Yountville, CA Weather & Growing Conditions
Overnight
55°F
Mostly Cloudy
Mostly cloudy, with a low around 55. South wind around 1 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Mostly Cloudy | 1 mph S | 0% |
| Tuesday | 96°F | Haze then Mostly Sunny | 1 to 5 mph S | 0% |
| Tuesday Night | 54°F | Partly Cloudy | 3 mph S | 0% |
| Wednesday | 93°F | Patchy Fog then Mostly Sunny | 5 mph SSW | 0% |
| Wednesday Night | 53°F | Partly Cloudy then Patchy Fog | 2 mph WSW | 0% |
| Thursday | 92°F | Patchy Fog then Mostly Sunny | 3 mph WSW | 0% |
| Thursday Night | 55°F | Partly Cloudy | 2 mph WSW | 0% |
| Friday | 96°F | Mostly Sunny | 3 mph SW | 0% |
| Friday Night | 56°F | Partly Cloudy | 0 to 3 mph WSW | 0% |
| Saturday | 95°F | Sunny | 0 to 3 mph SW | 0% |
| Saturday Night | 58°F | Mostly Clear | 0 to 3 mph SSW | 0% |
| Sunday | 92°F | Mostly Sunny | 0 to 5 mph SSW | 0% |
| Sunday Night | 54°F | Partly Cloudy then Patchy Fog | 1 to 5 mph SW | 0% |
| Monday | 85°F | Patchy Fog then Mostly Sunny | 1 to 6 mph SSW | 0% |
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 Aug 4, 2026.