Yes

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

Why? Because your nose hairs will turn into tiny icicles!
24°F-4°C & Mostly Clear

Wind is 10 mph16 km/h from the Northwest, gusting to 18 mph29 km/h
January 20
11am24°F-4°C11 mph17 km/h NorthwestMostly Cloudy
12pm25°F-4°C12 mph20 km/h NorthwestMostly Cloudy
1pm25°F-4°C12 mph20 km/h NorthwestMostly Cloudy
2pm23°F-5°C13 mph21 km/h NorthwestCloudy
3pm22°F-5°C12 mph19 km/h NorthwestMostly Cloudy
4pm22°F-6°C11 mph18 km/h NorthwestMostly Cloudy
5pm21°F-6°C9 mph15 km/h NorthwestPartly Cloudy
6pm19°F-7°C8 mph12 km/h NorthwestMostly Clear
7pm18°F-8°C7 mph11 km/h NorthwestMostly Clear
8pm17°F-9°C7 mph11 km/h NorthwestMostly Clear
9pm15°F-9°C6 mph10 km/h NorthwestMostly Clear
10pm14°F-10°C6 mph10 km/h NorthwestMostly Clear
DateLowHighWindDayNight
January 2013°F-11°C27°F-3°C10 mph16 km/h from NorthwestPartly CloudyPartly Cloudy
January 2111°F-12°C21°F-6°C4 mph7 km/h from NorthwestCloudyPartly Cloudy
January 229°F-13°C20°F-7°C6 mph10 km/h from NorthwestMostly ClearPartly Cloudy
January 2314°F-10°C32°F-0°C4 mph6 km/h from SouthwestMostly ClearMostly Clear
January 2420°F-7°C34°F1°C6 mph10 km/h from NorthwestClearMostly Clear
January 2520°F-7°C38°F4°C6 mph10 km/h from WestMostly ClearMostly Cloudy
January 2626°F-4°C42°F5°C4 mph7 km/h from SouthwestCloudyMostly Cloudy

Yes

Low of 10°F-12°C, High of 21°F-6°C
Wind: 4 mph7 km/h
Precipitation: None

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