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
61°F
Light Rain
Rain. Mostly cloudy. High near 61, with temperatures falling to around 56 in the afternoon. South wind 5 to 8 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for El Sobrante
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 61°F | Light Rain | 5 to 8 mph S | 88% |
| Tonight | 49°F | Light Rain Likely then Mostly Cloudy | 6 to 9 mph E | 58% |
| Wednesday | 65°F | Sunny | 3 to 7 mph NNW | 1% |
| Wednesday Night | 49°F | Partly Cloudy | 2 to 7 mph WNW | 0% |
| Thursday | 69°F | Sunny | 3 mph NW | 0% |
| Thursday Night | 50°F | Mostly Clear | 3 mph W | 0% |
| Friday | 70°F | Sunny | 2 mph N | 0% |
| Friday Night | 50°F | Mostly Clear | 2 mph NE | 0% |
| Saturday | 72°F | Sunny | 1 to 8 mph N | 0% |
| Saturday Night | 51°F | Mostly Clear | 2 mph WNW | 0% |
| Sunday | 71°F | Mostly Sunny | 5 mph NW | 0% |
| Sunday Night | 52°F | Mostly Cloudy | 2 mph WSW | 0% |
| Monday | 69°F | Partly Sunny | 3 mph WSW | 1% |
| Monday Night | 51°F | Mostly Cloudy | 3 mph W | 2% |
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 Nov 4, 2026.