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Sidney, MT Weather


Sidney, MT climate is warm during summer when temperatures tend to be in the 70'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 86.30 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 2.70 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 Sidney is 14.31 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is June with an average rainfall of 2.80 Inches.

Weather Data

Current Conditions

(Updated: 12:15 PM MST SUN NOV 8 2009)

Partly Cloudy Partly Cloudy, 55°F Humidity: 38% Dewpoint: 30°F
Wind Speed: SW 10.4 MPH (9 KT) Heat Index: 55°F
Barometer: 29.89 in. Wind Chill: 52°F

Weather Forecast

(Generated: 2:43 AM MST SUN NOV 08 2009)
Hi: 55°F Today: Sunny in the morning...Then becoming partly cloudy. Highs in the mid 50s. Light and variable winds...Becoming southwest 10 to 20 mph in the afternoon.
Lo: 29°F
Hi: 51°F Monday: Sunny. Highs in the lower 50s. South winds 10 to 15 mph.
Lo: 29°F
Hi: 59°F Tuesday: Partly cloudy. Highs in the upper 50s. South winds 10 to 20 mph.
Lo: 31°F
Hi: 55°F Veterans day: Mostly cloudy. Highs in the mid 50s. Lows in the lower 30s.
Lo: 31°F
Hi: 50°F Thursday: A slight chance of rain showers. Highs around 50.
Lo: 29°F
Hi: 45°F Friday: Partly cloudy. Highs in the mid 40s. Lows in the upper 20s.
Lo: 29°F
Hi: 45°F Saturday: Partly cloudy. Highs in the mid 40s. Lows in the upper 20s.
Lo: 29°F

Moon, Sunrise and Sunset

Waning Gibbous Moon Moon Phase: Waning Gibbous Moon Civil Twilight:
6:17 AM MST
Sunrise:
6:50 AM MST
Sunset:
4:29 PM MST
Civil Twilight:
5:02 PM MST

Normal Climate

Normal Temperatures

(SIDNEY Weather station, 0.96 miles from Sidney)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Max °F 24.5 33.0 45.6 60.9 72.6 80.6 86.3 85.9 74.0 60.3 40.0 28.1 57.7
Mean °F 13.6 21.9 33.1 46.3 58.0 66.4 71.2 70.3 59.0 47.0 29.7 17.8 44.5
Min °F 2.7 10.7 20.6 31.6 43.3 52.1 56.1 54.6 44.0 33.6 19.4 7.5 31.4

Normal Precipitation

(SIDNEY Weather station, 0.96 miles from Sidney)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Inch 0.41 0.36 0.56 1.07 2.02 2.80 2.14 1.31 1.50 1.02 0.63 0.49 14.31