Sun and warm temperatures are in the forecast for Ottawa this Sunday. Environment Canada calls for a high of 24 C, which feels like 26 with humidex. Clear skies and a low of 10 C are expected for tonight. Monday will see a high of 27 C and sunny skies. A low of 16 C and cloudy periods are anticipated for the night. On Tuesday, the capital will see a high of 26 C with cloudy skies. A low of 18 C and a 30 per cent of showers are expected for the night. The average temperatures for this time of year are a high of 24 C and a low of 14 C.