Saranap, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Saranap, a community in Contra Costa County, California.
Tonight
48°F
Partly Cloudy
Partly cloudy, with a low around 48. North northeast wind around 5 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Saranap
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Partly Cloudy | 5 mph NNE | 7% |
| Wednesday | 67°F | Sunny | 2 to 7 mph NNW | 2% |
| Wednesday Night | 48°F | Mostly Cloudy | 5 mph SW | 2% |
| Thursday | 72°F | Patchy Fog then Mostly Sunny | 3 mph NW | 0% |
| Thursday Night | 47°F | Clear | 2 mph WSW | 0% |
| Friday | 74°F | Sunny | 0 to 3 mph NNE | 0% |
| Friday Night | 48°F | Mostly Clear | 2 mph N | 0% |
| Saturday | 75°F | Sunny | 1 to 5 mph NE | 0% |
| Saturday Night | 49°F | Mostly Clear | 2 mph NW | 0% |
| Sunday | 75°F | Sunny | 3 mph NNW | 0% |
| Sunday Night | 50°F | Partly Cloudy | 2 mph WSW | 0% |
| Monday | 72°F | Mostly Sunny | 3 mph SW | 2% |
| Monday Night | 50°F | Partly Cloudy | 3 mph SW | 2% |
| Tuesday | 73°F | Sunny | 0 to 3 mph W | 5% |
Forecast source: National Weather Service (api.weather.gov) for Saranap (37.888, -122.076). Updated through the day.
Growing snapshot for Saranap
Last spring frost
Mar 8
First fall frost
Dec 22
Growing season
282 days
Hardiness zone
9b
More local growing data for Saranap: nearby ZIP 94595 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, Mt Diablo Junction, Ca (7.6 mi from Saranap). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.