Yes

you do need a jacket based on the weather in Decatur, IN 46733, USA 1 second ago

Why? Because it's FREEZING out there!
28°F-2°C & Clear

Wind is 5 mph8 km/h from the SW, gusting to 9 mph14 km/h
March 28
8am28°F-2°C6 mph9 km/h SWClear
9am32°F0°C7 mph11 km/h SWClear
10am37°F3°C8 mph13 km/h SWClear
11am41°F5°C9 mph14 km/h SWClear
12pm44°F6°C10 mph16 km/h WMostly Clear
1pm46°F8°C11 mph18 km/h WMostly Clear
2pm48°F9°C13 mph22 km/h WPartly Cloudy
3pm49°F9°C15 mph23 km/h WMostly Cloudy
4pm50°F10°C15 mph24 km/h WPartly Cloudy
5pm50°F10°C15 mph23 km/h WMostly Cloudy
6pm50°F10°C12 mph19 km/h WMostly Cloudy
7pm49°F9°C9 mph14 km/h WPartly Cloudy
DateLowHighWindDayNight
March 2827°F-3°C50°F10°C11 mph17 km/h from WMostly ClearMostly Cloudy
March 2935°F2°C60°F15°C4 mph7 km/h from WPartly CloudyRain
March 3046°F8°C64°F18°C16 mph25 km/h from WRainMostly Cloudy
March 3140°F4°C53°F11°C7 mph12 km/h from EMostly CloudyRain
April 143°F6°C64°F18°C9 mph15 km/h from SERainRain
April 240°F4°C56°F13°C14 mph23 km/h from NWRainRain
April 334°F1°C49°F10°C16 mph25 km/h from NWWindyPartly Cloudy

Yes

Low of 35°F2°C, High of 60°F16°C
Wind: 4 mph7 km/h
Precipitation: None

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