Yes

you do need a jacket based on the weather in Reston, VA, USA 5 minutes ago

Why? Because it's pretty chilly!
57°F14°C & Cloudy

Wind is 5 mph8 km/h from the North, gusting to 12 mph20 km/h
April 23
2am56°F14°C6 mph10 km/h NorthMostly Cloudy
3am55°F13°C5 mph8 km/h NorthMostly Cloudy
4am53°F12°C5 mph8 km/h NorthMostly Cloudy
5am52°F11°C5 mph9 km/h NorthPartly Cloudy
6am51°F10°C6 mph9 km/h NorthMostly Cloudy
7am51°F11°C6 mph9 km/h NorthMostly Cloudy
8am55°F13°C6 mph9 km/h NortheastMostly Cloudy
9am59°F15°C6 mph10 km/h NortheastPartly Cloudy
10am63°F17°C6 mph10 km/h NortheastPartly Cloudy
11am66°F19°C5 mph9 km/h NortheastPartly Cloudy
12pm69°F21°C5 mph8 km/h NortheastPartly Cloudy
1pm71°F22°C4 mph6 km/h NortheastPartly Cloudy
DateLowHighWindDayNight
April 2350°F10°C75°F24°C4 mph7 km/h from NortheastPartly CloudyMostly Clear
April 2452°F11°C77°F25°C7 mph11 km/h from SouthMostly ClearMostly Clear
April 2553°F11°C77°F25°C7 mph12 km/h from SouthPartly CloudyDrizzle
April 2653°F12°C76°F25°C9 mph15 km/h from WestRainClear
April 2746°F8°C68°F20°C8 mph13 km/h from NorthClearClear
April 2846°F8°C72°F22°C5 mph8 km/h from SouthMostly ClearMostly Clear
April 2954°F12°C82°F28°C8 mph13 km/h from SouthMostly ClearPartly Cloudy

Yes

Low of 52°F11°C, High of 78°F26°C
Wind: 7 mph11 km/h
Precipitation: None

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