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.
Today
60°F
Light Rain
Rain. Mostly cloudy. High near 60, with temperatures falling to around 55 in the afternoon. South wind 5 to 8 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Alhambra Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 60°F | Light Rain | 5 to 8 mph S | 84% |
| Tonight | 48°F | Chance Light Rain then Mostly Cloudy | 6 to 9 mph ENE | 54% |
| Wednesday | 65°F | Sunny | 3 to 7 mph NNW | 1% |
| Wednesday Night | 48°F | Partly Cloudy | 3 to 7 mph WSW | 0% |
| Thursday | 70°F | Sunny | 3 mph WNW | 0% |
| Thursday Night | 50°F | Mostly Clear | 5 mph WSW | 0% |
| Friday | 71°F | Sunny | 3 mph ENE | 0% |
| Friday Night | 49°F | Clear | 0 to 3 mph SSW | 0% |
| Saturday | 72°F | Sunny | 1 to 7 mph NE | 0% |
| Saturday Night | 51°F | Mostly Clear | 0 to 3 mph W | 0% |
| Sunday | 71°F | Mostly Sunny | 3 mph WNW | 0% |
| Sunday Night | 51°F | Partly Cloudy | 0 to 3 mph WSW | 0% |
| Monday | 69°F | Partly Sunny | 3 mph WSW | 1% |
| Monday Night | 52°F | Partly Cloudy | 3 mph WSW | 2% |
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
9b
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
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 Nov 3, 2026.