Temperature drops more than 50 degrees as ‘all-out blizzard’ sets sights on Dakotas

A “potentially historic” fall snowstorm is set to wallop a large stretch of the country — evolving into an “all-out blizzard” as it passes over the Dakotas and sending an arctic blast into much of the northern US, forecasters predict.

Denver was downright balmy on Wednesday with a high in the lower 80s — but the temperature had already plummeted into the upper 20s by 1 a.m. as snow began to fall, according to Accuweather. From 1 to 3 inches of snow is expected to fall in the Mile High City on Thursday.