Yountville, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Yountville, a city in Napa County, California.
Today
57°F
Light Rain
Rain before 3pm, then rain and patchy fog between 3pm and 4pm, then areas of fog and a chance of rain. Cloudy. High near 57, with temperatures falling to around 55 in the afternoon. Southeast wind 1 to 7 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Yountville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 57°F | Light Rain | 1 to 7 mph SE | 95% |
| Tonight | 44°F | Chance Light Rain then Mostly Cloudy | 1 to 6 mph NNE | 47% |
| Wednesday | 67°F | Sunny | 1 to 6 mph NW | 1% |
| Wednesday Night | 43°F | Partly Cloudy | 1 to 5 mph NW | 0% |
| Thursday | 72°F | Sunny | 0 to 5 mph N | 0% |
| Thursday Night | 44°F | Mostly Clear | 2 mph NNW | 0% |
| Friday | 74°F | Sunny | 2 mph N | 0% |
| Friday Night | 46°F | Mostly Clear | 1 mph NNE | 0% |
| Saturday | 74°F | Sunny | 0 to 3 mph NE | 0% |
| Saturday Night | 46°F | Mostly Clear | 2 mph NNW | 0% |
| Sunday | 73°F | Mostly Sunny | 0 to 3 mph N | 0% |
| Sunday Night | 47°F | Mostly Cloudy | 1 mph NNW | 0% |
| Monday | 71°F | Partly Sunny | 2 mph W | 1% |
| Monday Night | 47°F | Mostly Cloudy | 1 mph NW | 2% |
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 3, 2026.