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Boise, ID Weather


Boise, ID climate is warm during summer when temperatures tend to be in the 70's and very cold during winter when temperatures tend to be in the 30's.

The warmest month of the year is July with an average maximum temperature of 89.20 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 23.60 degrees Fahrenheit.

Temperature variations between night and day tend to be moderate during summer with a difference that can reach 29 degrees Fahrenheit, and fairly limited during winter with an average difference of 14 degrees Fahrenheit.

The annual average precipitation at Boise is 12.19 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is March with an average rainfall of 1.41 Inches.

Weather Data

Current Conditions

(Updated: 4:53 PM MST FRI NOV 20 2009)

Fair Fair, 56°F Humidity: 21% Dewpoint: 16°F
Wind Speed: SE 11.5 MPH (10 KT) Heat Index: 56°F
Barometer: 29.54 in. Wind Chill: 53°F

Weather Forecast

(Generated: 3:39 PM MST FRI NOV 20 2009)
  Tonight: Cloudy with a chance of rain. A chance of snow after midnight. Chance of precipitation 40 percent. Lows 28 to 33. Southeast winds 10 to 20 mph in the evening...Becoming northwest up to 10 mph after midnight.
Lo: 31°F
Hi: 42°F Saturday: Decreasing clouds. A 30 percent chance of snow showers in the morning. Much cooler. Highs 39 to 44. West winds up to 10 mph in the morning...Becoming northwest in the afternoon.
Lo: 28°F
Hi: 43°F Sunday: Snow in the morning...Then rain and snow showers in the afternoon. Chance of precipitation 80 percent. Light snow accumulations possible. Highs 39 to 46. Breezy. East winds 15 to 25 mph.
Lo: 29°F
Hi: 45°F Monday: Mostly cloudy. Highs 40 to 49. Lows 23 to 33.
Lo: 29°F
Hi: 45°F Tuesday: Mostly cloudy. Highs 40 to 49. Lows 23 to 33.
Lo: 29°F
Hi: 45°F Tuesday: Mostly cloudy. Highs 40 to 49. Lows 23 to 33.
Lo: 29°F
Hi: 43°F Wednesday: Partly cloudy. Highs 38 to 47. Lows 27 to 34.
Lo: 31°F

Moon, Sunrise and Sunset

Waxing Crescent Moon Moon Phase: Waxing Crescent Moon Civil Twilight:
7:13 AM MST
Sunrise:
7:44 AM MST
Sunset:
5:15 PM MST
Civil Twilight:
5:46 PM MST

Normal Climate

Normal Temperatures

(BOISE AIR TERMINAL Weather station, 3.31 miles from Boise)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Max °F 36.7 44.5 53.6 61.7 70.7 80.3 89.2 88.0 77.2 64.3 47.5 37.2 62.6
Mean °F 30.2 36.7 43.8 50.6 58.6 67.2 74.7 73.9 64.2 52.8 39.9 30.6 51.9
Min °F 23.6 28.8 34.0 39.4 46.6 54.2 60.3 59.8 51.2 41.3 32.4 24.1 41.3

Normal Precipitation

(BOISE AIR TERMINAL Weather station, 3.31 miles from Boise)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Inch 1.39 1.14 1.41 1.27 1.27 0.74 0.39 0.30 0.76 0.76 1.38 1.38 12.19