Pretoria and Johannesburg are set for a mild, mostly sunny weekend before cooler and wetter conditions arrive early next week. Johannesburg is expected to be slightly cooler, with highs of 21°C on Friday and Saturday and lows between 10°C and 11°C. Johannesburg is also expected to stay slightly cooler at 21°C under sunny skies, with an overnight low of 10°C. Rain and colder temperatures forecast for early next weekThe pleasant weekend weather is not expected to last, with the weather service forecasting a shift towards rain and cooler temperatures from Monday. The cooling trend will continue into Tuesday and Wednesday, according to the forecast, with cloudy conditions and a further drop in temperatures expected.