Rio Vista, CA Weather & Growing Conditions
Overnight
49°F
Mostly Clear
Mostly clear, with a low around 49. North wind around 14 mph, with gusts as high as 24 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 49°F | Mostly Clear | 14 mph N | 0% |
| Wednesday | 68°F | Sunny | 7 to 13 mph NW | 1% |
| Wednesday Night | 49°F | Mostly Cloudy | 7 mph WSW | 2% |
| Thursday | 71°F | Mostly Sunny | 5 to 8 mph NW | 0% |
| Thursday Night | 48°F | Mostly Clear | 5 mph WNW | 0% |
| Friday | 70°F | Sunny | 1 to 6 mph N | 0% |
| Friday Night | 49°F | Mostly Clear | 2 mph N | 0% |
| Saturday | 71°F | Sunny | 1 to 7 mph NE | 0% |
| Saturday Night | 49°F | Mostly Clear | 0 to 3 mph NNW | 0% |
| Sunday | 71°F | Sunny | 1 to 6 mph NW | 0% |
| Sunday Night | 50°F | Partly Cloudy | 0 to 3 mph W | 0% |
| Monday | 70°F | Mostly Sunny | 6 mph W | 0% |
| Monday Night | 50°F | Partly Cloudy | 3 mph WSW | 1% |
| Tuesday | 71°F | Sunny | 5 mph WNW | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Rio Vista, CA
Last spring frost
Jan 12
First fall frost
Dec 19
Growing season
343 days
Hardiness zone
9b
Explore more for Rio Vista, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Antioch Pumping Plt #3, Ca (10.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.