Spring Valley, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Spring Valley, a community in San Diego County, California.

This Afternoon

78°F

Sunny

Sunny, with a high near 78. West wind around 10 mph.

7-day forecast for Spring Valley

When	Temp	Forecast	Wind	Precip
This Afternoon	78°F	Sunny	10 mph W	0%
Tonight	62°F	Mostly Cloudy	0 to 5 mph S	0%
Sunday	76°F	Partly Sunny	0 to 10 mph NW	2%
Sunday Night	63°F	Mostly Cloudy	0 to 5 mph SW	3%
Monday	74°F	Mostly Sunny	0 to 10 mph S	3%
Monday Night	61°F	Partly Cloudy	0 to 10 mph SE	1%
Tuesday	76°F	Sunny	5 to 10 mph NW	0%
Tuesday Night	62°F	Mostly Clear	0 to 10 mph NW	0%
Wednesday	80°F	Sunny	5 to 10 mph NW	0%
Wednesday Night	63°F	Mostly Clear	0 to 10 mph NW	0%
Thursday	83°F	Sunny	0 to 10 mph NW	2%
Thursday Night	65°F	Mostly Clear	0 to 10 mph NW	1%
Friday	85°F	Sunny	0 to 10 mph NW	1%
Friday Night	66°F	Mostly Clear	0 to 5 mph N	0%

Forecast source: National Weather Service (api.weather.gov) for Spring Valley (32.730, -116.976). Updated through the day.

Growing snapshot for Spring Valley

Last spring frost

Jan 6

First fall frost

Dec 21

Growing season

350 days

Hardiness zone

10b

More local growing data for Spring Valley: nearby ZIP 91977 weather · frost dates · planting calendar · California frost dates

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Climate data from the nearest NOAA station, El Cajon, Ca (6.4 mi from Spring Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.