Shell Ridge, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Shell Ridge, a community in Contra Costa County, California.
This Afternoon
85°F
Sunny
Sunny. High near 85, with temperatures falling to around 83 in the afternoon. West northwest wind 5 to 8 mph.
7-day forecast for Shell Ridge
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 85°F | Sunny | 5 to 8 mph WNW | 0% |
| Tonight | 57°F | Mostly Clear | 7 mph SSW | 0% |
| Saturday | 89°F | Sunny | 7 mph SW | 0% |
| Saturday Night | 57°F | Partly Cloudy | 7 mph SSW | 0% |
| Sunday | 79°F | Partly Sunny | 8 mph SW | 2% |
| Sunday Night | 56°F | Mostly Cloudy | 8 mph SW | 2% |
| Monday | 81°F | Sunny | 9 mph WSW | 0% |
| Monday Night | 57°F | Mostly Clear | 6 to 9 mph SW | 0% |
| Tuesday | 85°F | Sunny | 7 mph WSW | 0% |
| Tuesday Night | 57°F | Mostly Clear | 2 to 7 mph SW | 0% |
| Wednesday | 96°F | Sunny | 1 to 5 mph W | 0% |
| Wednesday Night | 62°F | Mostly Clear | 5 mph WSW | 0% |
| Thursday | 97°F | Sunny | 1 to 7 mph WSW | 0% |
| Thursday Night | 62°F | Mostly Clear | 3 to 7 mph WSW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Shell Ridge (37.906, -122.034). Updated through the day.
Growing snapshot for Shell Ridge
Last spring frost
Mar 8
First fall frost
Dec 22
Growing season
282 days
Hardiness zone
9b
More local growing data for Shell Ridge: nearby ZIP 94596 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
Danville
Diablo
Discovery Bay
East Richmond Heights
El Cerrito
El Sobrante
Hercules
Knightsen
Lafayette
Martinez
Montalvin Manor
Moraga
Mountain View
Climate data from the nearest NOAA station, Mt Diablo Junction, Ca (5.8 mi from Shell Ridge). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.