San Fernando, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for San Fernando, a city in Los Angeles County, California.
Tonight
54°F
Clear
Clear, with a low around 54. North wind 0 to 5 mph.
7-day forecast for San Fernando
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Clear | 0 to 5 mph N | 0% |
| Wednesday | 75°F | Sunny | 5 mph NNE | 0% |
| Wednesday Night | 56°F | Partly Cloudy | 5 to 10 mph NNE | 0% |
| Thursday | 79°F | Mostly Sunny | 5 to 10 mph NNE | 0% |
| Thursday Night | 59°F | Mostly Clear | 5 to 15 mph NNE | 0% |
| Friday | 82°F | Sunny | 10 to 15 mph NNE | 0% |
| Friday Night | 60°F | Clear | 10 to 15 mph NNE | 0% |
| Saturday | 83°F | Sunny | 5 to 10 mph NNE | 0% |
| Saturday Night | 60°F | Clear | 5 to 15 mph NNE | 0% |
| Sunday | 84°F | Sunny | 5 to 10 mph NNE | 0% |
| Sunday Night | 62°F | Mostly Clear | 5 to 15 mph NNE | 0% |
| Monday | 83°F | Sunny | 0 to 10 mph WNW | 0% |
| Monday Night | 61°F | Partly Cloudy | 5 mph N | 1% |
| Tuesday | 81°F | Sunny | 0 to 5 mph SSE | 1% |
Forecast source: National Weather Service (api.weather.gov) for San Fernando (34.289, -118.436). Updated through the day.
Growing snapshot for San Fernando
Last spring frost
Jan 2
First fall frost
Jan 1
Growing season
365 days
Hardiness zone
10a
More local growing data for San Fernando: nearby ZIP 91340 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Acton
Agoura Hills
Agua Dulce
Alhambra
Alondra Park
Altadena
Arcadia
Artesia
Avalon
Avocado Heights
Azusa
Baldwin Park
Bell
Bell Canyon
Bell Gardens
Bellflower
Beverly Hills
Bradbury
Burbank
Calabasas
Carson
Castaic
Cerritos
Charter Oak
Citrus
Claremont
Commerce
Compton
Covina
Cudahy
Climate data from the nearest NOAA station, Northridge Cal State, Ca (5.9 mi from San Fernando). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.