Residents in Waterloo, Ontario, should prepare for a shift in weather this week as Environment Canada predicts a transition from sunshine to incoming rain and a risk of thunderstorms starting overnight Monday, April 27, 2026.
The region is seeing temperatures roughly 10 degrees Celsius above seasonal norms, with a high of 16 degrees expected today. However, conditions are set to change after midnight as cloud cover increases and rain begins. Environment Canada notes that the incoming weather will bring a risk of thunderstorms before morning, with wind gusts potentially reaching 50 kilometres per hour.
The wet weather is expected to continue through Tuesday, April 28, with 10 to 15 millimetres of precipitation forecast. Winds will also strengthen, with gusts reaching up to 60 kilometres per hour. While there were no official weather alerts in effect for the Kitchener-Cambridge-Waterloo area as of 12:45 p.m. on Monday, federal forecasters are keeping a close watch on the situation.
The Grand River Conservation Authority, which has been monitoring water levels throughout the spring due to above-average snowpack, is tracking the potential for runoff. Because the ground remains saturated from recent rainfall and melting snow, it has a reduced ability to absorb more water. This saturation increases the risk of water pooling on roads and in low-lying areas during the upcoming showers.
Residents planning outdoor activities for the next two days should consider potential adjustments to their plans to account for the wet conditions. Local updates regarding emergency management and conditions can be monitored through the Region of Waterloo.
