Danville, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Danville, a town in Contra Costa County, California.
This Afternoon
83°F
Sunny
Sunny. High near 83, with temperatures falling to around 81 in the afternoon. West northwest wind around 7 mph.
7-day forecast for Danville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 83°F | Sunny | 7 mph WNW | 0% |
| Tonight | 55°F | Mostly Clear | 5 mph SSW | 0% |
| Saturday | 87°F | Sunny | 2 to 6 mph SSW | 0% |
| Saturday Night | 55°F | Mostly Cloudy | 3 mph SW | 0% |
| Sunday | 78°F | Partly Sunny | 6 mph SW | 3% |
| Sunday Night | 55°F | Mostly Cloudy | 6 mph SW | 3% |
| Monday | 80°F | Mostly Sunny | 5 to 8 mph WSW | 0% |
| Monday Night | 55°F | Mostly Clear | 2 to 8 mph SW | 0% |
| Tuesday | 85°F | Sunny | 2 to 7 mph WSW | 0% |
| Tuesday Night | 56°F | Mostly Clear | 0 to 7 mph SW | 0% |
| Wednesday | 96°F | Sunny | 0 to 5 mph WNW | 0% |
| Wednesday Night | 61°F | Mostly Clear | 0 to 5 mph WNW | 0% |
| Thursday | 96°F | Sunny | 0 to 6 mph W | 0% |
| Thursday Night | 60°F | Mostly Clear | 1 to 6 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Danville (37.812, -121.970). Updated through the day.
Growing snapshot for Danville
Last spring frost
Mar 8
First fall frost
Dec 22
Growing season
282 days
Hardiness zone
9b
More local growing data for Danville: nearby ZIP 94526 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Mt Diablo Junction, Ca (5.4 mi from Danville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.