Add spaces: Theafternoonwillbringmostlycloudyweather.Morningtemperatureswillbearound27°C.Duringthedaytheywillreachamaximumof35°C.Lowtemperaturesatnightwillbearound27°C.Westerlywindsareweak.

Answer: The afternoon will bring mostly cloudy weather. Morning temperatures will be around 27 °C. During the day they will reach a maximum of 35 °C. Low temperatures at night will be around 27°C. Westerly winds are weak.

Add spaces: Youhaveahelicopterwhichyoumustdestroy:buildings,huntingplanes,tanks,...

Answer: You have a helicopter which you must destroy: buildings, hunting planes, tanks,...

Add spaces: newsletter,mybrotherisdoingwellandhischeckupshavebeenextendedfrom3

Answer:
newsletter, my brother is doing well and his checkups have been extended from 3