It will be sunny and warm on Saturday to ring in Ottawa’s 200th birthday. Environment Canada’s forecast shows a high of 23 C and clear skies going into the evening. The evening will reach a low of 12 C for the evening festivities. Sunday will be mainly sunny with increasing cloudiness near noon. High 21 C. There will be some cloudy days along with a chance of rain next week. Monday and Tuesday show cloudy skies with highs hovering around 20 C. There is a 30 per cent chance of showers Wednesday. Temperatures remain mostly higher than normal for this time of year. The average high is 17 C, while the average low is 7 C.