59910 Big Arm, MT has a climate that is typical of its continental location in the Northern Rocky Mountains. The average temperatures range from 19 to 75 degrees Fahrenheit throughout the year, with cold winters and warm summers. During the summer months, precipitation tends to be higher than during the winter months, with an average of 30 inches of annual rainfall. Winters are typically cold and dry, with snowfall occurring mainly between late October and early May. Both wind speed and humidity levels tend to stay moderate throughout the year.
Big Arm (zip 59910), Montana gets 18 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Big Arm (zip 59910) averages 43 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 151 sunny days per year in Big Arm (zip 59910). The US average is 205 sunny days.
Big Arm (zip 59910) gets some kind of precipitation, on average, 108 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 82 degrees
Winter Low: the January low is 23
Rain: averages 18 inches of rain a year
Snow: averages 43 inches of snow a year