It will be a sunny and warm start to the weekend in Ottawa, but there is a threat of rain hanging over the capital this weekend. Environment Canada’s forecast calls for a mix of sun and cloud today. High 25 C with the humidex making it feel like 28. It will be clear tonight. Low 12 C. Saturday will start sunny with increasing cloudiness in the afternoon. There is a 30 per cent chance of showers late in the afternoon. High 27 C. Environment Canada says Ottawa will see showers Saturday night. Showers will continue on Sunday. High 22 C. The outlook for Monday calls for a mainly cloudy day with a 40 per cent chance of showers. High 22 C. Tuesday will see a mix of sun and cloud. High 24 C. The normal temperatures for this time of year are a high of 24 C and a low of 14 C. Sun to set before 8 p.m. Friday is the last day the sun will set at 8 p.m. or later this year as the days continue to get longer. The sun is scheduled to set at 8 p.m. The sun will set at 7:58 p.m. on Saturday, according to timeanddate.com. Sunset is scheduled for 7:56 p.m. on Sunday and 7:54 p.m. on Monday.