Yes

you do need a jacket based on the weather in Harlan, KY, USA 1 second ago

Why? Because it's bitterly cold.
37°F3°C & Cloudy

Wind is 5 mph8 km/h from the N, gusting to 16 mph26 km/h
March 28
7am37°F3°C5 mph9 km/h NCloudy
8am36°F2°C5 mph8 km/h NCloudy
9am38°F4°C6 mph10 km/h NCloudy
10am41°F5°C7 mph11 km/h NMostly Cloudy
11am44°F6°C7 mph12 km/h NMostly Cloudy
12pm47°F8°C8 mph13 km/h NPartly Cloudy
1pm50°F10°C9 mph15 km/h NClear
2pm53°F12°C10 mph16 km/h NClear
3pm54°F12°C10 mph17 km/h NWClear
4pm55°F13°C11 mph17 km/h NWClear
5pm55°F13°C10 mph17 km/h NWClear
6pm54°F12°C10 mph16 km/h NWClear
DateLowHighWindDayNight
March 2836°F2°C55°F13°C8 mph13 km/h from NPartly CloudyClear
March 2938°F3°C64°F18°C8 mph13 km/h from WMostly ClearPartly Cloudy
March 3045°F7°C69°F21°C9 mph15 km/h from SWPartly CloudyMostly Cloudy
March 3155°F13°C72°F22°C6 mph9 km/h from SWRainDrizzle
April 158°F14°C72°F22°C7 mph12 km/h from SWCloudyDrizzle
April 255°F13°C67°F19°C10 mph17 km/h from SWRainRain
April 342°F5°C55°F13°C11 mph18 km/h from NWMostly CloudyMostly Clear

Yes

Low of 37°F3°C, High of 64°F18°C
Wind: 8 mph13 km/h
Precipitation: None

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