Ontario

Cornwall Braces for Snow Before Mid-Week Warm-Up

By

Emma Kelly
April 7, 2026 7:43 am

Residents of Cornwall can expect a week of dramatic temperature swings as winter conditions give way to a brief period of spring-like warmth. According to Environment Canada, the week will begin with snow flurries and bitter cold before rising to well above seasonal averages by Thursday.

Tuesday, April 7, is set to be the coldest day of the week, with light flurries and an expected accumulation of 2 to 4 centimetres. The morning will bring a wind chill near -13°C, with temperatures staying quite low throughout the day and dropping to an overnight low of -8°C. These conditions are a reminder of the region’s typical April weather, which often features unpredictable snowfall.

A significant change in the weather is expected to arrive by Thursday, April 9. Forecasters are calling for sunny skies and a high of 15°C. This mid-week jump in temperature is significantly warmer than the seasonal high of 9°C normally seen in Cornwall at this time of year.

The pleasant conditions will be short-lived, however, as rain is expected to return to the area on Friday, April 10. The forecast indicates a 60 percent chance of precipitation with a high of 12°C. The current volatile pattern follows seasonal outlooks from groups like The Weather Network and the Old Farmer’s Almanac, which both predicted a slower, cooler, and wetter start to spring for Ontario this year.

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