Green Valley, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Green Valley, a community in Solano County, California.
Tonight
58°F
Partly Cloudy
Partly cloudy. Low around 58, with temperatures rising to around 60 overnight. West wind 8 to 12 mph.
7-day forecast for Green Valley
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Partly Cloudy | 8 to 12 mph W | 0% |
| Sunday | 76°F | Partly Sunny | 5 to 10 mph W | 0% |
| Sunday Night | 57°F | Mostly Cloudy | 13 mph WSW | 0% |
| Monday | 76°F | Sunny | 9 to 14 mph WSW | 0% |
| Monday Night | 56°F | Mostly Clear | 12 to 16 mph WSW | 0% |
| Tuesday | 78°F | Sunny | 6 to 12 mph WSW | 0% |
| Tuesday Night | 57°F | Mostly Clear | 1 to 12 mph WSW | 0% |
| Wednesday | 89°F | Sunny | 1 to 7 mph WSW | 0% |
| Wednesday Night | 63°F | Mostly Clear | 3 to 7 mph W | 0% |
| Thursday | 91°F | Sunny | 1 to 9 mph WSW | 0% |
| Thursday Night | 63°F | Mostly Clear | 9 mph WSW | 0% |
| Friday | 84°F | Sunny | 7 to 12 mph WSW | 0% |
| Friday Night | 60°F | Mostly Clear | 13 mph WSW | 0% |
| Saturday | 77°F | Sunny | 13 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Green Valley (38.264, -122.162). Updated through the day.
Growing snapshot for Green Valley
Last spring frost
Jan 15
First fall frost
Dec 14
Growing season
336 days
Hardiness zone
9b
More local growing data for Green Valley: nearby ZIP 94534 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Fairfield, Ca (3.5 mi from Green Valley). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.