San Jacinto, CA Weather & Growing Conditions
Tonight
50°F
Partly Cloudy then Areas Of Fog
Areas of fog after 1am. Partly cloudy, with a low around 50. Northeast wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Partly Cloudy then Areas Of Fog | 0 to 5 mph NE | 0% |
| Wednesday | 73°F | Patchy Fog then Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 52°F | Mostly Clear | 0 to 5 mph E | 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 NE | 0% |
| Monday | 82°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). 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 Nov 4, 2026.