AI-assisted summary

An Arctic front is bringing the coldest air of the season to all 48 contiguous states this weekend.

Temperatures are expected to drop below freezing across the country, from the northern Rockies to Florida.

Northern Ohio may see its first lake-effect snow of the season this weekend into early next week.

La Niña conditions are expected to persist through winter, potentially bringing colder temperatures and more snow to northern states.

An arctic front is diving deep into the United States this weekend, sending temperatures plummeting across all 48 contiguous states and bringing snow into the forecast across much of Ohio .

The widespread cold blast will deliver the season’s most significant chill so far, with many areas expecting their first hard freeze and m

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