Yes

you do need a jacket based on the weather in Grudziądz, Poland 1 second ago

Why? Because it's cold enough that makes you wish you had a hat, but you're still too proud to admit it!
41°F5°C & Mostly Clear

Wind is 5 mph8 km/h from the South, gusting to 10 mph16 km/h
November 6
3am41°F5°C5 mph8 km/h SouthMostly Clear
4am40°F5°C5 mph8 km/h SouthMostly Clear
5am40°F4°C5 mph7 km/h SouthMostly Clear
6am39°F4°C4 mph7 km/h SouthMostly Cloudy
7am41°F5°C5 mph8 km/h SouthMostly Cloudy
8am43°F6°C5 mph8 km/h SouthPartly Cloudy
9am47°F8°C6 mph10 km/h SouthMostly Cloudy
10am49°F10°C6 mph10 km/h SouthMostly Cloudy
11am52°F11°C6 mph9 km/h SouthMostly Cloudy
12pm53°F12°C6 mph9 km/h SouthMostly Cloudy
1pm53°F12°C5 mph8 km/h SoutheastMostly Cloudy
2pm52°F11°C5 mph7 km/h SoutheastMostly Cloudy
DateLowHighWindDayNight
November 539°F4°C54°F12°C5 mph9 km/h from SoutheastMostly CloudyClear
November 641°F5°C55°F13°C7 mph12 km/h from SoutheastClearClear
November 739°F4°C54°F12°C4 mph6 km/h from SoutheastClearPartly Cloudy
November 838°F3°C47°F8°C2 mph4 km/h from SouthwestMostly CloudyMostly Cloudy
November 941°F5°C48°F9°C3 mph5 km/h from WestMostly CloudyMostly Cloudy
November 1040°F5°C48°F9°C3 mph5 km/h from SouthCloudyCloudy
November 1139°F4°C47°F9°C5 mph8 km/h from SouthwestMostly CloudyPartly Cloudy

Yes

Low of 41°F5°C, High of 55°F13°C
Wind: 7 mph12 km/h
Precipitation: None

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