Alhambra Valley, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Alhambra Valley, a community in Contra Costa County, California.

This Afternoon

81°F

Sunny

Sunny. High near 81, with temperatures falling to around 79 in the afternoon. West southwest wind around 10 mph.

7-day forecast for Alhambra Valley

When	Temp	Forecast	Wind	Precip
This Afternoon	81°F	Sunny	10 mph WSW	0%
Tonight	57°F	Mostly Clear	12 mph SW	0%
Saturday	84°F	Sunny	5 to 10 mph SW	0%
Saturday Night	57°F	Partly Cloudy	12 mph SW	0%
Sunday	75°F	Partly Sunny	8 to 12 mph SW	1%
Sunday Night	56°F	Mostly Cloudy	13 mph SW	2%
Monday	76°F	Sunny	9 to 13 mph SW	0%
Monday Night	56°F	Mostly Clear	9 to 13 mph SW	0%
Tuesday	81°F	Sunny	5 to 9 mph SW	0%
Tuesday Night	57°F	Mostly Clear	5 to 10 mph SW	0%
Wednesday	92°F	Sunny	1 to 6 mph W	0%
Wednesday Night	61°F	Mostly Clear	6 mph WSW	0%
Thursday	92°F	Sunny	2 to 8 mph WSW	0%
Thursday Night	61°F	Mostly Clear	8 mph SW	0%

Forecast source: National Weather Service (api.weather.gov) for Alhambra Valley (37.967, -122.136). Updated through the day.

Growing snapshot for Alhambra Valley

Last spring frost

Feb 28

First fall frost

Nov 22

Growing season

266 days

Hardiness zone

More local growing data for Alhambra Valley: nearby ZIP 94553 weather · frost dates · planting calendar · California frost dates

Nearby towns & communities

Acalanes Ridge Alamo Antioch Bay Point Bayview Benicia Bethel Island Blackhawk Brentwood Byron Castle Hill Clayton Clyde Concord Contra Costa Centre Crockett Danville Diablo Discovery Bay East Richmond Heights El Cerrito El Sobrante Hercules Knightsen Lafayette Martinez Montalvin Manor Moraga Mountain View Norris Canyon

All California locations ›

Climate data from the nearest NOAA station, Martinez Wtp, Ca (3.4 mi from Alhambra Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.