Typical September weather
Napa
California · September
80° days
51° nights
rain is rare · 12½ hours of daylight
What to pack
- Light jacket
- Sunscreen
- Layers
What September feels like
September is harvest in earnest — trucks of fruit on the highway before dawn and air around the wineries you can genuinely smell. It is the busiest and priciest month of the year here, so reserve tastings well ahead or expect to be walking.
Rain is genuinely rare — most years, September stays dry start to finish. about 5 afternoons top 90°.
The numbers
| Typical high | 80° |
|---|---|
| Typical low | 51° |
| Days with real rain | 0 |
| Total rain | 0.1 in |
| Sunrise / sunset (mid-month) | 6:51 am / 7:17 pm |