No
you don't need a jacket based on the weather in St. Charles, IL, USA 1 second ago
76°F25°C & Cloudy
Wind is 7 mph11 km/h from the East, gusting to 12 mph20 km/h
| September 16 | ||||
| 8pm | 74°F24°C | 7 mph11 km/h East | Clear | |
| 9pm | 71°F22°C | 6 mph9 km/h East | Clear | |
| 10pm | 68°F20°C | 5 mph7 km/h East | Clear | |
| 11pm | 66°F19°C | 3 mph5 km/h East | Clear | |
| September 17 | ||||
| 12am | 64°F18°C | 3 mph5 km/h East | Clear | |
| 1am | 63°F17°C | 3 mph4 km/h Northeast | Clear | |
| 2am | 62°F17°C | 3 mph5 km/h Northeast | Clear | |
| 3am | 61°F16°C | 2 mph4 km/h Northeast | Clear | |
| 4am | 60°F16°C | 3 mph4 km/h Northeast | Clear | |
| 5am | 59°F15°C | 3 mph4 km/h Northeast | Mostly Clear | |
| 6am | 59°F15°C | 3 mph5 km/h Northeast | Mostly Clear | |
| 7am | 59°F15°C | 3 mph5 km/h Northeast | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 16 | 59°F15°C | 84°F29°C | 3 mph5 km/h from East | Clear | Clear |
| September 17 | 58°F15°C | 84°F29°C | 3 mph5 km/h from Northeast | Mostly Clear | Clear |
| September 18 | 61°F16°C | 85°F29°C | 3 mph5 km/h from East | Mostly Clear | Partly Cloudy |
| September 19 | 62°F17°C | 80°F27°C | 9 mph14 km/h from East | Partly Cloudy | Partly Cloudy |
| September 20 | 63°F17°C | 81°F27°C | 7 mph12 km/h from Southeast | Partly Cloudy | Partly Cloudy |
| September 21 | 63°F17°C | 77°F25°C | 9 mph14 km/h from South | Rain | Rain |
| September 22 | 63°F17°C | 80°F27°C | 8 mph12 km/h from Southwest | Thunderstorms | Thunderstorms |
Yes
Low of 58°F15°C, High of 84°F29°CWind: 3 mph5 km/h
Precipitation: None