Yes

you do need a jacket based on the weather in Vienna, VA 22180, USA 4 seconds ago

Why? Because there's a refreshing nip in the air!
45°F7°C & Cloudy

Wind is 7 mph11 km/h from the Southeast, gusting to 17 mph27 km/h
March 14
11pm45°F7°C7 mph12 km/h SouthCloudy
March 15
12am44°F6°C8 mph13 km/h SouthCloudy
1am43°F6°C7 mph12 km/h SouthCloudy
2am43°F6°C7 mph11 km/h SouthCloudy
3am43°F6°C6 mph10 km/h SoutheastCloudy
4am43°F6°C6 mph10 km/h SouthCloudy
5am43°F6°C6 mph10 km/h SoutheastCloudy
6am43°F6°C6 mph10 km/h SoutheastCloudy
7am44°F6°C6 mph10 km/h SoutheastCloudy
8am44°F6°C6 mph10 km/h SoutheastCloudy
9am45°F7°C7 mph11 km/h SoutheastCloudy
10am47°F8°C7 mph11 km/h SoutheastCloudy
DateLowHighWindDayNight
March 1440°F4°C52°F11°C2 mph3 km/h from SoutheastMostly CloudyCloudy
March 1543°F6°C63°F17°C8 mph13 km/h from SoutheastCloudyMostly Cloudy
March 1657°F14°C68°F20°C16 mph25 km/h from SouthRainDrizzle
March 1742°F5°C59°F15°C13 mph21 km/h from NorthwestMostly CloudyMostly Clear
March 1836°F2°C63°F17°C6 mph9 km/h from NorthwestClearClear
March 1943°F6°C67°F20°C7 mph11 km/h from SoutheastMostly CloudyMostly Cloudy
March 2043°F6°C58°F15°C12 mph20 km/h from SouthwestRainRain

Yes

Low of 43°F6°C, High of 63°F17°C
Wind: 8 mph13 km/h
Precipitation: None

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