Yes

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

Why? Because it's not very warm out.
57°F14°C & Cloudy

Wind is 7 mph12 km/h from the SE, gusting to 16 mph25 km/h
April 19
1pm59°F15°C7 mph11 km/h SECloudy
2pm61°F16°C6 mph10 km/h SECloudy
3pm64°F18°C7 mph11 km/h SECloudy
4pm64°F18°C7 mph12 km/h SEMostly Cloudy
5pm65°F18°C7 mph12 km/h SEMostly Cloudy
6pm64°F18°C6 mph10 km/h SEMostly Cloudy
7pm63°F17°C6 mph9 km/h SEMostly Cloudy
8pm61°F16°C5 mph8 km/h SMostly Cloudy
9pm59°F15°C5 mph8 km/h SEMostly Cloudy
10pm58°F14°C5 mph9 km/h SMostly Cloudy
11pm57°F14°C5 mph8 km/h SMostly Cloudy
April 20
12am57°F14°C5 mph8 km/h SMostly Cloudy
DateLowHighWindDayNight
April 1948°F9°C65°F18°C7 mph11 km/h from SECloudyDrizzle
April 2049°F10°C69°F20°C10 mph15 km/h from NWPartly CloudyPartly Cloudy
April 2141°F5°C59°F15°C7 mph10 km/h from NWCloudyPartly Cloudy
April 2242°F5°C65°F18°C5 mph8 km/h from NWClearClear
April 2344°F7°C69°F21°C9 mph14 km/h from SMostly ClearMostly Cloudy
April 2446°F8°C65°F18°C12 mph19 km/h from NWPartly CloudyMostly Clear
April 2539°F4°C58°F15°C8 mph12 km/h from NWMostly ClearMostly Clear

Yes

Low of 49°F10°C, High of 69°F21°C
Wind: 10 mph15 km/h
Precipitation: None

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