Yes

you do need a jacket based on the weather in Manhattan, KS, USA 1 second ago

Why? Because the drizzle is not enough rain to call it "raining," but enough to make you a little soggy and it's not very warm out!
54°F12°C & Drizzle

Wind is 9 mph14 km/h from the East, gusting to 14 mph23 km/h
October 25
4pm54°F12°C9 mph14 km/h EastDrizzle
5pm55°F13°C9 mph15 km/h EastDrizzle
6pm56°F13°C10 mph16 km/h EastDrizzle
7pm56°F14°C10 mph16 km/h EastDrizzle
8pm57°F14°C10 mph16 km/h EastRain
9pm57°F14°C10 mph17 km/h EastCloudy
10pm57°F14°C10 mph16 km/h EastCloudy
11pm57°F14°C10 mph16 km/h EastDrizzle
October 26
12am56°F13°C10 mph16 km/h EastDrizzle
1am55°F13°C10 mph17 km/h EastDrizzle
2am55°F13°C11 mph17 km/h EastDrizzle
3am54°F12°C11 mph17 km/h EastCloudy
DateLowHighWindDayNight
October 2551°F11°C58°F14°C9 mph14 km/h from EastRainDrizzle
October 2651°F11°C58°F15°C9 mph15 km/h from EastDrizzleCloudy
October 2751°F10°C60°F15°C8 mph13 km/h from SoutheastCloudyDrizzle
October 2846°F8°C59°F15°C14 mph23 km/h from NorthwestDrizzleWindy
October 2942°F5°C53°F11°C19 mph31 km/h from NorthWindyPartly Cloudy
October 3037°F3°C55°F13°C6 mph10 km/h from SouthwestMostly ClearPartly Cloudy
October 3138°F3°C57°F14°C7 mph11 km/h from NorthwestPartly CloudyPartly Cloudy

Yes

Low of 51°F11°C, High of 58°F15°C
Wind: 9 mph15 km/h
Precipitation: 31% rain

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