Yes

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

Why? Because it's not very warm out.
53°F11°C & Clear

Wind is 7 mph12 km/h from the N, gusting to 17 mph27 km/h
March 29
3am52°F11°C8 mph13 km/h NClear
4am50°F10°C8 mph14 km/h NClear
5am48°F9°C8 mph13 km/h NClear
6am47°F8°C7 mph11 km/h NClear
7am46°F8°C6 mph10 km/h NClear
8am46°F8°C5 mph9 km/h NClear
9am50°F10°C6 mph9 km/h NClear
10am55°F13°C6 mph9 km/h NClear
11am59°F15°C5 mph8 km/h NEClear
12pm62°F17°C5 mph7 km/h NEClear
1pm64°F18°C3 mph6 km/h NEClear
2pm66°F19°C3 mph5 km/h SEClear
DateLowHighWindDayNight
March 2946°F8°C67°F20°C5 mph8 km/h from NEClearClear
March 3046°F8°C73°F23°C7 mph11 km/h from SWClearMostly Clear
March 3152°F11°C78°F25°C7 mph12 km/h from SWPartly CloudyMostly Cloudy
April 159°F15°C80°F27°C8 mph13 km/h from SWMostly CloudyMostly Cloudy
April 262°F17°C81°F27°C10 mph16 km/h from SWMostly CloudyMostly Cloudy
April 355°F13°C71°F22°C15 mph24 km/h from WRainClear
April 445°F7°C67°F20°C11 mph18 km/h from WClearClear

Yes

Low of 46°F8°C, High of 73°F23°C
Wind: 7 mph11 km/h
Precipitation: None

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