Yes

you do need a jacket based on the weather in Mount Barker SA 5251, Australia 1 second ago

Why? Because there's a refreshing nip in the air.
46°F8°C & Mostly Clear

Wind is 2 mph3 km/h from the E, gusting to 5 mph8 km/h
April 26
10am45°F7°C2 mph4 km/h EMostly Clear
11am45°F7°C2 mph4 km/h EMostly Clear
12pm44°F7°C3 mph4 km/h NEPartly Cloudy
1pm43°F6°C2 mph4 km/h NEMostly Cloudy
2pm42°F6°C2 mph4 km/h NMostly Cloudy
3pm42°F6°C3 mph4 km/h NMostly Cloudy
4pm42°F5°C3 mph4 km/h NCloudy
5pm43°F6°C3 mph5 km/h NECloudy
6pm45°F7°C4 mph6 km/h NECloudy
7pm49°F10°C3 mph5 km/h NECloudy
8pm53°F12°C4 mph6 km/h NEMostly Cloudy
9pm57°F14°C4 mph6 km/h NMostly Cloudy
DateLowHighWindDayNight
April 2545°F7°C61°F16°C4 mph6 km/h from SMostly CloudyPartly Cloudy
April 2642°F5°C63°F17°C3 mph5 km/h from NMostly CloudyMostly Cloudy
April 2747°F9°C69°F21°C8 mph13 km/h from NWMostly ClearCloudy
April 2849°F9°C60°F16°C10 mph16 km/h from SMostly CloudyMostly Clear
April 2943°F6°C58°F15°C12 mph19 km/h from SEMostly ClearMostly Clear
April 3044°F7°C61°F16°C10 mph16 km/h from SEMostly ClearMostly Clear
May 145°F7°C61°F16°C7 mph11 km/h from SEMostly ClearMostly Clear

Yes

Low of 42°F6°C, High of 63°F17°C
Wind: 3 mph5 km/h
Precipitation: None

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