Rio Vista, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Rio Vista, a city in Solano County, California.
Tonight
48°F
Mostly Clear
Mostly clear. Low around 48, with temperatures rising to around 50 overnight. North northwest wind 10 to 14 mph, with gusts as high as 25 mph.
7-day forecast for Rio Vista
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Mostly Clear | 10 to 14 mph NNW | 0% |
| Wednesday | 69°F | Sunny | 5 to 14 mph NNW | 1% |
| Wednesday Night | 48°F | Mostly Cloudy | 5 mph W | 2% |
| Thursday | 72°F | Mostly Sunny | 3 to 9 mph NW | 0% |
| Thursday Night | 48°F | Mostly Clear | 1 to 5 mph WNW | 0% |
| Friday | 71°F | Sunny | 0 to 5 mph N | 0% |
| Friday Night | 48°F | Mostly Clear | 0 mph | 0% |
| Saturday | 72°F | Sunny | 0 to 5 mph NNE | 0% |
| Saturday Night | 49°F | Mostly Clear | 0 to 3 mph WNW | 0% |
| Sunday | 72°F | Sunny | 0 to 5 mph NNW | 0% |
| Sunday Night | 50°F | Partly Cloudy | 1 mph NW | 0% |
| Monday | 71°F | Mostly Sunny | 1 to 5 mph W | 0% |
| Monday Night | 49°F | Partly Cloudy | 2 mph W | 1% |
| Tuesday | 72°F | Sunny | 1 to 5 mph NW | 5% |
Forecast source: National Weather Service (api.weather.gov) for Rio Vista (38.177, -121.703). Updated through the day.
Growing snapshot for Rio Vista
Last spring frost
Jan 12
First fall frost
Dec 19
Growing season
343 days
Hardiness zone
9b
More local growing data for Rio Vista: nearby ZIP 94571 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Antioch Pumping Plt #3, Ca (11.7 mi from Rio Vista). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.