Some Outstanding Temperature Falls
In 24 hours: 100°F, Browing, Mont., Jan. 23–24, 1916, from 44°F to –56°F.
In 12 hours: 84°F, Fairfield, Mont., Dec. 24, 1924, from 63°F at noon to –21°F at midnight.
In 2 hours: 62°F, Rapid City, S.D., Jan. 12, 1911, from 49°F at 6:00 A.M. to –13°F at 8:00 A.M.
In 27 minutes: 58°F, Spearfish, S.D., Jan. 22, 1943, from 54°F at 9:00 A.M. to –4°F at 9:27 A.M.
In 15 minutes: 47°F, Rapid City, S.D., Jan. 10, 1911, from 55°F at 7:00 A.M. to 8°F at 7:15 A.M.
Here are the facts and trivia that people are buzzing about.