Yes

you do need a jacket based on the weather in Kraków, Poland 39 seconds ago

Why? Because it's pretty chilly!
55°F13°C & Cloudy

Wind is 7 mph11 km/h from the Southwest, gusting to 14 mph23 km/h
October 24
12am55°F13°C8 mph12 km/h SouthwestCloudy
1am54°F12°C12 mph19 km/h WestCloudy
2am52°F11°C12 mph20 km/h WestDrizzle
3am50°F10°C13 mph21 km/h WestRain
4am49°F10°C11 mph18 km/h WestRain
5am48°F9°C10 mph16 km/h WestRain
6am48°F9°C8 mph13 km/h WestRain
7am48°F9°C8 mph14 km/h WestRain
8am48°F9°C10 mph16 km/h WestRain
9am49°F9°C13 mph21 km/h WestRain
10am49°F10°C16 mph26 km/h WestRain
11am50°F10°C15 mph24 km/h WestRain
DateLowHighWindDayNight
October 2343°F6°C57°F14°C13 mph20 km/h from WestRainDrizzle
October 2440°F4°C51°F11°C11 mph17 km/h from SouthwestMostly CloudyMostly Cloudy
October 2542°F5°C53°F12°C11 mph18 km/h from SouthwestMostly CloudyMostly Cloudy
October 2640°F5°C47°F9°C13 mph21 km/h from SouthwestMostly CloudyCloudy
October 2741°F5°C47°F8°C16 mph25 km/h from WestDrizzleMostly Cloudy
October 2839°F4°C49°F9°C12 mph19 km/h from WestRainMostly Cloudy
October 2938°F4°C52°F11°C5 mph9 km/h from WestMostly ClearMostly Clear

Yes

Low of 40°F5°C, High of 52°F11°C
Wind: 11 mph17 km/h
Precipitation: None

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