Yes
you do need a jacket based on the weather in Napa County Airport, 2000 Airport Rd, Napa, CA 94558, USA 1 second ago
Why? Because it's not very warm out!
57°F14°C & Mostly Clear
Wind is 2 mph4 km/h from the South, gusting to 4 mph6 km/h
| September 17 | ||||
| 11am | 59°F15°C | 3 mph4 km/h South | Clear | |
| 12pm | 63°F17°C | 2 mph4 km/h Southwest | Clear | |
| 1pm | 68°F20°C | 3 mph5 km/h Southwest | Clear | |
| 2pm | 74°F23°C | 4 mph6 km/h Southwest | Clear | |
| 3pm | 79°F26°C | 4 mph7 km/h Southwest | Clear | |
| 4pm | 84°F29°C | 5 mph7 km/h Southwest | Clear | |
| 5pm | 88°F31°C | 5 mph9 km/h Southwest | Clear | |
| 6pm | 91°F33°C | 7 mph11 km/h Southwest | Partly Cloudy | |
| 7pm | 92°F33°C | 9 mph14 km/h Southwest | Partly Cloudy | |
| 8pm | 91°F33°C | 9 mph14 km/h West | Mostly Clear | |
| 9pm | 88°F31°C | 8 mph13 km/h West | Mostly Clear | |
| 10pm | 82°F28°C | 6 mph10 km/h West | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 17 | 57°F14°C | 92°F33°C | 5 mph8 km/h from Southwest | Mostly Clear | Mostly Cloudy |
| September 18 | 62°F17°C | 76°F24°C | 6 mph10 km/h from Southwest | Cloudy | Cloudy |
| September 19 | 62°F17°C | 75°F24°C | 4 mph7 km/h from Southwest | Partly Cloudy | Partly Cloudy |
| September 20 | 59°F15°C | 81°F27°C | 5 mph9 km/h from Southwest | Mostly Clear | Mostly Clear |
| September 21 | 58°F15°C | 84°F29°C | 5 mph8 km/h from Southwest | Clear | Clear |
| September 22 | 59°F15°C | 92°F33°C | 4 mph6 km/h from Southwest | Mostly Clear | Partly Cloudy |
| September 23 | 62°F17°C | 79°F26°C | 5 mph8 km/h from Southwest | Rain | Partly Cloudy |
No
Low of 62°F17°C, High of 76°F25°CWind: 6 mph10 km/h
Precipitation: 7% rain