Yes

you do need a jacket based on the weather in Myrtle Beach, SC, USA 3 minutes ago

Why? Because rain's coming down!
77°F25°C & Rain

Wind is 7 mph12 km/h from the East, gusting to 14 mph22 km/h
August 11
12am77°F25°C7 mph11 km/h EastRain
1am77°F25°C10 mph16 km/h SoutheastThunderstorms
2am77°F25°C11 mph17 km/h SoutheastThunderstorms
3am77°F25°C10 mph15 km/h SoutheastRain
4am77°F25°C8 mph12 km/h SoutheastDrizzle
5am77°F25°C8 mph14 km/h SoutheastThunderstorms
6am77°F25°C8 mph14 km/h SoutheastThunderstorms
7am77°F25°C8 mph12 km/h SoutheastRain
8am77°F25°C7 mph12 km/h SoutheastDrizzle
9am78°F26°C8 mph12 km/h SoutheastThunderstorms
10am79°F26°C8 mph12 km/h SoutheastRain
11am79°F26°C9 mph15 km/h SoutheastRain
DateLowHighWindDayNight
August 1076°F24°C80°F27°C9 mph14 km/h from EastRainThunderstorms
August 1177°F25°C82°F28°C8 mph13 km/h from SoutheastRainDrizzle
August 1277°F25°C84°F29°C4 mph7 km/h from SoutheastRainMostly Cloudy
August 1377°F25°C87°F31°C8 mph13 km/h from SouthwestRainMostly Clear
August 1478°F26°C89°F32°C8 mph12 km/h from SouthwestPartly CloudyThunderstorms
August 1578°F25°C87°F31°C5 mph8 km/h from SoutheastRainThunderstorms
August 1677°F25°C86°F30°C6 mph10 km/h from NortheastRainDrizzle

No

Low of 77°F25°C, High of 82°F28°C
Wind: 8 mph13 km/h
Precipitation: 82% rain

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