Yes

you do need a jacket based on the weather in Glenwood, IA 51534, USA 1 second ago

Why? Because it's cool. Pleasantly cool, but cool.
53°F12°C & Thunderstorms

Wind is 21 mph34 km/h from the SE, gusting to 39 mph62 km/h
April 26
3am53°F12°C22 mph36 km/h SERain
4am52°F11°C21 mph33 km/h SERain
5am53°F12°C21 mph34 km/h SERain
6am53°F12°C22 mph36 km/h SERain
7am54°F12°C21 mph34 km/h SERain
8am54°F12°C22 mph35 km/h SEDrizzle
9am55°F13°C22 mph35 km/h SEWindy
10am56°F13°C22 mph36 km/h SEWindy
11am58°F14°C22 mph36 km/h SEWindy
12pm59°F15°C23 mph36 km/h SEWindy
1pm61°F16°C23 mph37 km/h SEWindy
2pm63°F17°C22 mph36 km/h SEWindy
DateLowHighWindDayNight
April 2652°F11°C74°F23°C22 mph36 km/h from SEThunderstormsRain
April 2754°F12°C76°F24°C6 mph10 km/h from SWPartly CloudyThunderstorms
April 2855°F13°C69°F21°C14 mph22 km/h from SRainRain
April 2948°F9°C70°F21°C9 mph14 km/h from WPartly CloudyMostly Clear
April 3054°F12°C80°F27°C10 mph17 km/h from SWMostly ClearMostly Clear
May 156°F13°C72°F22°C13 mph21 km/h from SEDrizzleDrizzle
May 252°F11°C70°F21°C12 mph19 km/h from NWPartly CloudyClear

Yes

Low of 55°F13°C, High of 76°F25°C
Wind: 6 mph10 km/h
Precipitation: 31% rain

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