Yes
you do need a jacket based on the weather in Vacaville, CA, USA 1 second ago
Why? Because it's not very warm out.
56°F13°C & Cloudy
Wind is 9 mph14 km/h from the W, gusting to 16 mph26 km/h
| May 7 | ||||
| 2am | 55°F13°C | 8 mph12 km/h W | Mostly Cloudy | |
| 3am | 53°F12°C | 6 mph10 km/h SW | Mostly Cloudy | |
| 4am | 51°F11°C | 6 mph9 km/h SW | Partly Cloudy | |
| 5am | 50°F10°C | 5 mph8 km/h W | Partly Cloudy | |
| 6am | 49°F9°C | 4 mph7 km/h W | Mostly Clear | |
| 7am | 47°F9°C | 4 mph7 km/h W | Mostly Clear | |
| 8am | 47°F8°C | 4 mph6 km/h W | Clear | |
| 9am | 47°F8°C | 5 mph8 km/h NW | Mostly Clear | |
| 10am | 50°F10°C | 5 mph8 km/h NW | Mostly Clear | |
| 11am | 54°F12°C | 6 mph10 km/h N | Mostly Clear | |
| 12pm | 57°F14°C | 9 mph14 km/h N | Mostly Clear | |
| 1pm | 61°F16°C | 10 mph16 km/h N | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| May 6 | 42°F5°C | 70°F21°C | 5 mph8 km/h from SW | Mostly Clear | Partly Cloudy |
| May 7 | 47°F8°C | 75°F24°C | 9 mph14 km/h from N | Clear | Clear |
| May 8 | 57°F14°C | 79°F26°C | 17 mph27 km/h from N | Windy | Clear |
| May 9 | 62°F17°C | 85°F29°C | 10 mph15 km/h from N | Clear | Clear |
| May 10 | 57°F14°C | 91°F33°C | 4 mph7 km/h from N | Clear | Clear |
| May 11 | 59°F15°C | 92°F33°C | 5 mph8 km/h from SW | Clear | Clear |
| May 12 | 57°F14°C | 87°F30°C | 8 mph13 km/h from SW | Clear | Mostly Clear |
Yes
Low of 46°F8°C, High of 75°F24°CWind: 9 mph14 km/h
Precipitation: None