Yes

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

Why? Because there's a refreshing nip in the air.
48°F9°C & Cloudy

Wind is 6 mph9 km/h from the W, gusting to 12 mph19 km/h
April 19
10pm48°F9°C6 mph9 km/h WCloudy
11pm48°F9°C6 mph10 km/h WCloudy
April 20
12am47°F8°C7 mph11 km/h WCloudy
1am46°F8°C7 mph12 km/h WMostly Cloudy
2am45°F7°C8 mph13 km/h WMostly Clear
3am43°F6°C9 mph14 km/h WMostly Clear
4am42°F6°C9 mph15 km/h WMostly Clear
5am41°F5°C9 mph15 km/h NWClear
6am39°F4°C8 mph13 km/h NWMostly Clear
7am38°F3°C8 mph12 km/h NWMostly Clear
8am39°F4°C9 mph14 km/h NWMostly Clear
9am40°F4°C12 mph19 km/h NWMostly Clear
DateLowHighWindDayNight
April 1947°F8°C64°F18°C10 mph15 km/h from NWMostly CloudyPartly Cloudy
April 2038°F3°C51°F11°C12 mph19 km/h from NWMostly ClearMostly Cloudy
April 2135°F2°C55°F13°C9 mph14 km/h from NWPartly CloudyMostly Clear
April 2236°F2°C62°F17°C7 mph11 km/h from SWMostly ClearMostly Cloudy
April 2345°F7°C65°F18°C16 mph26 km/h from SWWindyRain
April 2441°F5°C59°F15°C11 mph18 km/h from NWMostly ClearPartly Cloudy
April 2536°F2°C59°F15°C6 mph10 km/h from EPartly CloudyMostly Cloudy

Yes

Low of 38°F4°C, High of 51°F11°C
Wind: 12 mph19 km/h
Precipitation: None

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