Yes

you do need a jacket based on the weather in Dallas (Dallas Downtown Historic District), Texas, United States 2 minutes ago

Why? Because it's fairly windy outside!
77°F25°C & Cloudy

Wind is 10 mph16 km/h from the Southeast, gusting to 19 mph31 km/h
May 19
12am77°F25°C10 mph17 km/h SoutheastCloudy
1am76°F25°C9 mph15 km/h SoutheastMostly Cloudy
2am76°F24°C11 mph17 km/h SouthCloudy
3am75°F24°C12 mph20 km/h SouthCloudy
4am75°F24°C13 mph20 km/h SouthCloudy
5am74°F24°C11 mph18 km/h SouthCloudy
6am75°F24°C11 mph17 km/h SouthCloudy
7am75°F24°C11 mph18 km/h SouthCloudy
8am75°F24°C12 mph19 km/h SouthCloudy
9am76°F24°C11 mph17 km/h SouthCloudy
10am76°F25°C11 mph18 km/h SouthCloudy
11am77°F25°C12 mph19 km/h SouthCloudy
DateLowHighWindDayNight
May 1873°F23°C83°F29°C7 mph12 km/h from SouthCloudyMostly Cloudy
May 1974°F24°C84°F29°C14 mph22 km/h from SouthThunderstormsMostly Clear
May 2069°F21°C83°F28°C10 mph16 km/h from NorthwestClearClear
May 2163°F17°C88°F31°C6 mph10 km/h from SouthMostly ClearMostly Cloudy
May 2266°F19°C91°F33°C6 mph10 km/h from EastMostly ClearPartly Cloudy
May 2368°F20°C89°F31°C9 mph15 km/h from SouthMostly ClearPartly Cloudy
May 2473°F23°C92°F33°C10 mph17 km/h from SouthPartly CloudyPartly Cloudy

No

Low of 74°F24°C, High of 83°F29°C
Wind: 14 mph22 km/h
Precipitation: 52% rain

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