Chinook, MT Weather

Chinook, MT climate is mild during summer when temperatures tend to be in the 60's and extremely cold during winter when temperatures tend to be in the 10's.

The warmest month of the year is July with an average maximum temperature of 84.00 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of -0.50 degrees Fahrenheit.

Temperature variations between night and day tend to be relatively big during summer with a difference that can reach 32 degrees Fahrenheit, and moderate during winter with an average difference of 27 degrees Fahrenheit.

The annual average precipitation at Chinook is 13.06 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is May with an average rainfall of 2.29 Inches.

Weather Data

Current Conditions

(Updated: 6:53 PM MST SUN NOV 22 2009)

Fair, 37°F	Humidity: 54%	Dewpoint: 22°F
	Wind Speed: SW 9.2 MPH (8 KT)	Heat Index: 37°F
	Barometer: 29.74 in.	Wind Chill: 30°F

Weather Forecast

(Generated: 2:35 PM MST SUN NOV 22 2009)

		Tonight: Mostly cloudy with a 20 percent chance of snow showers. Lows 20 to 30. Southwest winds 5 to 15 mph.
	Lo: 26°F
	Hi: 43°F	Monday: Partly cloudy. Highs 40 to 45. West winds 10 to 20 mph. Gusts up to 30 mph in the afternoon.
	Lo: 26°F
	Hi: 43°F	Tuesday: Windy. Mostly cloudy in the morning...Then becoming partly cloudy. Highs 40 to 45. Southwest winds 10 to 20 mph... Increasing to west 25 to 35 mph in the afternoon. Gusts up to 55 mph.
	Lo: 23°F
	Hi: 48°F	Wednesday: Partly cloudy. Highs 45 to 50.
	Lo: 28°F
	Hi: 51°F	Thanksgiving day: Mostly clear. Lows 25 to 30. Highs 45 to 55.
	Lo: 31°F
	Hi: 51°F	Friday: Partly cloudy. Lows 25 to 35. Highs 45 to 55.
	Lo: 28°F
	Hi: 51°F	Saturday: Mostly cloudy with a 20 percent chance of rain and snow showers. Lows 25 to 30. Highs 45 to 55.
	Lo: 26°F

Moon, Sunrise and Sunset

	Moon Phase: Waxing Crescent Moon	Civil Twilight: 6:59 AM MST	Sunrise: 7:34 AM MST
		Sunset: 4:30 PM MST	Civil Twilight: 5:05 PM MST

Normal Climate

Normal Temperatures

(CHINOOK Weather station, 0.69 miles from Chinook)

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Max °F	25.9	33.4	45.1	58.9	69.1	77.8	84.0	83.7	72.1	59.2	40.3	29.7	56.6
Mean °F	12.7	19.8	30.9	44.4	55.0	63.9	68.6	67.6	55.4	43.2	26.9	16.7	42.1
Min °F	-0.5	6.2	16.7	29.9	40.8	49.9	53.1	51.4	38.6	27.2	13.4	3.7	27.5

Normal Precipitation