Ottawa residents will want to grab the umbrella as they head outside today, with 10 to 20 millimetres of rain expected today and tonight. Environment Canada’s forecast calls for showers to begin near noon, with the risk of an afternoon thunderstorm. Ottawa could see 5 to 10 mm of rain today. High 23 C with the humidex making it feel like 30. Showers will continue this evening and end near midnight. It will be partly cloudy with a 40 per cent chance of showers overnight. Another five to 10 mm of rain is expected. Low 16 C. Thursday will see a mix of sun and cloud. High 22 C. Friday will be sunny. High 22 C. The outlook for Saturday calls for sunshine and a high of 25 C. Sunday will be cloudy with a 60 per cent chance of showers. High 23 C. The normal temperatures for this time of year are a high of 20 C and a low of 11 C. Ottawa has already received 36 mm of rain in September, including 29.1 mm of rain on Sept. 2 and 2.2 mm of rain on Tuesday.
