La Mesa, CA Weather & Growing Conditions
This Afternoon
76°F
Sunny
Sunny, with a high near 76. West wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Sunny | 10 mph W | 1% |
| Tonight | 62°F | Partly Cloudy | 0 to 10 mph N | 1% |
| Saturday | 79°F | Sunny | 0 to 10 mph NW | 0% |
| Saturday Night | 63°F | Partly Cloudy | 0 to 5 mph SE | 0% |
| Sunday | 77°F | Partly Sunny | 0 to 10 mph SE | 0% |
| Sunday Night | 64°F | Mostly Cloudy | 0 to 5 mph SW | 2% |
| Monday | 76°F | Mostly Sunny | 0 to 10 mph SW | 2% |
| Monday Night | 63°F | Partly Cloudy | 0 to 10 mph N | 1% |
| Tuesday | 77°F | Sunny | 5 to 10 mph NW | 0% |
| Tuesday Night | 64°F | Mostly Clear | 0 to 10 mph NW | 0% |
| Wednesday | 82°F | Sunny | 0 to 10 mph NW | 1% |
| Wednesday Night | 66°F | Mostly Clear | 0 to 5 mph W | 2% |
| Thursday | 84°F | Sunny | 0 to 10 mph NW | 2% |
| Thursday Night | 68°F | Partly Cloudy | 0 to 5 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for La Mesa, CA
Last spring frost
Jan 6
First fall frost
Dec 21
Growing season
350 days
Hardiness zone
10b
Explore more for La Mesa, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, El Cajon, Ca (5.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.