Yountville, CA Weather & Growing Conditions
Today
87°F
Sunny
Sunny. High near 87, with temperatures falling to around 85 in the afternoon. South southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Sunny | 5 mph SSW | 0% |
| Tonight | 53°F | Mostly Cloudy then Areas Of Fog | 2 mph S | 0% |
| Sunday | 79°F | Areas Of Fog then Mostly Cloudy | 0 to 3 mph SSE | 0% |
| Sunday Night | 52°F | Mostly Cloudy then Patchy Fog | 1 mph SSW | 0% |
| Monday | 80°F | Patchy Fog then Mostly Sunny | 1 to 5 mph SW | 0% |
| Monday Night | 51°F | Patchy Fog | 3 mph SW | 0% |
| Tuesday | 81°F | Patchy Fog then Mostly Sunny | 3 mph SW | 0% |
| Tuesday Night | 52°F | Mostly Clear then Areas Of Fog | 2 mph WSW | 0% |
| Wednesday | 90°F | Areas Of Fog then Mostly Sunny | 2 mph N | 0% |
| Wednesday Night | 58°F | Partly Cloudy | 1 mph NNW | 0% |
| Thursday | 92°F | Mostly Sunny | 3 mph SW | 0% |
| Thursday Night | 57°F | Partly Cloudy | 1 mph WSW | 0% |
| Friday | 86°F | Mostly Sunny | 1 to 5 mph WSW | 0% |
| Friday Night | 54°F | Partly Cloudy | 2 mph WSW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Yountville, CA
Last spring frost
Mar 2
First fall frost
Nov 27
Growing season
270 days
Hardiness zone
9b
Explore more for Yountville, CA: full frost dates · planting calendar · California frost dates
Climate data from the nearest NOAA station, Sonoma, Ca (8.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.