Residents in Perth, Ontario, can expect a break from the dangerous freezing weather as temperatures are forecast to rise significantly by mid‑February. New modelling and The Weather Network’s February outlook indicate a major pattern flip that should end the current stretch of extreme cold and wind chills in the region around Feb. 12–15, 2026.
Since late January, the community and surrounding Lanark County have experienced temperatures falling to about −25°C (with wind chills much colder), which led Environment and Climate Change Canada to issue Extreme Cold Warnings for parts of Eastern Ontario during the late‑January freeze. The deep freeze has been driven by Arctic air and a persistent blocking pattern; current models show milder air from the U.S. Midwest moving into Eastern Ontario and replacing that Arctic air.
The thaw is expected to raise daytime highs to near or above 0°C within a roughly 48‑hour window. While a short warm spell generally reduces immediate home‑heating demand (and the cost pressure of prolonged extreme cold), infrastructure advisers warn homeowners to watch for basement seepage, ‘sweating’ pipes, or other plumbing issues as soils and building envelopes warm unevenly during a rapid thaw.
Following safety guidance from provincial and federal health authorities — for example, the Ontario Ministry of Health and federal preparedness guidance on extreme cold — can help residents stay safe during rapid temperature swings. Practical steps include knowing the location of your main water shut‑off, insulating exposed pipes, and watching for signs of leaks as the ground thaws.
Local officials are also monitoring the Tay River for potential ice jams or rising water levels if the mid‑February warm‑up is accompanied by rain. Drivers should be cautious during the transition: melting snow followed by a nighttime temperature drop can cause black ice or other slippery conditions on area roads.
