No

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

66°F19°C & Mostly Clear

Wind is 6 mph9 km/h from the West, gusting to 13 mph21 km/h
August 23
6am66°F19°C6 mph10 km/h WestMostly Clear
7am65°F18°C7 mph12 km/h WestMostly Clear
8am65°F19°C8 mph13 km/h WestMostly Clear
9am67°F20°C10 mph17 km/h WestMostly Clear
10am68°F20°C13 mph20 km/h NorthwestMostly Clear
11am69°F21°C14 mph22 km/h NorthwestClear
12pm70°F21°C14 mph23 km/h NorthwestClear
1pm71°F21°C14 mph23 km/h NorthwestMostly Clear
2pm72°F22°C15 mph24 km/h NorthwestMostly Clear
3pm72°F22°C15 mph25 km/h NorthwestWindy
4pm72°F22°C15 mph24 km/h NorthwestMostly Clear
5pm71°F22°C14 mph23 km/h NorthwestMostly Clear
DateLowHighWindDayNight
August 2359°F15°C72°F22°C13 mph21 km/h from NorthwestMostly ClearMostly Clear
August 2455°F13°C69°F20°C13 mph21 km/h from NorthwestMostly ClearMostly Clear
August 2551°F11°C67°F19°C10 mph17 km/h from NorthwestMostly ClearMostly Clear
August 2647°F8°C69°F21°C8 mph12 km/h from NorthwestMostly ClearMostly Clear
August 2750°F10°C72°F22°C8 mph13 km/h from WestPartly CloudyPartly Cloudy
August 2856°F13°C73°F23°C8 mph12 km/h from WestPartly CloudyPartly Cloudy
August 2955°F13°C70°F21°C7 mph12 km/h from NortheastPartly CloudyMostly Clear

Yes

Low of 55°F13°C, High of 69°F21°C
Wind: 13 mph21 km/h
Precipitation: 9% rain

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