A warm and humid day is expected in Ottawa, but cooler-than-normal temperatures will return for the weekend. Environment Canada’s forecast calls for a mix of sun and cloud today. High 25 C with the humidex making it feel like 30. It will be partly cloudy tonight. Low 12 C. Thursday will see mainly cloudy conditions with a 30 per cent chance of showers late in the morning and in the afternoon. High 22 C. Sunshine returns on Friday. High 17 C. The outlook for Saturday calls for a mix of sun and cloud. High 17 C. Mainly cloudy conditions are expected on Sunday with a 60 per cent chance of showers. High 18 C. The normal temperatures for this time of year are a high of 19 C and a low of 9 C.