Yes
you do need a jacket based on the weather in Decatur, IL, USA 1 second ago
Why? Because it's cool. Pleasantly cool, but cool!
55°F13°C & Clear
Wind is 6 mph9 km/h from the Northwest, gusting to 9 mph15 km/h
| November 3 | ||||
| 11pm | 53°F12°C | 5 mph9 km/h Northwest | Clear | |
| November 4 | ||||
| 12am | 49°F9°C | 5 mph9 km/h Northwest | Clear | |
| 1am | 45°F7°C | 5 mph8 km/h Northwest | Clear | |
| 2am | 43°F6°C | 4 mph6 km/h West | Clear | |
| 3am | 41°F5°C | 4 mph7 km/h West | Clear | |
| 4am | 39°F4°C | 4 mph6 km/h West | Mostly Cloudy | |
| 5am | 39°F4°C | 3 mph5 km/h West | Mostly Cloudy | |
| 6am | 38°F4°C | 3 mph4 km/h Southwest | Mostly Cloudy | |
| 7am | 37°F3°C | 3 mph4 km/h Southwest | Mostly Cloudy | |
| 8am | 37°F3°C | 2 mph4 km/h South | Mostly Cloudy | |
| 9am | 37°F3°C | 2 mph4 km/h Southeast | Mostly Cloudy | |
| 10am | 36°F2°C | 3 mph5 km/h Southeast | Mostly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| November 3 | 37°F3°C | 62°F17°C | 9 mph14 km/h from Northwest | Clear | Mostly Cloudy |
| November 4 | 36°F2°C | 66°F19°C | 13 mph21 km/h from South | Mostly Clear | Mostly Clear |
| November 5 | 42°F5°C | 64°F18°C | 13 mph21 km/h from Northwest | Mostly Clear | Clear |
| November 6 | 36°F2°C | 60°F16°C | 12 mph19 km/h from Southeast | Partly Cloudy | Rain |
| November 7 | 45°F7°C | 63°F17°C | 14 mph22 km/h from West | Drizzle | Partly Cloudy |
| November 8 | 40°F4°C | 56°F13°C | 6 mph10 km/h from Southwest | Mostly Cloudy | Mostly Cloudy |
| November 9 | 31°F-1°C | 47°F8°C | 18 mph29 km/h from Northwest | Windy | Partly Cloudy |
Yes
Low of 36°F2°C, High of 66°F19°CWind: 13 mph21 km/h
Precipitation: None