It’s expected to be the hottest day of the “multi-day period of heat and humidity conditions” in Ottawa, with the humidex making it feel like 41. A heat warning remains in effect for Ottawa and eastern Ontario, with the hot and humid conditions expected to continue through Tuesday. “The hottest conditions are expected today,” Environment Canada said in a statement. “Daytime high temperatures are expected to lower on Wednesday, bringing an end to the heat event.” The forecast calls for a high of 33 C, the 10th day with temperatures above 30 C in Ottawa in July. The temperature warmed up to 31.2 C on Monday and 30.4 C on Sunday. The record for hottest July 28 is 35 C, set back in 1949. Environment Canada senior climatologist David Phillips says this is the “longest bout” of hot and humid weather Ottawa has seen this summer. Phillips says Ottawa has had 19 days with the temperature near or above 30 C so far this summer, up from 14 all of last summer. “It’s been a warm one. I think, overall, the max temperatures in July have been almost 2 degrees warmer than normal,” Phillips told Newstalk 580 CFRA’s The Morning Rush on Monday. Phillips says the long weekend will be the “Perfect 10” for weather. “Wall-to-wall sun, no threatening weather,” Phillips said. “It’s going to make this heat, if you don’t like it, you’re going to say, ‘well, it is good to live in Ottawa’ because you’re going to be blessed.” Environment Canada says it will be sunny to start today, then becoming a mix of sun and cloud this afternoon. High 33 C. A few clouds tonight. Low 21 C. Tuesday will see sunshine. High 31 C with the humidex making it feel like 37. Wednesday will be cloudy with a 40 per cent chance of showers. High 26 C. The outlook for Thursday calls for sunshine. High 24 C. Friday will be sunny. High 24 C. The normal temperatures for this time of year are a high of 26 C and a low of 16 C.