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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the True North Brief Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
A winter storm warning is active for Oshawa: 15–25 cm of snow with gusts to 70 km/h through tonight. This lake-effect band is the strongest since early December, making travel hazardous into Friday morning.
What is the current Oshawa weather alert?
Environment and Climate Change Canada issued the warning at 11:30 AM EST. Snowfall rates of 2–4 cm per hour will reduce visibility to near zero at times. The Canada weather hub tracks these bands in real time. Gusts from the north-west will cause blowing snow, especially on exposed sections of Highway 401 and 407.
How long will the storm last?
The heaviest snow arrives between 6 PM and midnight, then tapers to flurries by early Friday. Total accumulation: 15–25 cm. After the Weather Warnings Snow page shows clearing, Friday highs will reach -5°C with decreasing wind.
Is there a tornado warning for Oshawa today?
No. The active alert is a winter storm warning. Tornado warnings are extremely rare in December; the current threat is heavy snow and low visibility, not convective storms.
What is the weather in Oshawa for the next 10 days?
After tonight’s storm, Friday clears to partly sunny with a high near -5°C. A mix of sun and cloud continues through the weekend. Another system may bring light snow Monday. The weather in Oshawa 10 days outlook shows seasonable cold.
Should I travel during the Oshawa storm today?
Environment Canada advises postponing non-essential travel until the heaviest snow ends near midnight. Roads will be slippery and visibility low. Check the oshawa storm today updates on the warning page.