Green Valley, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Green Valley, a community in Los Angeles County, California.
Tonight
52°F
Clear
Clear, with a low around 52. Northwest wind around 10 mph.
7-day forecast for Green Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Clear | 10 mph NW | 0% |
| Saturday | 83°F | Sunny | 5 to 15 mph N | 0% |
| Saturday Night | 56°F | Partly Cloudy | 5 mph WSW | 0% |
| Sunday | 79°F | Partly Sunny | 5 to 15 mph SW | 0% |
| Sunday Night | 55°F | Partly Cloudy | 10 mph SW | 1% |
| Monday | 72°F | Sunny | 10 to 15 mph SW | 1% |
| Monday Night | 52°F | Mostly Clear | 5 to 15 mph SW | 1% |
| Tuesday | 79°F | Sunny | 5 to 10 mph WSW | 0% |
| Tuesday Night | 57°F | Clear | 5 to 10 mph W | 0% |
| Wednesday | 84°F | Sunny | 10 to 15 mph NE | 0% |
| Wednesday Night | 60°F | Clear | 5 to 10 mph WSW | 0% |
| Thursday | 84°F | Sunny | 10 to 15 mph ENE | 1% |
| Thursday Night | 60°F | Mostly Clear | 5 to 15 mph SW | 2% |
| Friday | 82°F | Sunny | 5 to 15 mph SW | 3% |
Forecast source: National Weather Service (api.weather.gov) for Green Valley (34.617, -118.405). Updated through the day.
Growing snapshot for Green Valley
Last spring frost
Apr 6
First fall frost
Nov 29
Growing season
236 days
Hardiness zone
9b
More local growing data for Green Valley: nearby ZIP 91390 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, Fairmont, Ca (9.6 mi from Green Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.