No
you don't need a jacket based on the weather in Napa, CA, USA 1 second ago
67°F19°C & Cloudy
Wind is 3 mph5 km/h from the Southwest, gusting to 6 mph9 km/h
| September 10 | ||||
| 1pm | 68°F20°C | 4 mph6 km/h Southwest | Partly Cloudy | |
| 2pm | 70°F21°C | 5 mph9 km/h Southwest | Partly Cloudy | |
| 3pm | 73°F23°C | 7 mph11 km/h Southwest | Partly Cloudy | |
| 4pm | 74°F24°C | 8 mph13 km/h Southwest | Mostly Clear | |
| 5pm | 75°F24°C | 10 mph15 km/h Southwest | Mostly Clear | |
| 6pm | 75°F24°C | 10 mph16 km/h Southwest | Partly Cloudy | |
| 7pm | 75°F24°C | 10 mph16 km/h Southwest | Partly Cloudy | |
| 8pm | 74°F24°C | 9 mph14 km/h Southwest | Partly Cloudy | |
| 9pm | 73°F23°C | 8 mph13 km/h Southwest | Partly Cloudy | |
| 10pm | 70°F21°C | 7 mph12 km/h Southwest | Partly Cloudy | |
| 11pm | 67°F19°C | 5 mph9 km/h Southwest | Partly Cloudy | |
| September 11 | ||||
| 12am | 64°F18°C | 5 mph7 km/h Southwest | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 10 | 60°F16°C | 75°F24°C | 7 mph11 km/h from Southwest | Partly Cloudy | Mostly Cloudy |
| September 11 | 58°F15°C | 77°F25°C | 5 mph8 km/h from Southwest | Partly Cloudy | Mostly Clear |
| September 12 | 57°F14°C | 83°F28°C | 6 mph10 km/h from Southwest | Mostly Clear | Mostly Clear |
| September 13 | 57°F14°C | 81°F27°C | 6 mph10 km/h from Southwest | Mostly Clear | Partly Cloudy |
| September 14 | 55°F13°C | 81°F27°C | 8 mph13 km/h from West | Mostly Clear | Mostly Clear |
| September 15 | 57°F14°C | 88°F31°C | 5 mph8 km/h from Southwest | Clear | Clear |
| September 16 | 57°F14°C | 93°F34°C | 4 mph6 km/h from Southwest | Clear | Clear |
Yes
Low of 58°F15°C, High of 77°F25°CWind: 5 mph8 km/h
Precipitation: 8% rain