Yes

you do need a jacket based on the weather in Oklahoma City, OK, USA 1 second ago

Why? Because the wind could blow a wig clean off your head!

84°F29°C & Clear

Wind is 11 mph18 km/h from the South, gusting to 23 mph37 km/h

Date	Low	High	Wind	Day	Night
June 23	75°F24°C	91°F33°C	10 mph16 km/h from South	Mostly Clear	Mostly Clear
June 24	74°F23°C	91°F33°C	11 mph17 km/h from South	Mostly Clear	Clear
June 25	74°F23°C	90°F32°C	11 mph18 km/h from South	Mostly Clear	Clear
June 26	73°F23°C	90°F32°C	12 mph19 km/h from South	Mostly Clear	Partly Cloudy
June 27	74°F24°C	89°F32°C	11 mph17 km/h from South	Mostly Cloudy	Partly Cloudy
June 28	76°F24°C	91°F33°C	12 mph19 km/h from South	Mostly Clear	Mostly Clear
June 29	75°F24°C	91°F33°C	12 mph19 km/h from South	Partly Cloudy	Mostly Clear

Low of 74°F24°C, High of 91°F33°C
Wind: 11 mph17 km/h
Precipitation: 5% rain