Weather By Day

March Helena Weather 
March Helena Weather
Record High: 78°F
Normal High: 47°F
Normal Low: 24°F
Record Low: -30°F
Avg Monthly Rain: 0.63"
Rec 1 Day Rain: 0.78"
Avg Monthly Snow: 7.4"
Rec 1 Day Snow: 10.3"

Helena Weather In March

The hottest day in Helena Montana in March for the past 70 years was 78 degrees Fahrenheit, most recently encountered on March 30, 2004, while the normal high temperature is 47. The lowest documented temperature for Helena for the past 70 years in March was -30 most recently encountered on March 24, 1955, while the regular low temperature for a given day during the month is 24.

United States NWS historical Helena March Weather data records that on March 7, 1951, the high temperature did not exceed -10 degrees Fahrenheit, the lowest high measured in Helena in the past 70 years. The Weather Service additionally shows that on March 27, 1946, the low for the day did not drop below 49 degrees, the highest low temperature in Helena in the last 70 years.

NWS data indicates that the daily high temperature in Helena on March First averages 38 degrees Fahrenheit and the high on the last day of March averages 49 degrees. The low recorded temperature in Helena on March First averages 20 degrees Fahrenheit and the low temperature on the final day of March averages 28 degrees.

Helena usually receives an average of 0.63 inches of precipitation during March. The most precipitation recorded on a single day in March, according to March Helena Weather data, was 0.78 inches on March 20, 1898. Helena receives an average of 7.4 inches of snow in March. The highest snowfall on a single day in March was 10.3 inches on March 5, 1932.