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Lewiston, CA Weather


Lewiston, CA climate is warm during summer when temperatures tend to be in the 70's and cold during winter when temperatures tend to be in the 40's.

The warmest month of the year is July with an average maximum temperature of 91.90 degrees Fahrenheit, while the coldest month of the year is December with an average minimum temperature of 31.20 degrees Fahrenheit.

Temperature variations between night and day tend to be big during summer with a difference that can reach 40 degrees Fahrenheit, and fairly limited during winter with an average difference of 18 degrees Fahrenheit.

The annual average precipitation at Lewiston is 32.83 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is January with an average rainfall of 5.94 Inches.

Weather Data

Current Conditions

(Updated: 8:53 AM PST TUE NOV 24 2009)

Fair Fair, 48°F Humidity: 71% Dewpoint: 39°F
Wind Speed: CALM Heat Index: 48°F
Barometer: 30.23 in. Wind Chill: 48°F

Weather Forecast

(Generated: 2:45 AM PST TUE NOV 24 2009)
Hi: 61°F Today: Mostly sunny. Patchy fog early in the morning. Highs in the lower 60s.
Lo: 34°F
Hi: 63°F Wednesday: Sunny in the morning then becoming partly cloudy. Highs 57 to 67.
Lo: 37°F
Hi: 61°F Thanksgiving day: Mostly cloudy. Slight chance of rain. Highs 55 to 65.
Lo: 35°F
Hi: 52°F Friday: Mostly cloudy in the morning then becoming partly cloudy. Chance of rain showers and snow showers. Highs 46 to 56.
Lo: 34°F
Hi: 55°F Saturday: Partly cloudy. Lows 28 to 38. Highs 49 to 59.
Lo: 34°F
Hi: 55°F Sunday: Partly cloudy. Lows 28 to 38. Highs 49 to 59.
Lo: 34°F
Hi: 55°F Monday: Partly cloudy. Lows 28 to 38. Highs 49 to 59.
Lo: 34°F

Moon, Sunrise and Sunset

Waxing Gibbous Moon Moon Phase: Waxing Gibbous Moon Civil Twilight:
6:37 AM PST
Sunrise:
7:07 AM PST
Sunset:
4:47 PM PST
Civil Twilight:
5:17 PM PST

Normal Climate

Normal Temperatures

(TRINITY RIVER HATCHERY Weather station, 1.59 miles from Lewiston)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Max °F 47.2 53.3 58.6 65.6 74.8 83.9 91.9 91.3 84.9 73.2 54.6 46.7 68.8
Mean °F 39.3 43.0 46.6 51.2 58.5 65.9 72.1 71.0 64.8 55.9 44.8 39.0 54.3
Min °F 31.3 32.6 34.5 36.7 42.1 47.8 52.2 50.6 44.7 38.6 34.9 31.2 39.8

Normal Precipitation

(TRINITY RIVER HATCHERY Weather station, 1.59 miles from Lewiston)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Inch 5.94 5.26 4.93 2.04 1.42 0.63 0.21 0.25 0.84 1.91 4.44 4.96 32.83