Oakville, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oakville, a community in Napa County, California.
Overnight
53°F
Partly Cloudy
Partly cloudy, with a low around 53. Wind around 0 mph.
7-day forecast for Oakville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 89°F | Sunny | 0 to 3 mph S | 0% |
| Saturday Night | 53°F | Partly Cloudy | 2 mph WNW | 0% |
| Sunday | 83°F | Patchy Fog then Mostly Cloudy | 2 mph SSW | 0% |
| Sunday Night | 52°F | Mostly Cloudy then Patchy Fog | 2 mph W | 0% |
| Monday | 84°F | Areas Of Fog then Mostly Sunny | 0 to 5 mph WSW | 0% |
| Monday Night | 51°F | Partly Cloudy then Patchy Fog | 0 to 5 mph W | 0% |
| Tuesday | 86°F | Areas Of Fog then Mostly Sunny | 0 to 3 mph SW | 0% |
| Tuesday Night | 52°F | Mostly Clear | 0 to 3 mph WSW | 0% |
| Wednesday | 93°F | Patchy Fog then Sunny | 2 mph NNE | 0% |
| Wednesday Night | 58°F | Partly Cloudy | 2 mph NW | 0% |
| Thursday | 93°F | Sunny | 0 to 3 mph WSW | 0% |
| Thursday Night | 56°F | Partly Cloudy | 0 to 3 mph W | 0% |
| Friday | 87°F | Mostly Sunny | 0 to 5 mph WSW | 1% |
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 Sep 19, 2026.