Rio Vista, CA Weather & Growing Conditions
Today
92°F
Sunny
Sunny. High near 92, with temperatures falling to around 90 in the afternoon. West wind around 18 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 92°F | Sunny | 18 mph W | 0% |
| Tonight | 60°F | Clear then Patchy Smoke | 20 mph WSW | 0% |
| Wednesday | 90°F | Sunny | 15 to 18 mph W | 0% |
| Wednesday Night | 60°F | Clear | 20 mph WSW | 0% |
| Thursday | 91°F | Sunny | 14 to 18 mph WSW | 0% |
| Thursday Night | 61°F | Clear | 18 mph WSW | 0% |
| Friday | 93°F | Sunny | 13 to 17 mph WSW | 0% |
| Friday Night | 63°F | Mostly Clear | 15 to 18 mph WSW | 0% |
| Saturday | 96°F | Sunny | 12 to 16 mph WSW | 0% |
| Saturday Night | 64°F | Mostly Clear | 16 mph WSW | 0% |
| Sunday | 92°F | Sunny | 14 to 17 mph WSW | 0% |
| Sunday Night | 61°F | Mostly Clear | 17 mph WSW | 0% |
| Monday | 84°F | Sunny | 15 to 18 mph WSW | 0% |
| Monday Night | 59°F | Mostly Clear | 15 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 (10.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.