Yes

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

Why? Because just cool enough for a jacket, but not warm enough to ditch it and it's so windy, even the squirrels are holding onto branches for dear life!
55°F13°C & Partly Cloudy

Wind is 10 mph16 km/h from the Southwest, gusting to 21 mph34 km/h
October 26
1pm55°F13°C10 mph16 km/h SouthwestPartly Cloudy
2pm53°F12°C10 mph17 km/h SouthwestMostly Cloudy
3pm52°F11°C11 mph17 km/h SouthwestDrizzle
4pm51°F11°C11 mph18 km/h SouthwestMostly Cloudy
5pm50°F10°C10 mph16 km/h SouthwestMostly Clear
6pm48°F9°C9 mph15 km/h SouthwestMostly Cloudy
7pm46°F8°C11 mph17 km/h SouthwestMostly Cloudy
8pm46°F8°C14 mph22 km/h SouthwestDrizzle
9pm44°F7°C14 mph23 km/h SouthwestDrizzle
10pm44°F7°C15 mph24 km/h SouthwestRain
11pm45°F7°C16 mph25 km/h SouthwestWindy
October 27
12am46°F8°C16 mph26 km/h SouthwestWindy
DateLowHighWindDayNight
October 2544°F6°C55°F13°C10 mph15 km/h from SouthwestRainRain
October 2643°F6°C49°F10°C12 mph19 km/h from SouthwestDrizzleDrizzle
October 2744°F7°C51°F10°C13 mph20 km/h from WestDrizzleRain
October 2844°F7°C53°F11°C10 mph16 km/h from WestMostly CloudyCloudy
October 2944°F7°C57°F14°C8 mph13 km/h from SouthwestMostly CloudyPartly Cloudy
October 3041°F5°C54°F12°C4 mph6 km/h from SoutheastPartly CloudyPartly Cloudy
October 3140°F4°C54°F12°C7 mph11 km/h from SoutheastMostly CloudyCloudy

Yes

Low of 44°F7°C, High of 49°F10°C
Wind: 12 mph19 km/h
Precipitation: 37% rain

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