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Nampa, ID Weather


Nampa, 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 90.50 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 20.80 degrees Fahrenheit.

Temperature variations between night and day tend to be relatively big during summer with a difference that can reach 35 degrees Fahrenheit, and fairly limited during winter with an average difference of 18 degrees Fahrenheit.

The annual average precipitation at Nampa is 11.37 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is December with an average rainfall of 1.40 Inches.

Weather Data

Current Conditions

(Updated: 1:15 AM MST WED NOV 25 2009)

Fair Fair, 23°F Humidity: 80% Dewpoint: 18°F
Wind Speed: NE 4.6 MPH (4 KT) Heat Index: 23°F
Barometer: 30.53 in. Wind Chill: 17°F

Weather Forecast

(Generated: 3:12 PM MST TUE NOV 24 2009)
  Tonight: Mostly cloudy in the evening...Then clearing. Lows 23 to 28. Light winds.
Lo: 26°F
Hi: 42°F Wednesday: Sunny. Highs 39 to 44. Light winds.
Lo: 24°F
Hi: 44°F Thanksgiving day: Mostly sunny. Haze through the day. Patchy fog in the morning. Highs 41 to 46. Southwest winds up to 10 mph in the morning...Shifting to east in the afternoon.
Lo: 33°F
Hi: 46°F Friday: Mostly cloudy with a 40 percent chance of rain showers. Highs 43 to 48.
Lo: 31°F
Hi: 44°F Saturday: Partly cloudy with a 30 percent chance of rain and snow showers. Highs 41 to 46.
Lo: 28°F
Hi: 38°F Sunday: Partly sunny. Highs 35 to 40.
Lo: 29°F
Hi: 42°F Monday: Partly cloudy. Lows 25 to 32. Highs 36 to 46.
Lo: 29°F

Moon, Sunrise and Sunset

Waxing Gibbous Moon Moon Phase: Waxing Gibbous Moon Civil Twilight:
7:20 AM MST
Sunrise:
7:51 AM MST
Sunset:
5:13 PM MST
Civil Twilight:
5:45 PM MST

Normal Climate

Normal Temperatures

(NAMPA SUGAR FACTORY Weather station, 4.18 miles from Nampa)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Max °F 37.0 44.5 55.3 63.6 72.7 82.0 90.5 89.4 78.7 66.1 49.1 38.8 64.0
Mean °F 28.9 35.1 43.2 50.0 58.2 66.4 73.3 71.8 62.1 51.1 38.7 30.1 50.7
Min °F 20.8 25.7 31.1 36.4 43.6 50.7 56.0 54.2 45.4 36.0 28.3 21.3 37.5

Normal Precipitation

(NAMPA SUGAR FACTORY Weather station, 4.18 miles from Nampa)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Inch 1.37 1.14 1.35 1.12 1.22 0.63 0.32 0.24 0.58 0.72 1.28 1.40 11.37