Ontario Highway 401 Current Weather Conditions with Radar. See 12 hour weather, wind, and temperature forecast on the Ontario Highway 401 corridor. Check conditions hour by hour with the time slider, switch between weather, temperature and wind views, and watch live radar for the route.
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Along Ontario Highway 401, expect mostly cloudy to overcast skies throughout the forecast period with no significant precipitation. Temperatures will be mild, generally in the mid-50s to mid-60s Fahrenheit. Winds will remain light to moderate with gusts mostly below 20 mph, so no strong wind concerns are expected.