Waterloo residents can expect a cooler than normal week ahead, but skies are set to clear after a showery weekend. Environment Canada reports no weather alerts are currently in effect for the region as of Monday, August 24, 2026.
Current conditions at the Region of Waterloo International Airport show cloudy skies at 18.4°C with gusty west winds reaching 54 km/h. The week begins with below-average temperatures and lingering showers, but the forecast improves quickly.
By Tuesday, clearing skies will bring mainly sunny conditions and a high of 23°C, with a humidex of 27 and a UV index of 7. Wednesday will be the warmest day at 25°C, though clouds are expected. Thursday brings a 40 percent chance of showers and a high of 24°C, and Friday will be the coolest day at 22°C, about 2°C below the seasonal normal of 24°C.
Showers remain possible throughout the week, with 30 to 40 percent chances on several days. However, the extended forecast from Environment Canada indicates typical late-August variability with no extreme weather expected.
The rainy weekend that preceded this week aligns with a wetter than average August for southern Ontario. Overall precipitation totals are projected to reach 125 mm, which is above average for the region. The extended forecast shows that Waterloo will continue to see a mix of sun and cloud with temperatures gradually climbing to the mid-20s by the weekend.
