Climate and Weather of Napa Valley, the United States of America
In the United States of America you have several regions, one of which is called Napa Valley. The most popular city in this region is Napa, whose climate data we'll examine to provide you with an overview of what weather to expect in Napa Valley. For detailed climate information about other cities in the area, please refer to the section beneath the map further down the page.
In Napa Valley, during the months of April and May you can expect comfortable weather, with average temperatures ranging from 20°C to 25°C.
The hottest season / summer is in June, July, August and September.
The coldest month is January with an average maximum temperature of 14°C.
However, the specific temperature can vary depending on the exact location within the region.
Additional climate insights:
- The months of January, February, March and December have a high chance of precipitation.
- Napa Valley has dry periods in May, June, July, August and September.
- December is the wettest month in Napa Valley. This month should be avoided if you are not a big fan of rain.
- July is the driest month.
- The warmest month in Napa Valley is September with an average maximum temperature of 29°C.
- The coldest month is January with an average maximum daytime temperature of 14°C.
- May is the sunniest month in Napa Valley.
Interested in the detailed Weather and Climate of Napa Valley, the United States of America?
Please select a city below the map you wish to travel to, or the one closest to your destination. Each selected city will show you the following graphs:
1. Average minimum and maximum temperature over the year
2. Average monthly precipitation over the year (rainfall, snow)
3. Average monthly hours of sunshine over the year
On certain pages we also offer other historical climate data like humidity wind speed and water temperature.