Weather Ottawa, ON 11°C : 10°C Partly cloudy : 9km/h O : 99.9 kPa : 10°C : 94% : 8°C / : 18°C This afternoon 15°C Light rain This evening 12°C Variable cloudiness Tonight 5°C Cloudy periods 18°C : 20% 16°C : 90% 26°C : 30% 25°C : 60%