Vacaville, CA Weather & Growing Conditions
Tonight
48°F
Chance Light Rain then Partly Cloudy
A chance of rain before 10pm. Partly cloudy. Low around 48, with temperatures rising to around 50 overnight. North wind 7 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 48°F | Chance Light Rain then Partly Cloudy | 7 to 15 mph N | 27% |
| Wednesday | 68°F | Sunny | 3 to 14 mph NW | 0% |
| Wednesday Night | 48°F | Partly Cloudy | 3 mph W | 0% |
| Thursday | 71°F | Sunny | 1 to 7 mph NNW | 0% |
| Thursday Night | 48°F | Mostly Clear | 3 mph WNW | 0% |
| Friday | 71°F | Sunny | 2 mph NNE | 0% |
| Friday Night | 48°F | Clear | 1 mph NE | 0% |
| Saturday | 72°F | Sunny | 0 to 5 mph NE | 0% |
| Saturday Night | 49°F | Mostly Clear | 1 mph WNW | 0% |
| Sunday | 72°F | Mostly Sunny | 2 mph NNW | 0% |
| Sunday Night | 50°F | Partly Cloudy | 1 mph W | 0% |
| Monday | 71°F | Partly Sunny | 2 mph WSW | 1% |
| Monday Night | 50°F | Partly Cloudy | 2 mph W | 2% |
| Tuesday | 71°F | Mostly Sunny | 3 mph WNW | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Vacaville, CA
Last spring frost
Feb 18
First fall frost
Nov 28
Growing season
283 days
Hardiness zone
9b
Explore more for Vacaville, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Vacaville Nut Tree Ap, Ca (3.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.