Yes

you do need a jacket based on the weather in Newcastle NSW, Australia 1 second ago

Why? Because sorry, it's too cool for just a hoodie and it's fairly windy outside!
53°F12°C & Cloudy

Wind is 12 mph20 km/h from the Southwest, gusting to 24 mph39 km/h
July 31
7am53°F12°C13 mph20 km/h SouthwestCloudy
8am52°F11°C12 mph20 km/h SouthwestRain
9am51°F11°C12 mph19 km/h SouthwestMostly Cloudy
10am51°F11°C11 mph17 km/h SouthwestDrizzle
11am51°F10°C11 mph17 km/h SouthwestDrizzle
12pm51°F10°C9 mph15 km/h SouthwestDrizzle
1pm50°F10°C11 mph17 km/h SouthwestRain
2pm50°F10°C9 mph15 km/h SouthwestDrizzle
3pm50°F10°C9 mph14 km/h SouthwestRain
4pm51°F11°C9 mph14 km/h SouthwestRain
5pm51°F11°C8 mph12 km/h SouthwestDrizzle
6pm52°F11°C7 mph12 km/h SouthwestRain
DateLowHighWindDayNight
July 3051°F11°C58°F15°C13 mph21 km/h from SouthRainRain
July 3150°F10°C57°F14°C8 mph12 km/h from SouthRainRain
August 153°F11°C59°F15°C15 mph24 km/h from SoutheastRainRain
August 256°F14°C64°F18°C17 mph27 km/h from SoutheastRainDrizzle
August 358°F14°C65°F19°C9 mph15 km/h from SoutheastDrizzleDrizzle
August 455°F13°C66°F19°C4 mph7 km/h from NorthwestPartly CloudyMostly Clear
August 553°F12°C64°F18°C7 mph11 km/h from SouthwestPartly CloudyMostly Cloudy

Yes

Low of 50°F10°C, High of 57°F14°C
Wind: 8 mph12 km/h
Precipitation: 98% rain

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