Yes

you do need a jacket based on the weather in Shillong, Meghalaya, India 1 second ago

Why? Because a little drizzle out!
71°F22°C & Drizzle

Wind is 1 mph1 km/h from the Southwest, gusting to 4 mph6 km/h
September 10
9am70°F21°C1 mph2 km/h SouthDrizzle
10am69°F21°C1 mph2 km/h SouthCloudy
11am69°F20°C2 mph4 km/h SouthCloudy
12pm68°F20°C3 mph4 km/h SouthCloudy
1pm68°F20°C3 mph5 km/h SouthCloudy
2pm67°F20°C3 mph4 km/h SouthwestCloudy
3pm67°F19°C3 mph5 km/h SouthwestCloudy
4pm67°F19°C3 mph5 km/h SouthwestCloudy
5pm66°F19°C3 mph5 km/h SouthwestCloudy
6pm66°F19°C2 mph4 km/h SouthwestCloudy
7pm65°F18°C2 mph4 km/h SouthwestCloudy
8pm66°F19°C3 mph4 km/h SouthCloudy
DateLowHighWindDayNight
September 966°F19°C77°F25°C1 mph2 km/h from WestRainRain
September 1065°F18°C75°F24°C2 mph2 km/h from SouthRainRain
September 1165°F18°C75°F24°C2 mph2 km/h from EastRainDrizzle
September 1266°F19°C74°F23°C1 mph2 km/h from SouthwestRainRain
September 1366°F19°C71°F22°C2 mph3 km/h from SouthwestRainRain
September 1465°F18°C72°F22°C2 mph3 km/h from EastRainDrizzle
September 1564°F18°C71°F22°C2 mph3 km/h from SouthRainDrizzle

No

Low of 65°F19°C, High of 74°F24°C
Wind: 2 mph2 km/h
Precipitation: 67% rain

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