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.
This Afternoon
63°F
Mostly Sunny
Mostly sunny, with a high near 63. West southwest wind 15 to 20 mph, with gusts as high as 30 mph.
7-day forecast for Green Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 63°F | Mostly Sunny | 15 to 20 mph WSW | 0% |
| Tonight | 45°F | Mostly Clear | 15 mph WNW | 0% |
| Wednesday | 62°F | Sunny | 10 to 15 mph N | 0% |
| Wednesday Night | 44°F | Partly Cloudy | 10 to 15 mph N | 0% |
| Thursday | 64°F | Mostly Sunny | 10 to 15 mph NNE | 0% |
| Thursday Night | 47°F | Mostly Clear | 10 to 15 mph NNE | 0% |
| Friday | 67°F | Sunny | 15 to 20 mph NE | 0% |
| Friday Night | 51°F | Clear | 15 to 25 mph NE | 0% |
| Saturday | 69°F | Sunny | 15 to 25 mph NE | 0% |
| Saturday Night | 51°F | Clear | 15 to 20 mph NE | 0% |
| Sunday | 69°F | Sunny | 10 to 15 mph NE | 0% |
| Sunday Night | 52°F | Partly Cloudy | 10 to 15 mph NNE | 0% |
| Monday | 69°F | Mostly Sunny | 5 to 10 mph WNW | 0% |
| Monday Night | 51°F | Partly Cloudy | 5 mph WNW | 0% |
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
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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 Nov 4, 2026.