Plains, MT Weather

Plains, 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 August with an average maximum temperature of 84.10 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 16.10 degrees Fahrenheit.

Temperature variations between night and day tend to be relatively big during summer with a difference that can reach 39 degrees Fahrenheit, and fairly limited during winter with an average difference of 17 degrees Fahrenheit.

The annual average precipitation at Plains is 19.99 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is December with an average rainfall of 2.27 Inches.

Weather Data

Current Conditions

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

Overcast, 23°F	Humidity: 88%	Dewpoint: 20°F
	Wind Speed: VRB 5.8 MPH (5 KT)	Heat Index: 23°F
	Barometer: 30.22 in.	Wind Chill: 16°F

Weather Forecast

(Generated: 8:34 PM MST MON NOV 23 2009)

		Tonight: Rain and snow likely after midnight. Snow level 3500 feet. Little or no new snow accumulation. Lows in the 20s to lower 30s.
	Lo: 26°F
	Hi: 40°F	Tuesday: Rain and snow likely in the morning...Then a chance of very light snow and light rain in the afternoon. Snow level 4000 feet. Little or no new snow accumulation. Highs in the upper 30s to mid 40s.
	Lo: 26°F
	Hi: 36°F	Wednesday: Mostly cloudy with a slight chance of very light snow. Slight chance of light rain in the afternoon. Highs in the 30s to lower 40s.
	Lo: 25°F
	Hi: 35°F	Thanksgiving day: Partly cloudy. Areas of freezing fog in the morning. Highs in the 30s.
	Lo: 30°F
	Hi: 40°F	Friday: Rain and snow likely. Chance of precipitation 70 percent. Highs in the upper 30s to mid 40s.
	Lo: 26°F
	Hi: 36°F	Saturday: Mostly cloudy with a 50 percent chance of snow showers. Lows in the mid 20s to lower 30s. Highs in the mid 30s to lower 40s.
	Lo: 26°F
	Hi: 36°F	Sunday: Mostly cloudy with a 20 percent chance of snow showers. Highs in the mid 30s to lower 40s. Lows in the 20s.
	Lo: 25°F

Moon, Sunrise and Sunset

	Moon Phase: Waxing Gibbous Moon	Civil Twilight: 7:22 AM MST	Sunrise: 7:56 AM MST
		Sunset: 4:55 PM MST	Civil Twilight: 5:29 PM MST

Normal Climate

Normal Temperatures

(SAINT REGIS 1 NE Weather station, 14.45 miles from Plains)

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Max °F	31.2	38.1	48.0	58.0	67.2	75.3	83.7	84.1	73.1	58.0	39.8	31.5	57.3
Mean °F	23.7	28.8	36.7	44.6	51.9	59.3	64.8	64.6	55.3	44.0	31.8	24.6	44.2
Min °F	16.1	19.5	25.3	31.1	36.6	43.2	45.8	45.0	37.5	30.0	23.8	17.7	31.0

Normal Precipitation