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Bethel Island, CA Weather


Bethel Island, 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 90.70 degrees Fahrenheit, while the coldest month of the year is December with an average minimum temperature of 37.10 degrees Fahrenheit.

Temperature variations between night and day tend to be relatively big during summer with a difference that can reach 32 degrees Fahrenheit, and fairly limited during winter with an average difference of 17 degrees Fahrenheit.

The annual average precipitation at Bethel Island is 13.33 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is January with an average rainfall of 2.72 Inches.

Weather Data

Current Conditions

(Updated: 2:53 AM PST SUN NOV 23 2008)

FOG and MIST Fog And Mist, 45°F Humidity: 90% Dewpoint: 42°F
Wind Speed: CALM Heat Index: 45°F
Barometer: 30.10 in. Wind Chill: 45°F

Weather Forecast

(Generated: 5:30 PM PST SAT NOV 22 2008)
  Tonight: Partly cloudy with patchy fog. Lows in the 40s to lower 50s. West winds 5 to 10 mph.
Lo: 46°F
Hi: 65°F Sunday: Mostly sunny. Patchy fog in the morning. Highs in the 60s. East winds 5 to 10 mph.
Lo: 46°F
Hi: 60°F Monday: Partly cloudy. Highs in the upper 50s to mid 60s. East winds 5 to 10 mph.
Lo: 46°F
Hi: 60°F Tuesday: Mostly cloudy with a chance of rain. Highs in the upper 50s to mid 60s.
Lo: 46°F
Hi: 60°F Wednesday: Partly cloudy with a chance of showers. Highs in the upper 50s to mid 60s.
Lo: 46°F
Hi: 56°F Thanksgiving day: Mostly cloudy with a chance of rain. Highs in the 50s to mid 60s.
Lo: 46°F
Hi: 56°F Friday: Mostly cloudy with a chance of rain. Highs in the 50s to mid 60s.
Lo: 45°F

Moon, Sunrise and Sunset

Waning Crescent Moon Moon Phase: Waning Crescent Moon Civil Twilight:
6:26 AM PST
Sunrise:
6:55 AM PST
Sunset:
4:49 PM PST
Civil Twilight:
5:18 PM PST

Normal Climate

Normal Temperatures

(ANTIOCH PUMP PLANT #3 Weather station, 6.49 miles from Bethel Island)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Max °F 53.5 59.9 64.6 71.1 78.5 85.6 90.7 89.8 85.9 77.5 63.9 54.3 72.9
Mean °F 45.7 50.6 54.5 59.2 65.2 71.1 74.4 73.7 71.0 64.3 53.8 45.7 60.8
Min °F 37.8 41.3 44.3 47.2 51.9 56.5 58.1 57.6 56.0 51.1 43.6 37.1 48.5

Normal Precipitation

(ANTIOCH PUMP PLANT #3 Weather station, 6.49 miles from Bethel Island)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Inch 2.72 2.51 2.16 0.73 0.47 0.09 0.03 0.03 0.24 0.76 1.70 1.89 13.33