San Jacinto, CA Weather & Growing Conditions
This Afternoon
69°F
Mostly Sunny
Mostly sunny, with a high near 69. Southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Mostly Sunny | 5 mph SW | 0% |
| Tonight | 51°F | Partly Cloudy | 0 to 5 mph W | 0% |
| Wednesday | 69°F | Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 53°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Thursday | 74°F | Sunny | 0 to 5 mph N | 0% |
| Thursday Night | 54°F | Mostly Clear | 5 to 10 mph NE | 0% |
| Friday | 76°F | Sunny | 5 mph NE | 0% |
| Friday Night | 56°F | Clear | 5 to 20 mph NE | 0% |
| Saturday | 78°F | Sunny | 5 to 10 mph NE | 0% |
| Saturday Night | 58°F | Mostly Clear | 5 to 20 mph NE | 0% |
| Sunday | 78°F | Sunny | 5 to 10 mph E | 0% |
| Sunday Night | 59°F | Partly Cloudy | 5 to 20 mph E | 0% |
| Monday | 77°F | Mostly Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 58°F | Partly Cloudy | 0 mph | 1% |
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 Nov 4, 2026.