Yes

you do need a jacket based on the weather in Falls Church, VA 22041, USA 1 second ago

Why? Because it's cold. simple as that.
46°F8°C & Clear

Wind is 3 mph5 km/h from the E, gusting to 7 mph12 km/h
April 26
3am45°F7°C3 mph6 km/h EPartly Cloudy
4am45°F7°C3 mph5 km/h NEPartly Cloudy
5am44°F7°C3 mph5 km/h NEPartly Cloudy
6am45°F7°C4 mph6 km/h NEMostly Cloudy
7am45°F7°C5 mph7 km/h NEMostly Cloudy
8am47°F8°C5 mph9 km/h EMostly Cloudy
9am49°F9°C6 mph9 km/h EPartly Cloudy
10am52°F11°C6 mph10 km/h EPartly Cloudy
11am56°F13°C7 mph11 km/h EPartly Cloudy
12pm59°F15°C7 mph12 km/h EMostly Clear
1pm62°F17°C8 mph12 km/h EMostly Clear
2pm64°F18°C8 mph13 km/h SEPartly Cloudy
DateLowHighWindDayNight
April 2644°F7°C66°F19°C7 mph12 km/h from EPartly CloudyMostly Cloudy
April 2746°F8°C62°F16°C8 mph12 km/h from SECloudyMostly Cloudy
April 2852°F11°C84°F29°C6 mph9 km/h from SWMostly ClearMostly Clear
April 2961°F16°C89°F32°C3 mph5 km/h from SWMostly ClearMostly Clear
April 3063°F17°C87°F30°C7 mph11 km/h from SWMostly CloudyPartly Cloudy
May 162°F16°C85°F29°C4 mph7 km/h from NWMostly ClearPartly Cloudy
May 261°F16°C83°F29°C6 mph10 km/h from SWMostly ClearMostly Clear

Yes

Low of 46°F8°C, High of 62°F17°C
Wind: 8 mph12 km/h
Precipitation: 28% rain

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