La Mesa, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for La Mesa, a city in San Diego County, California.
This Afternoon
76°F
Sunny
Sunny, with a high near 76. West wind 5 to 10 mph.
7-day forecast for La Mesa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Sunny | 5 to 10 mph W | 1% |
| Tonight | 62°F | Partly Cloudy | 0 to 10 mph N | 1% |
| Saturday | 78°F | Sunny | 0 to 10 mph NW | 0% |
| Saturday Night | 62°F | Mostly Cloudy | 0 to 5 mph SW | 0% |
| Sunday | 76°F | Partly Sunny | 0 to 10 mph S | 0% |
| Sunday Night | 64°F | Mostly Cloudy | 0 to 5 mph SW | 2% |
| Monday | 75°F | Mostly Sunny | 0 to 10 mph SW | 2% |
| Monday Night | 63°F | Partly Cloudy | 0 to 10 mph N | 1% |
| Tuesday | 76°F | Sunny | 5 to 10 mph NW | 0% |
| Tuesday Night | 64°F | Mostly Clear | 0 to 10 mph NW | 0% |
| Wednesday | 81°F | Sunny | 0 to 10 mph NW | 1% |
| Wednesday Night | 66°F | Partly Cloudy | 0 to 5 mph W | 3% |
| Thursday | 83°F | Mostly 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) for La Mesa (32.769, -117.022). Updated through the day.
Growing snapshot for La Mesa
Last spring frost
Jan 6
First fall frost
Dec 21
Growing season
350 days
Hardiness zone
10b
More local growing data for La Mesa: nearby ZIP 91942 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Alpine
Bonita
Bonsall
Borrego Springs
Bostonia
Boulevard
Camp Pendleton Mainside
Camp Pendleton South
Campo
Carlsbad
Casa de Oro-Mount Helix
Chula Vista
Coronado
Crest
Del Dios
Del Mar
Descanso
El Cajon
Elfin Forest
Encinitas
Escondido
Eucalyptus Hills
Fairbanks Ranch
Fallbrook
Granite Hills
Harbison Canyon
Harmony Grove
Hidden Meadows
Imperial Beach
Jacumba
Climate data from the nearest NOAA station, El Cajon, Ca (5.6 mi from La Mesa). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.