San Jacinto, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for San Jacinto, a city in Riverside County, California.
This Afternoon
86°F
Sunny
Sunny, with a high near 86. West wind 5 to 10 mph.
7-day forecast for San Jacinto
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 86°F | Sunny | 5 to 10 mph W | 1% |
| Tonight | 57°F | Mostly Clear | 0 to 10 mph S | 1% |
| Saturday | 90°F | Sunny | 0 to 10 mph SW | 0% |
| Saturday Night | 60°F | Mostly Clear | 0 to 10 mph S | 0% |
| Sunday | 88°F | Mostly Sunny | 0 to 10 mph S | 0% |
| Sunday Night | 60°F | Mostly Cloudy | 0 to 10 mph SW | 1% |
| Monday | 83°F | Sunny | 0 to 10 mph SW | 0% |
| Monday Night | 57°F | Mostly Clear | 0 to 10 mph SW | 0% |
| Tuesday | 88°F | Sunny | 0 to 10 mph NW | 1% |
| Tuesday Night | 62°F | Clear | 0 to 10 mph N | 0% |
| Wednesday | 97°F | Sunny | 0 to 10 mph N | 3% |
| Wednesday Night | 65°F | Mostly Clear | 0 to 10 mph NE | 2% |
| Thursday | 97°F | Sunny | 0 to 5 mph S | 7% |
| Thursday Night | 67°F | Mostly Clear | 0 to 5 mph N | 3% |
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
9b
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 Sep 19, 2026.