experiences a variety of weather conditions depending on the season which can range from sunny days to storms or even blizzards.
Sun River, Montana gets 12 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Sun River averages 41 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 185 sunny days per year in Sun River. The US average is 205 sunny days.
Sun River gets some kind of precipitation, on average, 80 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 15
Rain: averages 12 inches of rain a year
Snow: averages 41 inches of snow a year