While the recent election was uneventful, Thanksgiving marked a major regime change with our weather as daily highs in the 60s for six days were replaced with highs in the 30s for Des Moines. How extreme was this 30 some degree change between two periods? The featured chart presents the largest change in average high temperature between two consecutive periods of days of a given length. The month during which this extreme drop occurred is presented as well. Almost all of the most extreme drops are in February. The largest values are brief warm air masses that are replaced by snow and very cold air. Our forecast is a slow warm up with highs back to around 60 this weekend.

Voting:
Good = 30
Bad = 4