Yes

you do need a jacket based on the weather in Frederiksberg, Denmark 1 second ago

Why? Because it's pretty chilly and it's so windy, your hat will probably launch into orbit!
58°F15°C & Windy

Wind is 16 mph26 km/h from the South, gusting to 29 mph46 km/h
September 15
2am58°F15°C17 mph27 km/h SouthWindy
3am59°F15°C18 mph29 km/h SouthDrizzle
4am59°F15°C20 mph32 km/h SouthDrizzle
5am60°F16°C19 mph30 km/h SouthDrizzle
6am62°F17°C17 mph27 km/h SouthDrizzle
7am64°F18°C17 mph28 km/h SouthwestDrizzle
8am64°F18°C16 mph26 km/h SouthwestDrizzle
9am64°F18°C16 mph26 km/h SouthwestRain
10am64°F18°C16 mph26 km/h SouthwestDrizzle
11am63°F17°C18 mph28 km/h SouthwestDrizzle
12pm62°F17°C17 mph27 km/h SouthwestDrizzle
1pm61°F16°C16 mph27 km/h SouthwestDrizzle
DateLowHighWindDayNight
September 1453°F12°C64°F18°C17 mph28 km/h from SouthRainDrizzle
September 1556°F13°C63°F17°C19 mph31 km/h from SouthwestRainWindy
September 1655°F13°C65°F18°C15 mph25 km/h from WestDrizzleDrizzle
September 1757°F14°C66°F19°C16 mph25 km/h from WestDrizzleMostly Cloudy
September 1858°F14°C67°F19°C13 mph21 km/h from WestDrizzleMostly Cloudy
September 1960°F15°C72°F22°C9 mph14 km/h from SouthwestDrizzleMostly Cloudy
September 2055°F13°C66°F19°C8 mph13 km/h from NorthDrizzlePartly Cloudy

Yes

Low of 56°F14°C, High of 63°F17°C
Wind: 19 mph31 km/h
Precipitation: 85% rain

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