Helena, MT has a continental climate, with hot summers and cold winters. Average temperatures range from the low 90s in summer to the mid-20s in winter. Precipitation is moderate throughout the year, with around 17 inches falling annually. The area's climate can be unpredictable, as temperatures can swing widely during any season. During summer months, thunderstorms are common and can bring heavy rainfall and strong winds. Winters tend to be snowy and cold, with temperatures often dropping below zero for prolonged periods of time.
Helena, Montana gets 13 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Helena averages 42 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 189 sunny days per year in Helena. The US average is 205 sunny days.
Helena gets some kind of precipitation, on average, 90 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 14
Rain: averages 13 inches of rain a year
Snow: averages 42 inches of snow a year