Jamul, CA Weather & Growing Conditions
Overnight
69°F
Mostly Clear
Mostly clear, with a low around 69. East wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 69°F | Mostly Clear | 0 to 5 mph E | 0% |
| Tuesday | 83°F | Sunny | 0 to 10 mph W | 1% |
| Tuesday Night | 68°F | Mostly Clear | 0 to 10 mph NE | 1% |
| Wednesday | 82°F | Sunny | 0 to 10 mph SW | 4% |
| Wednesday Night | 70°F | Mostly Clear | 0 to 5 mph E | 2% |
| Thursday | 84°F | Sunny | 0 to 10 mph SW | 4% |
| Thursday Night | 72°F | Mostly Clear | 0 to 5 mph W | 2% |
| Friday | 85°F | Sunny | 0 to 10 mph W | 1% |
| Friday Night | 71°F | Mostly Clear | 0 to 10 mph NW | 0% |
| Saturday | 87°F | Sunny | 0 to 10 mph W | 2% |
| Saturday Night | 72°F | Mostly Clear | 0 to 10 mph N | 1% |
| Sunday | 86°F | Sunny | 0 to 10 mph SW | 6% |
| Sunday Night | 71°F | Mostly Clear | 0 to 10 mph NW | 5% |
| Monday | 83°F | Sunny | 0 to 10 mph SW | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Jamul, CA
Last spring frost
Feb 12
First fall frost
Dec 24
Growing season
317 days
Hardiness zone
10a
Explore more for Jamul, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Alpine, Ca (9.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.