Yountville, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Yountville, a city in Napa County, California.
Tonight
44°F
Partly Cloudy
Partly cloudy, with a low around 44. North northwest wind around 6 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Yountville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 44°F | Partly Cloudy | 6 mph NNW | 3% |
| Wednesday | 67°F | Sunny | 1 to 7 mph NW | 2% |
| Wednesday Night | 44°F | Mostly Cloudy | 5 mph NW | 2% |
| Thursday | 72°F | Mostly Sunny | 0 to 5 mph N | 0% |
| Thursday Night | 43°F | Mostly Clear | 2 mph N | 0% |
| Friday | 74°F | Sunny | 0 to 3 mph N | 0% |
| Friday Night | 44°F | Mostly Clear | 2 mph NNE | 0% |
| Saturday | 75°F | Sunny | 0 to 3 mph NNE | 0% |
| Saturday Night | 44°F | Mostly Clear | 2 mph NNW | 0% |
| Sunday | 75°F | Mostly Sunny | 0 to 3 mph N | 0% |
| Sunday Night | 46°F | Partly Cloudy | 2 mph NNW | 0% |
| Monday | 72°F | Partly Sunny | 2 mph NW | 2% |
| Monday Night | 45°F | Partly Cloudy | 2 mph NNW | 2% |
| Tuesday | 72°F | Sunny | 2 mph NNW | 7% |
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 Nov 4, 2026.