Rio Vista, CA Weather & Growing Conditions
Tonight
58°F
Clear
Clear, with a low around 58. West southwest wind around 15 mph, with gusts as high as 23 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Clear | 15 mph WSW | 0% |
| Saturday | 87°F | Sunny | 8 to 14 mph WSW | 0% |
| Saturday Night | 58°F | Mostly Cloudy | 15 mph WSW | 0% |
| Sunday | 79°F | Partly Sunny | 14 mph WSW | 0% |
| Sunday Night | 58°F | Mostly Cloudy | 13 to 18 mph WSW | 0% |
| Monday | 82°F | Sunny | 15 to 18 mph WSW | 0% |
| Monday Night | 57°F | Mostly Clear | 16 mph WSW | 0% |
| Tuesday | 85°F | Sunny | 10 to 14 mph WSW | 0% |
| Tuesday Night | 59°F | Mostly Clear | 6 to 14 mph WSW | 0% |
| Wednesday | 94°F | Sunny | 6 mph W | 0% |
| Wednesday Night | 63°F | Mostly Clear | 8 mph WSW | 0% |
| Thursday | 94°F | Sunny | 6 to 10 mph W | 0% |
| Thursday Night | 63°F | Mostly Clear | 10 to 14 mph WSW | 0% |
| Friday | 88°F | Sunny | 15 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 Sep 19, 2026.