Great Falls, MT Weather

Great Falls, MT climate is mild during summer when temperatures tend to be in the 60's and very cold during winter when temperatures tend to be in the 20's.

The warmest month of the year is July with an average maximum temperature of 82.00 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 11.30 degrees Fahrenheit.

Temperature variations between night and day tend to be relatively big during summer with a difference that can reach 31 degrees Fahrenheit, and moderate during winter with an average difference of 22 degrees Fahrenheit.

The annual average precipitation at Great Falls is 14.89 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is May with an average rainfall of 2.53 Inches.

Weather Data

Current Conditions

(Updated: 12:53 PM MST TUE NOV 24 2009)

Partly Cloudy, 43°F	Humidity: 43%	Dewpoint: 22°F
	Wind Speed: SW 24.2 MPH (21 KT)	Heat Index: 43°F
	Barometer: 30.14 in.	Wind Chill: 34°F

Weather Forecast

(Generated: 9:41 AM MST TUE NOV 24 2009)

	Hi: 46°F	Rest of today: Mostly cloudy. Isolated snow showers in the morning...Then isolated rain and snow showers in the afternoon. Windy. Highs 40 to 50. West winds 20 to 30 mph with gusts to 45 mph. Chance of precipitation 20 percent.
	Lo: 28°F
	Hi: 53°F	Wednesday: Mostly cloudy in the morning...Then becoming partly cloudy. Highs 50 to 55...40 to 50 in the mountains. Southwest winds 10 to 20 mph with gusts to 35 mph.
	Lo: 38°F
	Hi: 58°F	Thanksgiving day: Sunny. Highs 55 to 60. Southwest winds 15 to 25 mph with gusts to 35 mph.
	Lo: 36°F
	Hi: 51°F	Friday: Mostly cloudy with a 20 percent chance of rain and snow showers. Highs 45 to 55.
	Lo: 26°F
	Hi: 46°F	Saturday: Mostly cloudy with a 20 percent chance of snow showers. Lows 20 to 30. Highs 40 to 50.
	Lo: 26°F
	Hi: 36°F	Sunday: Partly cloudy. Highs 30 to 40. Lows 20 to 30.
	Lo: 26°F

Moon, Sunrise and Sunset

	Moon Phase: Waxing Gibbous Moon	Civil Twilight: 7:07 AM MST	Sunrise: 7:42 AM MST
		Sunset: 4:40 PM MST	Civil Twilight: 5:15 PM MST

Normal Climate

Normal Temperatures

(GREAT FALLS INTL AP Weather station, 4.28 miles from Great Falls)

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Max °F	32.1	37.7	45.3	55.6	64.7	73.9	82.0	81.2	69.6	58.0	42.1	34.2	56.4
Mean °F	21.7	26.4	33.4	42.6	51.5	60.0	66.2	65.6	55.4	45.5	32.3	24.3	43.7
Min °F	11.3	15.1	21.5	29.7	38.3	46.0	50.4	49.9	41.2	33.0	22.5	14.4	31.1

Normal Precipitation