Yes

you do need a jacket based on the weather in Hattiesburg, MS 39401, USA 1 second ago

Why? Because it's so windy, your hat has officially retired from your head!
60°F16°C & Cloudy

Wind is 10 mph16 km/h from the Southwest, gusting to 22 mph36 km/h
January 18
3am60°F16°C10 mph15 km/h SouthwestThunderstorms
4am60°F16°C7 mph11 km/h SouthThunderstorms
5am60°F16°C8 mph14 km/h SouthwestThunderstorms
6am60°F16°C8 mph13 km/h SouthwestCloudy
7am61°F16°C8 mph14 km/h SouthwestCloudy
8am61°F16°C9 mph15 km/h SouthwestPartly Cloudy
9am62°F17°C9 mph15 km/h SouthwestMostly Cloudy
10am65°F18°C10 mph16 km/h SouthwestMostly Cloudy
11am67°F19°C10 mph17 km/h SouthwestMostly Cloudy
12pm69°F21°C10 mph16 km/h SouthwestMostly Cloudy
1pm71°F22°C10 mph16 km/h SouthwestPartly Cloudy
2pm72°F22°C10 mph16 km/h SouthwestPartly Cloudy
DateLowHighWindDayNight
January 1849°F9°C73°F23°C9 mph14 km/h from SouthwestPartly CloudyPartly Cloudy
January 1925°F-4°C49°F9°C12 mph20 km/h from NorthwestClearClear
January 2020°F-6°C40°F4°C8 mph13 km/h from NortheastClearMostly Cloudy
January 2122°F-5°C34°F1°C9 mph14 km/h from NorthSnowSnow
January 2218°F-8°C42°F6°C4 mph7 km/h from NortheastClearMostly Clear
January 2319°F-7°C45°F7°C3 mph6 km/h from NorthPartly CloudyMostly Clear
January 2426°F-3°C51°F11°C6 mph9 km/h from NorthwestMostly ClearDrizzle

Yes

Low of 25°F-4°C, High of 49°F10°C
Wind: 12 mph20 km/h
Precipitation: None

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