Danville, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Danville, a town in Contra Costa County, California.
Overnight
58°F
Clear
Clear, with a low around 58. South southeast wind around 2 mph.
7-day forecast for Danville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Clear | 2 mph SSE | 0% |
| Tuesday | 99°F | Sunny | 2 to 7 mph SW | 0% |
| Tuesday Night | 58°F | Clear | 2 to 6 mph SSW | 0% |
| Wednesday | 96°F | Sunny | 2 to 7 mph SW | 0% |
| Wednesday Night | 58°F | Mostly Clear | 2 to 6 mph WSW | 0% |
| Thursday | 93°F | Sunny | 2 to 7 mph WSW | 0% |
| Thursday Night | 60°F | Mostly Clear | 2 to 7 mph WSW | 0% |
| Friday | 97°F | Sunny | 2 to 7 mph WSW | 0% |
| Friday Night | 62°F | Mostly Clear | 3 to 7 mph WSW | 0% |
| Saturday | 98°F | Sunny | 3 to 8 mph WSW | 0% |
| Saturday Night | 62°F | Mostly Clear | 5 to 8 mph SW | 0% |
| Sunday | 91°F | Sunny | 5 to 9 mph SW | 0% |
| Sunday Night | 58°F | Mostly Clear | 9 mph SW | 0% |
| Monday | 85°F | Sunny | 9 mph SW | 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
Nearby towns & communities
Acalanes Ridge
Alamo
Alhambra Valley
Antioch
Bay Point
Bayview
Benicia
Bethel Island
Blackhawk
Brentwood
Byron
Castle Hill
Clayton
Clyde
Concord
Contra Costa Centre
Crockett
Diablo
Discovery Bay
East Richmond Heights
El Cerrito
El Sobrante
Hercules
Knightsen
Lafayette
Martinez
Montalvin Manor
Moraga
Mountain View
Norris Canyon
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 Aug 4, 2026.