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-6.0-2.60.76.411.716.420.119.413.78.61.1-4.57.1
Avg. Max Temperature-0.83.16.512.918.423.728.527.620.915.26.40.613.6
Avg. Min Temperature-11.3-8.2-5.1-0.14.99.211.811.26.42.1-4.3-9.70.6
Days with Max Temp of 32 C or Higher0.00.00.00.0< 0.52.07.07.01.0< 0.50.00.018.0
Days with Min Temp Below Freezing27.024.025.016.04.0< 0.50.0< 0.53.012.022.026.0158
 
Great Falls Heating and Cooling Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Heating Degree Days1358105398364237215637.091.029954393312747741
Cooling Degree Days0.00.00.00.00.054.013715047.00.00.00.0388
 
Great Falls Precipitation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Precipitation (inches)0.90.61.11.42.52.41.21.51.20.80.70.915.2
Days with Precipitation 0.01 inch or More9.08.09.09.012.012.08.08.07.06.07.08.0101
Monthly Snowfall (inches)9.68.310.67.21.70.3< 0.050.11.53.47.58.258.4
 
Other Great Falls Weather Indicators Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Average Wind Speed14.914.012.812.611.311.110.010.111.213.014.515.412.6
Clear Days5.04.04.04.05.05.013.012.010.07.05.05.079.0
Partly Cloudy Days6.06.09.08.010.011.012.011.09.09.07.08.0106
Cloudy Days19.018.018.018.017.014.06.08.011.015.018.018.0180
Percent of Possible Sunshine49.056.066.062.062.065.079.076.067.061.046.044.061.0
Avg. Relative Humidity52.064.061.559.056.056.554.548.048.551.055.060.564.0

Weather information for other cities in Montana

Portions of this site are based on the CIA World Fact Book, a public-domain work
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