August morning could be foggy in the Napa Valley and Sonoma

August mornings can be foggy in the Napa Valley and Sonoma

August weather in Wine Country

August can be hot in Livermore, Lodi, Paso Robles, and the Sierra Foothills.  Morning fog may be present in Napa, Sonoma, and Mendocino. Night temperatures are always wonderful in the wine country in August.

Use this weather widget to get a forecast for the days you plan on visiting the wine country.  Click on the weather widget to enter your wine country destination.


More on When to Visit Wine Country