Environment Canada says most of Ontario is under prolonged extreme cold warnings, with wind chill values reaching -45 degrees in some areas. The weather agency has issued extreme cold warnings for ...

The FOX Forecast Center said temperatures will plummet as much as 45 degrees below average in spots, leading to below-zero temperatures across at least 20 states, from the Plains to the Great ...

Meteorologists predict temperatures could plunge up to 45 degrees below average, engulfing at least 20 states across the Plains, the Great Lakes and the interior Northeast in below-zero temperatures.