Atherton, CA Weather

Atherton, CA climate is mild during summer when temperatures tend to be in the 60's and cool during winter when temperatures tend to be in the 50's.

The warmest month of the year is July with an average maximum temperature of 80.80 degrees Fahrenheit, while the coldest month of the year is December with an average minimum temperature of 38.60 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 19 degrees Fahrenheit.

The annual average precipitation at Atherton is 20.16 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is January with an average rainfall of 4.20 Inches.

Weather Data

Weather Forecast

(Generated: 4:00 PM PST TUE NOV 24 2009)

		Tonight: Clear. Lows in the upper 30s to upper 40s. West winds around 5 mph.
	Lo: 49°F
	Hi: 69°F	Wednesday: Sunny. Highs in the upper 60s. Northeast winds around 5 mph...Becoming northwest in the afternoon.
	Lo: 45°F
	Hi: 61°F	Thanksgiving day: Mostly sunny. Highs in the lower 60s. North winds around 5 mph...Becoming west in the afternoon.
	Lo: 47°F
	Hi: 61°F	Friday: Partly cloudy. Highs in the lower 60s.
	Lo: 45°F
	Hi: 61°F	Saturday: Mostly clear. Lows in the 40s. Highs in the lower 60s.
	Lo: 45°F
	Hi: 61°F	Sunday: Mostly clear. Lows in the 40s. Highs in the lower 60s.
	Lo: 45°F
	Hi: 61°F	Monday: Mostly clear. Lows in the 40s. Highs in the lower 60s.
	Lo: 45°F

Moon, Sunrise and Sunset

	Moon Phase: Waxing Gibbous Moon	Civil Twilight: 6:28 AM PST	Sunrise: 6:57 AM PST
		Sunset: 4:53 PM PST	Civil Twilight: 5:21 PM PST

Normal Climate

Normal Temperatures

(REDWOOD CITY Weather station, 2.23 miles from Atherton)

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual
Max °F	57.7	61.7	65.1	69.9	74.0	78.7	80.8	80.5	78.5	73.0	63.2	57.4	70.0
Mean °F	48.4	51.7	54.4	57.6	61.5	65.7	68.0	67.8	65.9	60.9	53.1	48.0	58.6
Min °F	39.1	41.7	43.6	45.2	48.9	52.7	55.2	55.0	53.2	48.7	42.9	38.6	47.1

Normal Precipitation