Harman US

Vallejo, CA Weather & Growing Conditions

Overnight
58°F
Mostly Clear
Mostly clear, with a low around 58. Southwest wind around 8 mph.

7-day forecast

WhenTempForecastWindPrecip
Overnight 58°F Mostly Clear 8 mph SW 0%
Tuesday 80°F Sunny 7 to 12 mph SW 0%
Tuesday Night 58°F Patchy Smoke 10 mph SW 0%
Wednesday 79°F Mostly Sunny 8 to 12 mph SW 0%
Wednesday Night 57°F Mostly Clear 7 to 12 mph SW 0%
Thursday 81°F Mostly Sunny 7 to 10 mph WSW 0%
Thursday Night 58°F Mostly Clear 7 to 10 mph WSW 0%
Friday 83°F Sunny 6 to 10 mph WSW 0%
Friday Night 59°F Mostly Clear 7 to 10 mph SW 0%
Saturday 80°F Sunny 6 to 10 mph SW 0%
Saturday Night 60°F Mostly Clear 10 mph SW 0%
Sunday 77°F Sunny 8 to 13 mph SW 0%
Sunday Night 58°F Mostly Clear 14 mph SW 0%
Monday 71°F 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 (3.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.