No

you don't need a jacket based on the weather in Washington, DC, USA 2 minutes ago

82°F28°C & Clear

Wind is 6 mph10 km/h from the Southeast, gusting to 14 mph22 km/h
August 11
9pm80°F26°C7 mph11 km/h SouthClear
10pm78°F25°C6 mph10 km/h SouthClear
11pm76°F24°C5 mph9 km/h SouthClear
August 12
12am75°F24°C4 mph7 km/h SouthClear
1am74°F23°C4 mph6 km/h SouthClear
2am73°F23°C3 mph4 km/h SouthClear
3am73°F23°C3 mph5 km/h SouthMostly Clear
4am73°F23°C3 mph4 km/h SouthMostly Clear
5am72°F22°C2 mph4 km/h SouthPartly Cloudy
6am72°F22°C2 mph4 km/h SouthPartly Cloudy
7am73°F23°C2 mph4 km/h SoutheastPartly Cloudy
8am75°F24°C3 mph5 km/h SouthPartly Cloudy
DateLowHighWindDayNight
August 1168°F20°C88°F31°C3 mph5 km/h from SouthPartly CloudyMostly Clear
August 1272°F22°C88°F31°C5 mph8 km/h from SouthPartly CloudyPartly Cloudy
August 1375°F24°C89°F32°C4 mph7 km/h from SouthwestThunderstormsPartly Cloudy
August 1474°F23°C88°F31°C4 mph7 km/h from NorthwestPartly CloudyPartly Cloudy
August 1574°F24°C88°F31°C4 mph7 km/h from EastPartly CloudyMostly Clear
August 1673°F23°C88°F31°C3 mph5 km/h from SoutheastMostly ClearMostly Clear
August 1773°F23°C90°F32°C5 mph7 km/h from WestPartly CloudyPartly Cloudy

No

Low of 73°F23°C, High of 88°F31°C
Wind: 5 mph8 km/h
Precipitation: 25% rain

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