El Sobrante, CA Weather & Growing Conditions

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

This Afternoon

76°F

Sunny

Sunny. High near 76, with temperatures falling to around 74 in the afternoon. Southwest wind around 10 mph.

7-day forecast for El Sobrante

When	Temp	Forecast	Wind	Precip
This Afternoon	76°F	Sunny	10 mph SW	0%
Tonight	57°F	Partly Cloudy	9 mph SSW	0%
Saturday	78°F	Sunny	7 to 10 mph SSW	0%
Saturday Night	57°F	Mostly Cloudy	9 mph SSW	0%
Sunday	69°F	Partly Sunny	10 mph SW	1%
Sunday Night	56°F	Mostly Cloudy	10 mph SW	2%
Monday	70°F	Mostly Sunny	9 to 13 mph SW	0%
Monday Night	57°F	Partly Cloudy	8 to 13 mph SW	0%
Tuesday	74°F	Mostly Sunny	7 to 10 mph SW	0%
Tuesday Night	57°F	Mostly Clear	3 to 10 mph SSW	0%
Wednesday	86°F	Sunny	3 to 7 mph WSW	0%
Wednesday Night	60°F	Mostly Clear	3 to 7 mph SW	0%
Thursday	85°F	Sunny	3 to 9 mph SW	0%
Thursday Night	60°F	Partly Cloudy	6 to 9 mph SW	0%

Forecast source: National Weather Service (api.weather.gov) for El Sobrante (37.974, -122.303). Updated through the day.

Growing snapshot for El Sobrante

Last spring frost

Jan 4

First fall frost

Jan 2

Growing season

365 days

Hardiness zone

10a

More local growing data for El Sobrante: nearby ZIP 94803 weather · frost dates · planting calendar · California frost dates

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Climate data from the nearest NOAA station, Richmond, Ca (5.8 mi from El Sobrante). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.