No

you don't need a jacket based on the weather in Channahon, IL, USA 1 second ago

69°F21°C & Clear

Wind is 4 mph7 km/h from the Northeast, gusting to 9 mph15 km/h
August 14
1am69°F20°C4 mph7 km/h EastClear
2am68°F20°C3 mph5 km/h NortheastClear
3am67°F19°C3 mph5 km/h NortheastClear
4am66°F19°C2 mph4 km/h NortheastClear
5am65°F18°C2 mph3 km/h NortheastClear
6am64°F18°C2 mph4 km/h NorthClear
7am64°F18°C3 mph5 km/h NorthMostly Clear
8am66°F19°C2 mph4 km/h NortheastMostly Clear
9am70°F21°C2 mph4 km/h NortheastMostly Clear
10am74°F23°C3 mph5 km/h NortheastClear
11am77°F25°C3 mph5 km/h NortheastClear
12pm79°F26°C3 mph5 km/h NortheastClear
DateLowHighWindDayNight
August 1369°F20°C85°F29°C3 mph4 km/h from NorthwestMostly ClearClear
August 1464°F18°C83°F29°C3 mph5 km/h from EastMostly ClearClear
August 1566°F19°C88°F31°C5 mph8 km/h from SouthMostly ClearMostly Clear
August 1672°F22°C91°F33°C7 mph10 km/h from SouthwestPartly CloudyPartly Cloudy
August 1773°F23°C91°F33°C4 mph7 km/h from SouthwestPartly CloudyPartly Cloudy
August 1873°F23°C91°F33°C6 mph10 km/h from SouthwestPartly CloudyPartly Cloudy
August 1974°F23°C87°F31°C7 mph12 km/h from NorthwestPartly CloudyDrizzle

No

Low of 64°F18°C, High of 83°F29°C
Wind: 3 mph5 km/h
Precipitation: None

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