No
you don't need a jacket based on the weather in Rockford, IL, USA 1 second ago
79°F26°C & Mostly Cloudy
Wind is 5 mph8 km/h from the East, gusting to 7 mph11 km/h
| September 11 | ||||
| 6pm | 79°F26°C | 5 mph8 km/h East | Mostly Clear | |
| 7pm | 77°F25°C | 6 mph9 km/h East | Mostly Clear | |
| 8pm | 73°F23°C | 7 mph10 km/h East | Clear | |
| 9pm | 70°F21°C | 9 mph14 km/h East | Clear | |
| 10pm | 67°F19°C | 9 mph14 km/h East | Clear | |
| 11pm | 64°F18°C | 8 mph13 km/h East | Clear | |
| September 12 | ||||
| 12am | 62°F17°C | 7 mph12 km/h East | Clear | |
| 1am | 60°F16°C | 6 mph10 km/h East | Mostly Clear | |
| 2am | 59°F15°C | 6 mph9 km/h East | Mostly Clear | |
| 3am | 58°F15°C | 6 mph9 km/h East | Mostly Clear | |
| 4am | 57°F14°C | 5 mph9 km/h East | Mostly Clear | |
| 5am | 57°F14°C | 5 mph8 km/h East | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 11 | 57°F14°C | 80°F27°C | 5 mph8 km/h from East | Mostly Clear | Mostly Clear |
| September 12 | 56°F13°C | 83°F29°C | 6 mph10 km/h from South | Partly Cloudy | Mostly Cloudy |
| September 13 | 65°F18°C | 85°F29°C | 8 mph13 km/h from South | Mostly Cloudy | Mostly Clear |
| September 14 | 64°F18°C | 87°F30°C | 5 mph8 km/h from Northeast | Mostly Clear | Clear |
| September 15 | 63°F17°C | 87°F30°C | 4 mph6 km/h from Northeast | Partly Cloudy | Mostly Clear |
| September 16 | 63°F17°C | 86°F30°C | 4 mph6 km/h from East | Mostly Clear | Partly Cloudy |
| September 17 | 64°F18°C | 84°F29°C | 5 mph9 km/h from Southeast | Partly Cloudy | Mostly Clear |
Yes
Low of 56°F14°C, High of 83°F29°CWind: 6 mph10 km/h
Precipitation: None