No
you don't need a jacket based on the weather in McHenry, IL, USA 1 second ago
62°F16°C & Partly Cloudy
Wind is 9 mph14 km/h from the South, gusting to 18 mph29 km/h
| September 9 | ||||
| 11am | 64°F18°C | 9 mph15 km/h South | Cloudy | |
| 12pm | 68°F20°C | 9 mph15 km/h South | Cloudy | |
| 1pm | 70°F21°C | 9 mph15 km/h South | Cloudy | |
| 2pm | 72°F22°C | 8 mph13 km/h South | Cloudy | |
| 3pm | 73°F23°C | 8 mph12 km/h South | Cloudy | |
| 4pm | 73°F23°C | 8 mph13 km/h South | Cloudy | |
| 5pm | 73°F23°C | 8 mph13 km/h South | Cloudy | |
| 6pm | 72°F22°C | 8 mph13 km/h South | Cloudy | |
| 7pm | 71°F21°C | 6 mph9 km/h South | Mostly Cloudy | |
| 8pm | 67°F19°C | 5 mph8 km/h South | Mostly Cloudy | |
| 9pm | 63°F17°C | 5 mph8 km/h South | Mostly Cloudy | |
| 10pm | 61°F16°C | 5 mph8 km/h South | Partly Cloudy | |
| Date | Low | High | Wind | Day | Night |
|---|---|---|---|---|---|
| September 9 | 49°F10°C | 73°F23°C | 7 mph12 km/h from South | Mostly Cloudy | Partly Cloudy |
| September 10 | 52°F11°C | 76°F25°C | 4 mph6 km/h from South | Partly Cloudy | Partly Cloudy |
| September 11 | 57°F14°C | 79°F26°C | 6 mph9 km/h from East | Mostly Clear | Clear |
| September 12 | 57°F14°C | 82°F28°C | 6 mph10 km/h from South | Mostly Clear | Partly Cloudy |
| September 13 | 64°F18°C | 83°F28°C | 9 mph14 km/h from South | Mostly Cloudy | Partly Cloudy |
| September 14 | 65°F18°C | 83°F28°C | 7 mph11 km/h from East | Partly Cloudy | Partly Cloudy |
| September 15 | 63°F17°C | 78°F26°C | 9 mph14 km/h from East | Mostly Cloudy | Mostly Cloudy |
Yes
Low of 52°F11°C, High of 76°F25°CWind: 4 mph6 km/h
Precipitation: None