Yes

you do need a jacket based on the weather in Glen Burnie, MD, USA 1 second ago

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

Wind is 9 mph14 km/h from the NW, gusting to 21 mph33 km/h
March 28
11pm46°F8°C10 mph16 km/h NWMostly Cloudy
March 29
12am45°F7°C12 mph19 km/h NWMostly Clear
1am43°F6°C12 mph19 km/h NWMostly Clear
2am42°F6°C11 mph18 km/h NWClear
3am40°F5°C9 mph15 km/h NWClear
4am39°F4°C7 mph11 km/h NWClear
5am38°F3°C7 mph11 km/h NWClear
6am37°F3°C7 mph10 km/h NWClear
7am36°F2°C7 mph11 km/h WClear
8am38°F4°C6 mph10 km/h WClear
9am43°F6°C7 mph12 km/h WMostly Clear
10am47°F8°C9 mph14 km/h WMostly Clear
DateLowHighWindDayNight
March 2845°F7°C53°F12°C4 mph6 km/h from NWCloudyPartly Cloudy
March 2936°F2°C60°F15°C13 mph20 km/h from NWMostly ClearClear
March 3036°F2°C61°F16°C6 mph9 km/h from SWMostly CloudyPartly Cloudy
March 3149°F9°C66°F19°C6 mph10 km/h from NWMostly CloudyRain
April 146°F8°C53°F12°C8 mph13 km/h from ERainRain
April 245°F7°C60°F16°C6 mph9 km/h from ERainDrizzle
April 342°F6°C58°F14°C13 mph21 km/h from WDrizzlePartly Cloudy

Yes

Low of 37°F3°C, High of 60°F16°C
Wind: 13 mph20 km/h
Precipitation: None

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