Oakville, CA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oakville, a community in Napa County, California.
Today
97°F
Sunny
Sunny. High near 97, with temperatures falling to around 94 in the afternoon. South wind 1 to 5 mph.
7-day forecast for Oakville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 97°F | Sunny | 1 to 5 mph S | 0% |
| Tonight | 55°F | Partly Cloudy | 0 to 5 mph SSW | 0% |
| Wednesday | 95°F | Mostly Sunny | 1 to 5 mph SW | 0% |
| Wednesday Night | 54°F | Mostly Clear | 1 to 5 mph WSW | 0% |
| Thursday | 94°F | Mostly Sunny | 1 to 5 mph WSW | 0% |
| Thursday Night | 55°F | Mostly Clear | 0 to 5 mph W | 0% |
| Friday | 98°F | Sunny | 0 to 3 mph WSW | 0% |
| Friday Night | 57°F | Mostly Clear | 0 to 3 mph WSW | 0% |
| Saturday | 98°F | Sunny | 0 to 5 mph SW | 0% |
| Saturday Night | 59°F | Mostly Clear | 0 to 5 mph W | 0% |
| Sunday | 94°F | Sunny | 0 to 6 mph SW | 0% |
| Sunday Night | 56°F | Mostly Clear then Areas Of Fog | 0 to 6 mph SW | 0% |
| Monday | 87°F | Patchy Fog then Sunny | 0 to 7 mph SSW | 0% |
| Monday Night | 53°F | Mostly Clear | 0 to 7 mph SW | 0% |
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 Aug 4, 2026.