San Jacinto, CA Weather & Growing Conditions
Overnight
56°F
Mostly Clear
Mostly clear, with a low around 56. Southwest wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Mostly Clear | 0 mph | 1% |
| Saturday | 91°F | Sunny | 0 to 10 mph W | 0% |
| Saturday Night | 58°F | Mostly Clear | 0 to 10 mph S | 0% |
| Sunday | 89°F | Mostly Sunny | 0 to 10 mph W | 0% |
| Sunday Night | 59°F | Partly Cloudy | 0 to 10 mph SW | 1% |
| Monday | 83°F | Mostly Sunny | 0 to 10 mph SW | 1% |
| Monday Night | 57°F | Partly Cloudy | 0 to 10 mph W | 0% |
| Tuesday | 88°F | Sunny | 0 to 5 mph W | 0% |
| Tuesday Night | 60°F | Clear | 0 to 5 mph N | 0% |
| Wednesday | 96°F | Sunny | 0 to 10 mph NW | 2% |
| Wednesday Night | 63°F | Clear | 0 to 10 mph NE | 1% |
| Thursday | 96°F | Sunny | 0 to 10 mph SW | 5% |
| Thursday Night | 63°F | Mostly Clear | 0 to 10 mph N | 5% |
| Friday | 95°F | Sunny | 0 to 5 mph W | 5% |
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 (2.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.