Mother Nature could continue to add to its record rainfall totals this weekend, as the rainiest summer in Ottawa’s history draws to a close. Ottawa has received 547.8 mm of rain since June 1, setting a record for the most rain during the summer in the capital’s history. A total of 12.5 mm of rain was recorded at the Ottawa Airport on Thursday, brining the August rainfall total of 142.5 mm. Environment Canada’s forecast calls for a mainly cloudy day on Friday, with a 30 per cent chance of morning showers. High 22 C. It will be partly cloudy tonight. Low 10 C. Saturday will see a mix of sun and cloud. High 24 C. A mix of sun and cloud is expected on Sunday with a 60 per cent chance of showers. High 25 C. The outlook for Monday calls for cloudy with a 40 per cent chance of showers. High 26 C. Tuesday will be cloudy with a 60 per cent chance of showers. High 25 C. The normal temperatures for this time of year are a high of 23 C and a low of 13 C.