Great Falls
The tables below display average monthly climate and weather indicators in Great Falls Montana.
Temperature by: Fahrenheit / Centigrade
Great Falls Temperature |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
Avg. Temperature | 21.2 | 27.4 | 33.3 | 43.6 | 53.1 | 61.6 | 68.2 | 66.9 | 56.6 | 47.5 | 33.9 | 23.9 | 44.8 |
Avg. Max Temperature | 30.6 | 37.5 | 43.7 | 55.3 | 65.2 | 74.6 | 83.3 | 81.6 | 69.6 | 59.3 | 43.5 | 33.1 | 56.4 |
Avg. Min Temperature | 11.6 | 17.2 | 22.8 | 31.9 | 40.9 | 48.6 | 53.2 | 52.2 | 43.5 | 35.8 | 24.3 | 14.6 | 33.1 |
Days with Max Temp of 90 F or Higher | 0.0 | 0.0 | 0.0 | 0.0 | < 0.5 | 2.0 | 7.0 | 7.0 | 1.0 | < 0.5 | 0.0 | 0.0 | 18.0 |
Days with Min Temp Below Freezing | 27.0 | 24.0 | 25.0 | 16.0 | 4.0 | < 0.5 | 0.0 | < 0.5 | 3.0 | 12.0 | 22.0 | 26.0 | 158 |
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Great Falls Heating and Cooling |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
Heating Degree Days | 1358 | 1053 | 983 | 642 | 372 | 156 | 37.0 | 91.0 | 299 | 543 | 933 | 1274 | 7741 |
Cooling Degree Days | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 54.0 | 137 | 150 | 47.0 | 0.0 | 0.0 | 0.0 | 388 |
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Great Falls Precipitation |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
Precipitation (inches) | 0.9 | 0.6 | 1.1 | 1.4 | 2.5 | 2.4 | 1.2 | 1.5 | 1.2 | 0.8 | 0.7 | 0.9 | 15.2 |
Days with Precipitation 0.01 inch or More | 9.0 | 8.0 | 9.0 | 9.0 | 12.0 | 12.0 | 8.0 | 8.0 | 7.0 | 6.0 | 7.0 | 8.0 | 101 |
Monthly Snowfall (inches) | 9.6 | 8.3 | 10.6 | 7.2 | 1.7 | 0.3 | < 0.05 | 0.1 | 1.5 | 3.4 | 7.5 | 8.2 | 58.4 |
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Other Great Falls Weather Indicators |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
Average Wind Speed | 14.9 | 14.0 | 12.8 | 12.6 | 11.3 | 11.1 | 10.0 | 10.1 | 11.2 | 13.0 | 14.5 | 15.4 | 12.6 |
Clear Days | 5.0 | 4.0 | 4.0 | 4.0 | 5.0 | 5.0 | 13.0 | 12.0 | 10.0 | 7.0 | 5.0 | 5.0 | 79.0 |
Partly Cloudy Days | 6.0 | 6.0 | 9.0 | 8.0 | 10.0 | 11.0 | 12.0 | 11.0 | 9.0 | 9.0 | 7.0 | 8.0 | 106 |
Cloudy Days | 19.0 | 18.0 | 18.0 | 18.0 | 17.0 | 14.0 | 6.0 | 8.0 | 11.0 | 15.0 | 18.0 | 18.0 | 180 |
Percent of Possible Sunshine | 49.0 | 56.0 | 66.0 | 62.0 | 62.0 | 65.0 | 79.0 | 76.0 | 67.0 | 61.0 | 46.0 | 44.0 | 61.0 |
Avg. Relative Humidity | 52.0 | 64.0 | 61.5 | 59.0 | 56.0 | 56.5 | 54.5 | 48.0 | 48.5 | 51.0 | 55.0 | 60.5 | 64.0 |
Weather information for other cities in Montana