No
you don't need a jacket based on the weather in Illinois, USA 1 second ago
61°F16°C & Clear
Wind is 4 mph7 km/h from the E, gusting to 9 mph14 km/h
| July 27 | ||||
| 4am | 61°F16°C | 5 mph8 km/h E | Clear | |
| 5am | 60°F16°C | 4 mph7 km/h E | Clear | |
| 6am | 60°F15°C | 4 mph7 km/h E | Clear | |
| 7am | 59°F15°C | 4 mph7 km/h E | Clear | |
| 8am | 62°F16°C | 5 mph7 km/h E | Clear | |
| 9am | 66°F19°C | 5 mph8 km/h SE | Clear | |
| 10am | 71°F22°C | 5 mph8 km/h SE | Clear | |
| 11am | 75°F24°C | 6 mph9 km/h SE | Clear | |
| 12pm | 78°F26°C | 6 mph9 km/h SE | Mostly Clear | |
| 1pm | 81°F27°C | 5 mph9 km/h SE | Mostly Cloudy | |
| 2pm | 82°F28°C | 5 mph9 km/h SE | Mostly Cloudy | |
| 3pm | 83°F28°C | 6 mph10 km/h SE | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| July 27 | 59°F15°C | 84°F29°C | 6 mph9 km/h from SE | Partly Cloudy | Rain |
| July 28 | 68°F20°C | 80°F27°C | 8 mph13 km/h from S | Rain | Partly Cloudy |
| July 29 | 68°F20°C | 83°F28°C | 9 mph14 km/h from SW | Rain | Rain |
| July 30 | 71°F22°C | 89°F32°C | 6 mph10 km/h from W | Partly Cloudy | Mostly Clear |
| July 31 | 72°F22°C | 88°F31°C | 6 mph10 km/h from S | Mostly Cloudy | Partly Cloudy |
| August 1 | 72°F22°C | 89°F32°C | 8 mph13 km/h from SW | Partly Cloudy | Mostly Clear |
| August 2 | 72°F22°C | 87°F30°C | 5 mph9 km/h from NW | Partly Cloudy | Rain |
No
Low of 68°F20°C, High of 80°F27°CWind: 8 mph13 km/h
Precipitation: 71% rain