Kingston, Ontario is in for a wet and stormy start to the week, but relief is on the way. Environment Canada says showers with a risk of thunderstorms will continue through Monday, with 15 to 25 millimetres of rain possible by the end of the day.
As of 2 p.m. on Monday, August 24, 2026, Kingston Airport reported light rainshowers, a temperature of 17 degrees Celsius, and southwest winds gusting to 39 km/h. Humidity sat at 96 per cent, making it feel damp and uncomfortable. Despite the thunderstorm risk, no weather alerts are currently in effect for the Kingston area.
According to The Weather Network, rain is expected to continue through the afternoon, with a 90 per cent chance of precipitation at 3 p.m. and 4 p.m. The risk of thunderstorms returns Monday evening, with a 60 per cent chance of storms around 10 p.m. Showers are expected to taper off near midnight, with an overnight low of 15 degrees.
Tuesday brings a much-needed improvement. Environment Canada forecasts a mix of sun and cloud with a 30 per cent chance of morning showers, a high of 24 degrees, and a humidex of 29. Skies should clear Tuesday night, with a low of 12 degrees.
The rest of the week looks bright for Kingston residents. Wednesday and Saturday are expected to be mainly sunny or a mix of sun and cloud, with highs of 23 or 24 degrees. Thursday carries a 40 per cent chance of showers and an elevated thunderstorm risk through the afternoon, while Friday brings a mix of sun and cloud with a 30 per cent chance of showers. Late-August normals for Kingston are a high of 24 and a low of 13, so the coming days will feel typical for this time of year.
Warm waters on Lake Ontario can sometimes enhance thunderstorm activity along the shoreline in late summer, but Environment Canada has not issued any waterspout watches or warnings for Kingston at this time. Residents should keep an eye on local forecasts and be prepared for quick changes in weather through Monday evening.
