Yes

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

Why? Because it's not very warm out and it's so windy, your hat has officially retired from your head!
51°F11°C & Partly Cloudy

Wind is 7 mph12 km/h from the West, gusting to 19 mph31 km/h
November 10
11am51°F11°C8 mph12 km/h WestPartly Cloudy
12pm50°F10°C7 mph11 km/h WestPartly Cloudy
1pm50°F10°C8 mph13 km/h WestPartly Cloudy
2pm49°F9°C8 mph13 km/h SouthwestMostly Cloudy
3pm48°F9°C9 mph15 km/h SouthwestDrizzle
4pm47°F8°C9 mph15 km/h SouthwestCloudy
5pm47°F8°C10 mph16 km/h SouthwestPartly Cloudy
6pm45°F7°C10 mph17 km/h SouthwestMostly Clear
7pm44°F7°C9 mph14 km/h SouthwestMostly Clear
8pm44°F6°C7 mph12 km/h SouthwestMostly Clear
9pm46°F8°C9 mph14 km/h SouthwestMostly Clear
10pm49°F9°C11 mph18 km/h SouthwestMostly Clear
DateLowHighWindDayNight
November 945°F7°C61°F16°C9 mph14 km/h from WestMostly CloudyDrizzle
November 1041°F5°C61°F16°C10 mph16 km/h from SouthwestMostly ClearClear
November 1139°F4°C70°F21°C6 mph10 km/h from NorthwestMostly ClearPartly Cloudy
November 1249°F10°C64°F18°C8 mph12 km/h from NorthRainRain
November 1351°F11°C65°F18°C9 mph14 km/h from WestPartly CloudyMostly Cloudy
November 1450°F10°C67°F20°C7 mph11 km/h from WestPartly CloudyPartly Cloudy
November 1549°F10°C62°F17°C16 mph25 km/h from WestWindyMostly Cloudy

Yes

Low of 41°F5°C, High of 62°F17°C
Wind: 10 mph16 km/h
Precipitation: None

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