No
you don't need a jacket based on the weather in McHenry, IL, USA 1 second ago
70°F21°C & Cloudy
Wind is 5 mph8 km/h from the East, gusting to 10 mph16 km/h
| September 10 | ||||
| 9pm | 67°F20°C | 5 mph7 km/h East | Mostly Clear | |
| 10pm | 65°F18°C | 4 mph7 km/h Northeast | Mostly Clear | |
| 11pm | 63°F17°C | 4 mph7 km/h Northeast | Mostly Clear | |
| September 11 | ||||
| 12am | 61°F16°C | 4 mph6 km/h Northeast | Mostly Clear | |
| 1am | 61°F16°C | 4 mph6 km/h Northeast | Mostly Clear | |
| 2am | 60°F15°C | 4 mph7 km/h Northeast | Mostly Clear | |
| 3am | 59°F15°C | 4 mph6 km/h Northeast | Partly Cloudy | |
| 4am | 59°F15°C | 4 mph6 km/h Northeast | Partly Cloudy | |
| 5am | 58°F14°C | 4 mph6 km/h Northeast | Partly Cloudy | |
| 6am | 58°F14°C | 4 mph7 km/h Northeast | Partly Cloudy | |
| 7am | 58°F14°C | 4 mph7 km/h Northeast | Mostly Clear | |
| 8am | 58°F15°C | 4 mph7 km/h Northeast | Mostly Clear | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 10 | 54°F12°C | 80°F26°C | 2 mph3 km/h from East | Mostly Clear | Mostly Clear |
| September 11 | 58°F14°C | 79°F26°C | 7 mph11 km/h from East | Mostly Clear | Mostly Clear |
| September 12 | 57°F14°C | 83°F28°C | 6 mph9 km/h from South | Mostly Clear | Mostly Cloudy |
| September 13 | 64°F18°C | 86°F30°C | 10 mph15 km/h from Southwest | Mostly Cloudy | Mostly Clear |
| September 14 | 65°F18°C | 87°F30°C | 6 mph10 km/h from East | Mostly Clear | Mostly Clear |
| September 15 | 66°F19°C | 82°F28°C | 7 mph12 km/h from Southeast | Partly Cloudy | Partly Cloudy |
| September 16 | 63°F17°C | 84°F29°C | 5 mph9 km/h from South | Partly Cloudy | Partly Cloudy |
Yes
Low of 57°F14°C, High of 79°F26°CWind: 7 mph11 km/h
Precipitation: None