San Jacinto, CA Weather & Growing Conditions
Today
87°F
Sunny
Sunny, with a high near 87. Southwest wind 5 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Sunny | 5 to 10 mph SW | 0% |
| Tonight | 58°F | Mostly Clear then Patchy Fog | 0 to 5 mph NW | 0% |
| Sunday | 85°F | Patchy Fog then Mostly Sunny | 0 to 10 mph W | 0% |
| Sunday Night | 59°F | Patchy Fog | 0 to 5 mph SW | 1% |
| Monday | 79°F | Patchy Fog then Mostly Sunny | 0 to 10 mph SW | 1% |
| Monday Night | 56°F | Partly Cloudy | 0 to 10 mph W | 0% |
| Tuesday | 84°F | Sunny | 0 to 5 mph NW | 0% |
| Tuesday Night | 60°F | Clear | 0 to 5 mph NW | 0% |
| Wednesday | 91°F | Sunny | 0 to 5 mph N | 2% |
| Wednesday Night | 63°F | Mostly Clear | 0 to 5 mph N | 1% |
| Thursday | 92°F | Sunny | 0 to 10 mph SE | 5% |
| Thursday Night | 64°F | Mostly Clear | 0 to 10 mph N | 5% |
| Friday | 90°F | Sunny | 0 to 5 mph W | 5% |
| Friday Night | 64°F | Mostly Clear | 0 to 5 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for San Jacinto, CA
Last spring frost
Jan 31
First fall frost
Dec 10
Growing season
315 days
Hardiness zone
9b
Explore more for San Jacinto, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, San Jacinto, Ca (2.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.