Oakville, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oakville, a community in Napa County, California.
This Afternoon
59°F
Light Rain
Rain before 4pm, then a chance of rain and patchy fog. Mostly cloudy. High near 59, with temperatures falling to around 56 in the afternoon. Southeast wind around 3 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Oakville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 59°F | Light Rain | 3 mph SE | 87% |
| Tonight | 43°F | Chance Light Rain then Mostly Cloudy | 3 mph N | 47% |
| Wednesday | 69°F | Sunny | 5 mph NW | 1% |
| Wednesday Night | 42°F | Partly Cloudy then Patchy Fog | 3 mph NW | 0% |
| Thursday | 74°F | Patchy Fog then Sunny | 0 to 3 mph NNW | 0% |
| Thursday Night | 44°F | Mostly Clear | 2 mph NNW | 0% |
| Friday | 76°F | Sunny | 2 mph N | 0% |
| Friday Night | 45°F | Mostly Clear | 1 mph NNE | 0% |
| Saturday | 76°F | Sunny | 2 mph NE | 0% |
| Saturday Night | 45°F | Mostly Clear | 2 mph NNW | 0% |
| Sunday | 76°F | Mostly Sunny | 2 mph N | 0% |
| Sunday Night | 46°F | Mostly Cloudy | 1 mph NNW | 0% |
| Monday | 73°F | Patchy Fog then Partly Sunny | 1 mph W | 2% |
| Monday Night | 45°F | Mostly Cloudy | 1 mph NW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Oakville (38.438, -122.407). Updated through the day.
Growing snapshot for Oakville
Last spring frost
Feb 3
First fall frost
Dec 4
Growing season
306 days
Hardiness zone
9b
More local growing data for Oakville: nearby ZIP 94562 weather · frost dates · planting calendar · California frost dates
Nearby towns & communities
American Canyon
Angwin
Deer Park
Moskowite Corner
Napa
Rutherford
Silverado Resort
St. Helena
Yountville
Climate data from the nearest NOAA station, Saint Helena, Ca (6.3 mi from Oakville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.