Alamo, CA Weather

Alamo, 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 85.20 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 39.30 degrees Fahrenheit.

Temperature variations between night and day tend to be moderate during summer with a difference that can reach 26 degrees Fahrenheit, and fairly limited during winter with an average difference of 16 degrees Fahrenheit.

The annual average precipitation at Alamo is 23.96 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is January with an average rainfall of 4.76 Inches.

Weather Data

Current Conditions

(Updated: 7:53 PM PST TUE NOV 24 2009)

Fair, 50°F	Humidity: 77%	Dewpoint: 43°F
	Wind Speed: CALM	Heat Index: 50°F
	Barometer: 30.15 in.	Wind Chill: 50°F

Moon, Sunrise and Sunset

	Moon Phase: Waxing Gibbous Moon	Civil Twilight: 6:28 AM PST	Sunrise: 6:57 AM PST
		Sunset: 4:51 PM PST	Civil Twilight: 5:20 PM PST

Normal Climate

Normal Temperatures

(MOUNT DIABLO JUNCTION Weather station, 5.89 miles from Alamo)

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Max °F	55.6	57.2	59.2	64.8	70.8	78.7	85.2	85.1	82.2	74.4	61.9	56.2	69.3
Mean °F	47.5	49.0	50.0	54.1	59.1	66.0	72.4	72.3	69.9	63.1	52.8	48.0	58.7
Min °F	39.3	40.7	40.7	43.3	47.4	53.2	59.6	59.5	57.5	51.8	43.7	39.7	48.0

Normal Precipitation