Yes

you do need a jacket based on the weather in Maryland, USA 1 second ago

Why? Because it's quite chilly.
46°F8°C & Cloudy

Wind is 6 mph9 km/h from the SE, gusting to 12 mph20 km/h
April 26
12am46°F8°C6 mph9 km/h SEMostly Cloudy
1am44°F7°C4 mph6 km/h EMostly Cloudy
2am43°F6°C3 mph5 km/h EPartly Cloudy
3am41°F5°C3 mph5 km/h NEMostly Clear
4am40°F5°C4 mph6 km/h NEMostly Clear
5am40°F4°C4 mph7 km/h NEPartly Cloudy
6am41°F5°C5 mph8 km/h NEPartly Cloudy
7am43°F6°C5 mph9 km/h NEPartly Cloudy
8am46°F8°C7 mph11 km/h EPartly Cloudy
9am49°F9°C8 mph12 km/h EMostly Clear
10am53°F12°C8 mph12 km/h EMostly Clear
11am57°F14°C8 mph12 km/h EMostly Clear
DateLowHighWindDayNight
April 2546°F8°C59°F15°C3 mph5 km/h from NEMostly CloudyPartly Cloudy
April 2640°F4°C65°F18°C8 mph13 km/h from EMostly ClearPartly Cloudy
April 2743°F6°C62°F17°C8 mph13 km/h from SECloudyMostly Cloudy
April 2848°F9°C83°F28°C5 mph8 km/h from SWMostly ClearMostly Clear
April 2959°F15°C87°F31°C4 mph6 km/h from SEMostly ClearClear
April 3059°F15°C85°F30°C6 mph9 km/h from SEPartly CloudyPartly Cloudy
May 160°F16°C83°F29°C5 mph9 km/h from SWMostly ClearPartly Cloudy

Yes

Low of 40°F5°C, High of 65°F19°C
Wind: 8 mph13 km/h
Precipitation: None

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