No
you don't need a jacket based on the weather in DeKalb, IL, USA 1 second ago
62°F17°C & Clear
Wind is 5 mph8 km/h from the East, gusting to 12 mph19 km/h
| September 11 | ||||
| 1am | 61°F16°C | 5 mph8 km/h East | Clear | |
| 2am | 60°F15°C | 5 mph8 km/h East | Clear | |
| 3am | 59°F15°C | 5 mph8 km/h East | Clear | |
| 4am | 58°F14°C | 3 mph6 km/h Northeast | Clear | |
| 5am | 57°F14°C | 5 mph7 km/h Northeast | Clear | |
| 6am | 56°F14°C | 5 mph8 km/h Northeast | Mostly Clear | |
| 7am | 57°F14°C | 5 mph8 km/h Northeast | Mostly Clear | |
| 8am | 58°F14°C | 5 mph8 km/h Northeast | Mostly Clear | |
| 9am | 62°F17°C | 5 mph9 km/h Northeast | Mostly Clear | |
| 10am | 67°F19°C | 6 mph10 km/h East | Mostly Clear | |
| 11am | 71°F22°C | 6 mph10 km/h East | Clear | |
| 12pm | 75°F24°C | 6 mph10 km/h East | Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 10 | 53°F12°C | 80°F27°C | 1 mph2 km/h from Southwest | Mostly Clear | Mostly Clear |
| September 11 | 56°F14°C | 80°F27°C | 5 mph9 km/h from East | Mostly Clear | Mostly Clear |
| September 12 | 57°F14°C | 83°F29°C | 7 mph11 km/h from South | Mostly Clear | Mostly Cloudy |
| September 13 | 63°F17°C | 88°F31°C | 10 mph15 km/h from South | Mostly Cloudy | Mostly Clear |
| September 14 | 66°F19°C | 90°F32°C | 3 mph5 km/h from East | Mostly Clear | Partly Cloudy |
| September 15 | 67°F20°C | 83°F28°C | 8 mph13 km/h from Southeast | Mostly Cloudy | Partly Cloudy |
| September 16 | 66°F19°C | 84°F29°C | 6 mph9 km/h from Southeast | Partly Cloudy | Partly Cloudy |
Yes
Low of 56°F14°C, High of 81°F27°CWind: 5 mph9 km/h
Precipitation: None