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
58°F
Partly Cloudy
Partly cloudy. Low around 58, with temperatures rising to around 60 overnight. West southwest wind around 12 mph, with gusts as high as 20 mph.
7-day forecast for Rio Vista
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Partly Cloudy | 12 mph WSW | 0% |
| Sunday | 81°F | Partly Sunny | 10 mph WSW | 0% |
| Sunday Night | 57°F | Mostly Cloudy | 10 to 15 mph WSW | 0% |
| Monday | 82°F | Mostly Sunny | 13 to 16 mph WSW | 0% |
| Monday Night | 57°F | Mostly Clear | 14 mph WSW | 0% |
| Tuesday | 83°F | Sunny | 8 to 12 mph WSW | 0% |
| Tuesday Night | 57°F | Mostly Clear | 6 to 10 mph WSW | 0% |
| Wednesday | 92°F | Sunny | 6 mph W | 0% |
| Wednesday Night | 62°F | Mostly Clear | 5 mph W | 0% |
| Thursday | 95°F | Sunny | 2 to 6 mph W | 0% |
| Thursday Night | 63°F | Mostly Clear | 6 to 10 mph WSW | 0% |
| Friday | 88°F | Sunny | 13 mph WSW | 0% |
| Friday Night | 60°F | Mostly Clear | 14 mph WSW | 0% |
| Saturday | 82°F | Sunny | 10 to 14 mph WSW | 0% |
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 Sep 20, 2026.