San Jacinto, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for San Jacinto, a city in Riverside County, California.

Tonight

51°F

Partly Cloudy then Patchy Fog

Patchy fog after 1am. Partly cloudy, with a low around 51. North wind 0 to 5 mph.

7-day forecast for San Jacinto

When	Temp	Forecast	Wind	Precip
Tonight	51°F	Partly Cloudy then Patchy Fog	0 to 5 mph N	0%
Wednesday	73°F	Patchy Fog then Sunny	0 mph	0%
Wednesday Night	52°F	Mostly Clear	0 to 5 mph NE	0%
Thursday	79°F	Sunny	0 to 5 mph N	0%
Thursday Night	53°F	Mostly Clear	0 to 10 mph NE	0%
Friday	81°F	Sunny	0 to 5 mph NE	0%
Friday Night	54°F	Clear	5 to 20 mph NE	0%
Saturday	83°F	Sunny	0 to 5 mph NE	0%
Saturday Night	56°F	Mostly Clear	5 to 20 mph NE	0%
Sunday	83°F	Sunny	0 to 5 mph NE	0%
Sunday Night	58°F	Partly Cloudy	5 to 20 mph E	0%
Monday	81°F	Mostly Sunny	0 to 5 mph NW	0%
Monday Night	57°F	Partly Cloudy	0 to 5 mph NE	1%
Tuesday	80°F	Mostly Sunny	0 to 5 mph NW	2%

Forecast source: National Weather Service (api.weather.gov) for San Jacinto (33.799, -116.996). Updated through the day.

Growing snapshot for San Jacinto

Last spring frost

Jan 31

First fall frost

Dec 10

Growing season

315 days

Hardiness zone

More local growing data for San Jacinto: nearby ZIP 92582 weather · frost dates · planting calendar · California frost dates

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Climate data from the nearest NOAA station, San Jacinto, Ca (2.4 mi from San Jacinto). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.