Yes

you do need a jacket based on the weather in Kirkwood, MO 63122, USA 1 second ago

Why? Because just cool enough for a jacket, but not warm enough to ditch it!
57°F14°C & Cloudy

Wind is 7 mph11 km/h from the West, gusting to 16 mph26 km/h
October 31
11pm55°F13°C6 mph9 km/h WestMostly Cloudy
November 1
12am52°F11°C5 mph9 km/h WestMostly Cloudy
1am50°F10°C6 mph9 km/h WestMostly Cloudy
2am49°F10°C6 mph9 km/h WestMostly Cloudy
3am48°F9°C6 mph9 km/h WestMostly Cloudy
4am47°F9°C6 mph10 km/h WestMostly Cloudy
5am46°F8°C6 mph9 km/h NorthwestMostly Cloudy
6am46°F8°C6 mph9 km/h NorthwestCloudy
7am45°F7°C5 mph9 km/h NorthwestCloudy
8am44°F7°C5 mph8 km/h WestCloudy
9am43°F6°C4 mph7 km/h WestMostly Cloudy
10am42°F6°C4 mph6 km/h WestMostly Cloudy
DateLowHighWindDayNight
October 3139°F4°C63°F17°C5 mph8 km/h from WestMostly ClearMostly Cloudy
November 139°F4°C51°F11°C6 mph9 km/h from WestMostly CloudyMostly Clear
November 235°F2°C53°F12°C3 mph5 km/h from SouthwestMostly ClearMostly Clear
November 339°F4°C63°F17°C7 mph11 km/h from WestClearPartly Cloudy
November 442°F6°C66°F19°C7 mph12 km/h from SouthMostly ClearMostly Clear
November 551°F10°C68°F20°C9 mph14 km/h from WestClearMostly Clear
November 649°F10°C66°F19°C8 mph13 km/h from SoutheastPartly CloudyMostly Cloudy

Yes

Low of 39°F4°C, High of 51°F11°C
Wind: 6 mph9 km/h
Precipitation: None

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