On January 23, 1916 the World record 24-hour variation in temperature was set. Browning, Montana, in the northern part of the state, hard against the Canadian border reached a temperature of 44 degrees F in the late morning hours as warm air surged in from the southeast. The air mass that held sway in the region came all the way from the Gulf of Mexico and the folks in Browning that morning were looking forward to a relatively balmy day. The average high temperature on January 23 is 33 and the record high is near 50 – so it was quite warm for that time of the year. But the weather was about to turn a “Siberian Express” cold front came through, quickly dropping the temperature below freezing. The temperature continued to drop, reaching 56 degrees below zero F. A one-day variation of exactly 100 degrees and also the greatest 24-hour temperature drop in history.
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