Yes

you do need a jacket based on the weather in Kassel, Germany 1 second ago

Why? Because it's really really huffing out there!
68°F20°C & Mostly Clear

Wind is 14 mph22 km/h from the Southwest, gusting to 32 mph51 km/h
September 15
11am68°F20°C13 mph22 km/h SouthwestMostly Clear
12pm66°F19°C12 mph19 km/h SouthwestMostly Clear
1pm64°F18°C10 mph17 km/h SouthwestMostly Clear
2pm62°F17°C10 mph16 km/h SouthwestMostly Clear
3pm60°F16°C10 mph16 km/h SouthwestPartly Cloudy
4pm59°F15°C10 mph16 km/h SouthwestMostly Clear
5pm58°F14°C11 mph18 km/h SouthwestMostly Clear
6pm57°F14°C12 mph20 km/h SouthwestPartly Cloudy
7pm56°F13°C13 mph20 km/h SouthwestPartly Cloudy
8pm56°F13°C13 mph20 km/h SouthwestPartly Cloudy
9pm55°F13°C14 mph22 km/h SouthwestPartly Cloudy
10pm55°F13°C13 mph21 km/h SouthwestPartly Cloudy
DateLowHighWindDayNight
September 1457°F14°C69°F20°C12 mph20 km/h from SouthwestRainPartly Cloudy
September 1553°F12°C63°F17°C14 mph23 km/h from SouthwestDrizzleDrizzle
September 1650°F10°C61°F16°C9 mph15 km/h from SouthwestCloudyMostly Cloudy
September 1758°F14°C72°F22°C9 mph14 km/h from SouthwestPartly CloudyMostly Clear
September 1857°F14°C76°F24°C7 mph11 km/h from SouthwestMostly ClearMostly Clear
September 1955°F13°C80°F27°C7 mph11 km/h from SouthPartly CloudyPartly Cloudy
September 2060°F15°C78°F26°C6 mph10 km/h from SouthwestPartly CloudyDrizzle

Yes

Low of 54°F12°C, High of 63°F17°C
Wind: 14 mph23 km/h
Precipitation: 47% rain

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