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Winemaking Calculators
Wine Business Monthly Sep 1, 2025 Issue
WINEBUSINESS MONTHLY

The Industry's Leading Publication for Wineries and Growers

Wine Business Monthly Sep 1, 2025 Issue
WINEBUSINESS MONTHLY

The Industry's Leading Publication for Wineries and Growers

Winemaking Calculators

Current Conditions


Napa, Napa County Airport, CA  
Last Update on Sep 18 2025, 1:54 am PDT
66.0 F (18.9 C)
Fair
Fair
Temp:
66.0 F (18.9 C)
Humidity:
84 %
Dew Pt:
61.0 F (16.1 C)
Pressure:
29.8"
Visibility:
10.00 miles
Wind:
South at  3.5 mph

Regional Forecast


Thursday
Mostly Cloudy
84°F / 59°F
Friday
Slight Chance Rain Showers
84°F / 57°F
Saturday
Mostly Sunny
84°F / 57°F
Sunday
Sunny
84°F / 59°F
Monday
Mostly Sunny
84°F / 60°F
Tuesday
Chance Rain Showers
84°F / 59°F

Growing Degree Days


Oakville (elev: 190 ft) Degree Days
Compare two years of data:

Daily Average ETo


Oakville (elev: 190 ft)
7 day ETo (daily avg.)
Select Eto date range:

Regional Forecast


Thursday
Mostly Cloudy
84°F / 59°F
Friday
Slight Chance Rain Showers
84°F / 57°F
Saturday
Mostly Sunny
84°F / 57°F
Sunday
Sunny
84°F / 59°F
Monday
Mostly Sunny
84°F / 60°F
Tuesday
Chance Rain Showers
84°F / 59°F

Seasonal Rainfall


Napa/Oakville (July 1 - Jun 30)