Yes

you do need a jacket based on the weather in Opelousas, LA 70570, USA 1 second ago

Why? Because it's not very warm out and it's really really huffing out there!
57°F14°C & Windy

Wind is 16 mph26 km/h from the Northwest, gusting to 32 mph52 km/h
October 29
3pm58°F14°C18 mph28 km/h NorthwestWindy
4pm60°F16°C19 mph31 km/h NorthwestWindy
5pm62°F17°C20 mph32 km/h NorthwestWindy
6pm63°F17°C20 mph33 km/h NorthwestWindy
7pm64°F18°C21 mph34 km/h NorthwestWindy
8pm64°F18°C21 mph33 km/h NorthwestWindy
9pm63°F17°C20 mph32 km/h NorthwestWindy
10pm61°F16°C18 mph29 km/h NorthwestWindy
11pm59°F15°C15 mph23 km/h NorthwestPartly Cloudy
October 30
12am57°F14°C13 mph21 km/h NorthwestPartly Cloudy
1am55°F13°C12 mph20 km/h NorthwestPartly Cloudy
2am54°F12°C13 mph20 km/h NorthwestMostly Cloudy
DateLowHighWindDayNight
October 2951°F11°C65°F18°C17 mph28 km/h from NorthwestWindyPartly Cloudy
October 3048°F9°C67°F19°C8 mph14 km/h from NorthMostly ClearClear
October 3145°F7°C69°F21°C2 mph4 km/h from NorthClearClear
November 145°F7°C71°F22°C5 mph7 km/h from NortheastPartly CloudyRain
November 248°F9°C68°F20°C10 mph16 km/h from NortheastRainMostly Clear
November 349°F10°C71°F22°C9 mph15 km/h from NorthMostly ClearMostly Clear
November 451°F11°C75°F24°C8 mph14 km/h from NortheastMostly ClearMostly Clear

Yes

Low of 48°F9°C, High of 67°F20°C
Wind: 8 mph14 km/h
Precipitation: None

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