Ottawa’s stretch of above-seasonal temperatures will continue today, but you may want to bring the umbrella with you as you head outside. The temperature hit 20.6 C on Monday in Ottawa. Environment Canada’s forecast calls for a mainly cloudy day on Tuesday with a 60 per cent chance of showers. High 15 C. It will be mainly cloudy tonight with a 60 per cent chance of evening showers. Low 10 C. Sunshine returns on Wednesday. High 21 C. Thursday will be cloudy with a 60 per cent chance of showers. High 18 C. The outlook for Friday calls for mainly cloudy. High 15 C. Saturday will be cloudy with a 40 per cent chance of showers. High 9 C. The normal temperatures for this time of year are a high of 8 C and a low of 0 C.