No

you don't need a jacket based on the weather in North Potomac, MD, USA 1 second ago

74°F23°C & Cloudy

Wind is 2 mph3 km/h from the Southwest, gusting to 3 mph5 km/h
May 8
7pm73°F23°C1 mph2 km/h WestPartly Cloudy
8pm69°F21°C1 mph1 km/h NortheastCloudy
9pm66°F19°C3 mph4 km/h NortheastCloudy
10pm64°F18°C4 mph7 km/h NorthThunderstorms
11pm62°F17°C5 mph8 km/h NortheastRain
May 9
12am61°F16°C6 mph9 km/h NortheastRain
1am60°F16°C6 mph9 km/h NortheastRain
2am60°F15°C6 mph9 km/h NortheastRain
3am59°F15°C6 mph10 km/h NortheastDrizzle
4am58°F14°C6 mph9 km/h NorthDrizzle
5am57°F14°C6 mph10 km/h NorthDrizzle
6am56°F13°C7 mph12 km/h NorthDrizzle
DateLowHighWindDayNight
May 854°F12°C77°F25°C2 mph3 km/h from WestPartly CloudyThunderstorms
May 951°F10°C63°F17°C9 mph14 km/h from NorthRainClear
May 1046°F8°C70°F21°C9 mph15 km/h from NorthwestMostly ClearMostly Cloudy
May 1152°F11°C74°F23°C4 mph7 km/h from NorthMostly CloudyMostly Cloudy
May 1256°F13°C71°F22°C5 mph9 km/h from SouthCloudyDrizzle
May 1361°F16°C70°F21°C8 mph12 km/h from SoutheastRainRain
May 1460°F16°C70°F21°C5 mph8 km/h from EastDrizzleDrizzle

Yes

Low of 51°F11°C, High of 63°F17°C
Wind: 9 mph14 km/h
Precipitation: 79% rain

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