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.
Overnight
56°F
Partly Cloudy
Partly cloudy, with a low around 56. South southwest wind around 8 mph.
7-day forecast for El Sobrante
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Partly Cloudy | 8 mph SSW | 0% |
| Tuesday | 80°F | Haze then Sunny | 7 to 13 mph SSW | 0% |
| Tuesday Night | 56°F | Partly Cloudy | 7 to 12 mph SW | 0% |
| Wednesday | 77°F | Mostly Sunny | 7 to 12 mph SW | 0% |
| Wednesday Night | 56°F | Partly Cloudy | 6 to 12 mph SW | 0% |
| Thursday | 77°F | Sunny | 6 to 10 mph SW | 0% |
| Thursday Night | 57°F | Mostly Clear | 6 to 10 mph SW | 0% |
| Friday | 83°F | Sunny | 6 to 10 mph SW | 0% |
| Friday Night | 58°F | Mostly Clear | 7 to 10 mph SW | 0% |
| Saturday | 81°F | Sunny | 6 to 12 mph SW | 0% |
| Saturday Night | 59°F | Mostly Clear | 12 mph SSW | 0% |
| Sunday | 78°F | Sunny | 9 to 13 mph SSW | 0% |
| Sunday Night | 58°F | Mostly Clear | 14 mph SSW | 0% |
| Monday | 73°F | Sunny | 14 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 Aug 4, 2026.