Guelph is enjoying a sunny Monday with mild temperatures, marking a calm start to a week that will bring a mix of clear skies and mid-week showers. As of 11:00 a.m. on July 20, 2026, the temperature at the Guelph Turfgrass Institute observation station sat at 20.4°C with humidity at 56%. No weather alerts are in effect for the area.
Environment Canada forecasts a high of 25°C today under sunny skies, slightly below the July normal of 26°C. The humidex will make it feel more like 28°C, and the UV index is rated 9, or very high, so residents heading outdoors should take sun protection. Tuesday will bring showers with a risk of a thunderstorm and a high of 23°C, while Wednesday will be cooler at 20°C with a chance of showers. Sunny conditions return Thursday and Friday, with a mix of sun and cloud Saturday, and temperatures climbing back to 25°C and 26°C.
The week’s weather aligns with broader summer patterns. Environment Canada’s seasonal outlook predicts warmer-than-normal temperatures across most of Canada, with an El Nino transition developing. The Weather Network has described Ontario’s summer as changeable and inconsistent, with more days featuring showers and thunderstorms expected, though not a washout.
Temperatures today are within typical July range, and despite the mid-week rain risk, the overall forecast offers plenty of sunny afternoons for outdoor plans.
