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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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
Nearby towns & communities
American Canyon
Angwin
Deer Park
Moskowite Corner
Napa
Oakville
Rutherford
Silverado Resort
St. Helena
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.