Jamul, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Jamul, a community in San Diego County, California.
This Afternoon
77°F
Sunny
Sunny, with a high near 77. West wind around 10 mph, with gusts as high as 20 mph.
7-day forecast for Jamul
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Sunny | 10 mph W | 2% |
| Tonight | 58°F | Partly Cloudy | 0 to 10 mph N | 2% |
| Saturday | 79°F | Sunny | 0 to 10 mph NW | 0% |
| Saturday Night | 59°F | Partly Cloudy | 0 to 5 mph NE | 0% |
| Sunday | 77°F | Mostly Sunny | 0 to 10 mph NW | 0% |
| Sunday Night | 60°F | Mostly Cloudy | 0 to 5 mph S | 1% |
| Monday | 76°F | Mostly Sunny | 0 to 10 mph SW | 1% |
| Monday Night | 58°F | Mostly Clear | 0 to 10 mph NW | 0% |
| Tuesday | 78°F | Sunny | 5 to 10 mph N | 0% |
| Tuesday Night | 59°F | Mostly Clear | 0 to 10 mph NW | 0% |
| Wednesday | 84°F | Sunny | 0 to 10 mph N | 3% |
| Wednesday Night | 63°F | Mostly Clear | 0 to 5 mph NW | 2% |
| Thursday | 85°F | Sunny | 0 to 10 mph NW | 3% |
| Thursday Night | 65°F | Mostly Clear | 0 to 5 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Jamul (32.718, -116.871). Updated through the day.
Growing snapshot for Jamul
Last spring frost
Jan 6
First fall frost
Dec 21
Growing season
350 days
Hardiness zone
10b
More local growing data for Jamul: nearby ZIP 92019 weather · frost dates · planting calendar · California frost dates
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Climate data from the nearest NOAA station, El Cajon, Ca (3.6 mi from Jamul). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.