Yes

you do need a jacket based on the weather in Philip Nel Park, Pretoria, 0029, South Africa 1 second ago

Why? Because the air feels like the cozy middle ground between summer and winter!
59°F15°C & Clear

Wind is 7 mph11 km/h from the Southwest, gusting to 17 mph27 km/h
July 4
7am60°F16°C7 mph12 km/h SouthwestClear
8am62°F17°C8 mph12 km/h SouthwestClear
9am63°F17°C7 mph11 km/h SouthwestClear
10am63°F17°C6 mph10 km/h SouthwestClear
11am61°F16°C5 mph8 km/h SouthwestClear
12pm58°F14°C4 mph7 km/h SouthwestClear
1pm55°F13°C4 mph7 km/h SouthClear
2pm51°F11°C4 mph6 km/h SouthClear
3pm49°F9°C4 mph6 km/h SouthClear
4pm46°F8°C4 mph6 km/h SouthClear
5pm44°F7°C3 mph6 km/h SouthClear
6pm42°F6°C3 mph5 km/h SouthClear
DateLowHighWindDayNight
July 342°F6°C63°F17°C6 mph10 km/h from SouthwestClearClear
July 436°F2°C65°F18°C4 mph6 km/h from WestClearClear
July 543°F6°C67°F20°C7 mph12 km/h from WestClearClear
July 640°F4°C62°F16°C5 mph8 km/h from SoutheastClearClear
July 741°F5°C61°F16°C5 mph8 km/h from NortheastClearClear
July 841°F5°C63°F17°C4 mph6 km/h from NorthwestClearClear
July 942°F5°C66°F19°C4 mph6 km/h from WestClearClear

Yes

Low of 37°F3°C, High of 65°F19°C
Wind: 4 mph6 km/h
Precipitation: None

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