Yes

you do need a jacket based on the weather in Henley, MO 65040, USA 1 second ago

Why? Because it's cool. Pleasantly cool, but cool.
51°F11°C & Clear

Wind is 2 mph3 km/h from the N, gusting to 5 mph8 km/h
April 24
10am55°F13°C3 mph4 km/h NEPartly Cloudy
11am60°F16°C4 mph6 km/h NEPartly Cloudy
12pm63°F17°C4 mph7 km/h NEMostly Cloudy
1pm66°F19°C5 mph8 km/h NEPartly Cloudy
2pm68°F20°C6 mph9 km/h NEPartly Cloudy
3pm69°F21°C5 mph9 km/h NEPartly Cloudy
4pm70°F21°C5 mph7 km/h NEPartly Cloudy
5pm71°F22°C4 mph6 km/h NEMostly Clear
6pm71°F21°C4 mph6 km/h NEMostly Clear
7pm69°F21°C4 mph6 km/h EMostly Clear
8pm67°F19°C4 mph6 km/h EMostly Clear
9pm62°F17°C4 mph7 km/h EMostly Clear
DateLowHighWindDayNight
April 2444°F7°C71°F22°C4 mph6 km/h from NEPartly CloudyMostly Clear
April 2549°F9°C69°F20°C9 mph15 km/h from SERainRain
April 2656°F13°C73°F23°C15 mph24 km/h from SRainRain
April 2764°F18°C82°F28°C15 mph24 km/h from SPartly CloudyRain
April 2865°F18°C74°F23°C15 mph24 km/h from SThunderstormsThunderstorms
April 2958°F14°C73°F23°C6 mph9 km/h from WMostly CloudyMostly Clear
April 3051°F11°C77°F25°C4 mph6 km/h from SEClearClear

Yes

Low of 48°F9°C, High of 69°F21°C
Wind: 9 mph15 km/h
Precipitation: 47% rain

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