Rio Vista, CA Weather & Growing Conditions
Overnight
64°F
Clear
Clear, with a low around 64. West wind around 20 mph, with gusts as high as 28 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Clear | 20 mph W | 0% |
| Tuesday | 93°F | Sunny | 15 to 18 mph W | 0% |
| Tuesday Night | 62°F | Clear then Patchy Smoke | 17 to 21 mph WSW | 0% |
| Wednesday | 91°F | Sunny | 15 to 18 mph W | 0% |
| Wednesday Night | 61°F | Clear | 17 to 21 mph WSW | 0% |
| Thursday | 92°F | Sunny | 13 to 18 mph WSW | 0% |
| Thursday Night | 62°F | Clear | 18 mph WSW | 0% |
| Friday | 95°F | Sunny | 12 to 17 mph W | 0% |
| Friday Night | 64°F | Clear | 18 mph WSW | 0% |
| Saturday | 97°F | Sunny | 10 to 16 mph WSW | 0% |
| Saturday Night | 65°F | Mostly Clear | 16 mph WSW | 0% |
| Sunday | 93°F | Sunny | 13 to 17 mph WSW | 0% |
| Sunday Night | 62°F | Mostly Clear | 17 mph WSW | 0% |
| Monday | 86°F | Sunny | 14 to 18 mph WSW | 0% |
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 (11.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.