5:17 AM

8:17 PM

15 hours 12 minutes

Cold fronts can still pack a wallop this time of year, but you’d be hard pressed to find a more dramatic change than what happened this week back in 1906. The temperature soared to 92 in St. Johnsbury on the 18th, the hottest so early in the season at that time. Then a sharp cold front came through with a thunderstorm on the evening 19th. By the morning of the 21st, thermometers had fallen to 25 degrees with widespread frost.