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Yountville, CA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Yountville, a city in Napa County, California.

Today
87°F
Areas Of Fog then Sunny
Areas of fog before 9am. Sunny. High near 87, with temperatures falling to around 85 in the afternoon. South wind 0 to 5 mph.

7-day forecast for Yountville

WhenTempForecastWindPrecip
Today 87°F Areas Of Fog then Sunny 0 to 5 mph S 0%
Tonight 52°F Mostly Cloudy then Areas Of Fog 2 mph S 0%
Sunday 80°F Areas Of Fog then Mostly Cloudy 0 to 3 mph SSW 0%
Sunday Night 52°F Mostly Cloudy then Patchy Fog 1 mph SW 1%
Monday 82°F Patchy Fog then Mostly Sunny 1 to 5 mph SW 0%
Monday Night 51°F Partly Cloudy then Patchy Fog 3 mph SW 0%
Tuesday 84°F Patchy Fog then Mostly Sunny 3 mph SW 0%
Tuesday Night 52°F Mostly Clear then Patchy Fog 2 mph WNW 0%
Wednesday 91°F Patchy Fog then Mostly Sunny 1 mph S 0%
Wednesday Night 57°F Partly Cloudy 1 mph NW 0%
Thursday 92°F Mostly Sunny 0 to 3 mph WSW 0%
Thursday Night 56°F Partly Cloudy 0 to 3 mph W 0%
Friday 86°F Mostly Sunny 1 to 5 mph WSW 1%
Friday Night 53°F Partly Cloudy 0 to 3 mph WSW 1%

Forecast source: National Weather Service (api.weather.gov) for Yountville (38.394, -122.366). Updated through the day.

Growing snapshot for Yountville

Last spring frost
Mar 2
First fall frost
Nov 27
Growing season
270 days
Hardiness zone
9b

More local growing data for Yountville: nearby ZIP 94599 weather · frost dates · planting calendar · California frost dates

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Climate data from the nearest NOAA station, Sonoma, Ca (8.2 mi from Yountville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.