Yes

you do need a jacket based on the weather in Fulham SA 5024, Australia 1 second ago

Why? Because it's not very warm out and it's so windy, your hat is now someone else's problem, two cities away!
53°F11°C & Mostly Cloudy

Wind is 14 mph23 km/h from the Northwest, gusting to 28 mph45 km/h
August 28
9am53°F11°C15 mph24 km/h NorthwestMostly Cloudy
10am52°F11°C16 mph26 km/h NorthwestWindy
11am52°F11°C17 mph27 km/h NorthwestRain
12pm51°F11°C18 mph28 km/h NorthwestRain
1pm51°F11°C18 mph29 km/h NorthwestRain
2pm51°F10°C19 mph31 km/h NorthwestRain
3pm50°F10°C20 mph32 km/h NorthwestRain
4pm50°F10°C22 mph35 km/h NorthwestRain
5pm49°F10°C26 mph42 km/h WestRain
6pm48°F9°C25 mph41 km/h WestRain
7pm48°F9°C23 mph37 km/h WestDrizzle
8pm50°F10°C23 mph37 km/h WestWindy
DateLowHighWindDayNight
August 2752°F11°C57°F14°C14 mph23 km/h from NorthwestRainRain
August 2846°F8°C53°F12°C23 mph37 km/h from WestRainRain
August 2944°F7°C56°F13°C11 mph17 km/h from SouthwestMostly CloudyMostly Cloudy
August 3046°F8°C57°F14°C7 mph11 km/h from NorthwestDrizzleDrizzle
August 3147°F8°C58°F14°C6 mph10 km/h from NorthwestDrizzlePartly Cloudy
September 146°F8°C60°F16°C9 mph15 km/h from NorthwestPartly CloudyPartly Cloudy
September 247°F8°C63°F17°C7 mph12 km/h from NorthPartly CloudyMostly Cloudy

Yes

Low of 46°F8°C, High of 53°F12°C
Wind: 23 mph37 km/h
Precipitation: 98% rain

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