Ottawa residents and tourists may want to keep the umbrella handy today and Thursday, with a chance of rain expected over the next two days. Environment Canada’s forecast calls for increasing cloudiness today with a 40 per cent chance of showers. There is a risk of a thunderstorm. High 25 C with the humidex making it feel like 30. It will be partly cloudy tonight with a 40 per cent chance of showers and the risk of a thunderstorm. Low 14 C. Thursday will see a mix of sun and cloud with a 40 per cent chance of afternoon showers. High 24 C. Sunshine is expected on Friday. High 21 C. The outlook for Saturday calls for mainly sunny conditions. High 25 C. Sunday will be mainly cloudy. High 22 C. The normal temperatures for this time of year are a high of 25 C and a low of 15 C.