Benicia, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Benicia, a city in Contra Costa County, California.
This Afternoon
81°F
Sunny
Sunny, with a high near 81. West wind 8 to 12 mph, with gusts as high as 18 mph.
7-day forecast for Benicia
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Sunny | 8 to 12 mph W | 0% |
| Tonight | 58°F | Mostly Clear | 8 to 12 mph WSW | 0% |
| Saturday | 84°F | Sunny | 7 to 10 mph WSW | 0% |
| Saturday Night | 59°F | Partly Cloudy | 10 mph WSW | 0% |
| Sunday | 76°F | Partly Sunny | 12 mph SW | 0% |
| Sunday Night | 58°F | Mostly Cloudy | 12 mph SW | 1% |
| Monday | 77°F | Mostly Sunny | 13 mph SW | 0% |
| Monday Night | 58°F | Mostly Clear | 8 to 13 mph SW | 0% |
| Tuesday | 80°F | Sunny | 10 mph SW | 0% |
| Tuesday Night | 58°F | Mostly Clear | 3 to 10 mph SW | 0% |
| Wednesday | 91°F | Sunny | 6 mph W | 0% |
| Wednesday Night | 62°F | Mostly Clear | 6 mph WSW | 0% |
| Thursday | 91°F | Sunny | 3 to 9 mph WSW | 0% |
| Thursday Night | 62°F | Partly Cloudy | 6 to 9 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Benicia (38.073, -122.155). Updated through the day.
Growing snapshot for Benicia
Last spring frost
Jan 17
First fall frost
Dec 27
Growing season
346 days
Hardiness zone
9b
More local growing data for Benicia: nearby ZIP 94569 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Vallejo, Ca (3.9 mi from Benicia). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.