Yes

you do need a jacket based on the weather in Leeming WA 6149, Australia 1 second ago

Why? Because it's cool. Pleasantly cool, but cool!
51°F10°C & Mostly Clear

Wind is 7 mph12 km/h from the South, gusting to 15 mph24 km/h
October 20
6pm50°F10°C7 mph12 km/h SouthMostly Clear
7pm50°F10°C7 mph12 km/h SouthPartly Cloudy
8pm49°F10°C7 mph12 km/h SouthPartly Cloudy
9pm50°F10°C7 mph11 km/h SouthMostly Clear
10pm50°F10°C6 mph10 km/h SouthMostly Clear
11pm52°F11°C6 mph10 km/h SouthMostly Clear
October 21
12am56°F13°C6 mph10 km/h SouthMostly Clear
1am60°F15°C7 mph11 km/h SouthMostly Clear
2am63°F17°C8 mph12 km/h SouthPartly Cloudy
3am65°F18°C6 mph10 km/h SouthMostly Clear
4am66°F19°C8 mph13 km/h SouthwestPartly Cloudy
5am67°F20°C9 mph14 km/h SouthwestPartly Cloudy
DateLowHighWindDayNight
October 2049°F10°C68°F20°C9 mph14 km/h from SouthwestMostly ClearMostly Clear
October 2149°F9°C71°F21°C7 mph11 km/h from SouthwestMostly ClearMostly Cloudy
October 2251°F11°C67°F20°C10 mph16 km/h from SouthwestPartly CloudyPartly Cloudy
October 2353°F12°C65°F19°C13 mph20 km/h from SouthwestPartly CloudyMostly Clear
October 2450°F10°C70°F21°C7 mph12 km/h from SouthwestMostly ClearMostly Clear
October 2551°F11°C77°F25°C8 mph13 km/h from WestClearMostly Clear
October 2655°F13°C81°F27°C8 mph14 km/h from SouthClearClear

Yes

Low of 49°F10°C, High of 71°F22°C
Wind: 7 mph11 km/h
Precipitation: None

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