Lower-than-normal temperatures and rain are in the forecast for Ottawa this Sunday. Environment Canada calls for a high of 13 C and showers ending late this afternoon before becoming cloudy with a 30 per cent chance of showers. A low of 5 C and cloudy skies are expected for tonight. On Monday, a high of 15 C and overcast skies are expected. A low of 6 C and cloudy periods are anticipated overnight. Tuesday will see a mix of sun and cloud and a high of 13 C. Cloudy skies and a low of 8 C are anticipated for the night. The normal temperatures for this time of year are a high of 20 C and a low of 9 C.