Vallejo, CA Weather & Growing Conditions
Overnight
57°F
Partly Cloudy
Partly cloudy, with a low around 57. West southwest wind around 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Partly Cloudy | 9 mph WSW | 0% |
| Tuesday | 80°F | Sunny | 12 mph WSW | 0% |
| Tuesday Night | 56°F | Patchy Smoke | 12 mph WSW | 0% |
| Wednesday | 80°F | Mostly Sunny | 12 mph WSW | 0% |
| Wednesday Night | 56°F | Partly Cloudy | 12 mph WSW | 0% |
| Thursday | 81°F | Mostly Sunny | 12 mph WSW | 0% |
| Thursday Night | 57°F | Mostly Clear | 8 to 12 mph WSW | 0% |
| Friday | 83°F | Sunny | 7 to 12 mph WSW | 0% |
| Friday Night | 58°F | Mostly Clear | 8 to 12 mph WSW | 0% |
| Saturday | 85°F | Mostly Sunny | 7 to 12 mph WSW | 0% |
| Saturday Night | 59°F | Mostly Clear | 8 to 12 mph SW | 0% |
| Sunday | 81°F | Sunny | 8 to 13 mph SW | 0% |
| Sunday Night | 57°F | Partly Cloudy | 13 mph SW | 0% |
| Monday | 75°F | Mostly Sunny | 14 mph SW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Vallejo, CA
Last spring frost
Jan 17
First fall frost
Dec 27
Growing season
346 days
Hardiness zone
9b
Explore more for Vallejo, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Vallejo, Ca (2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.