John Wheeler, WDAY, Published July 08 2013
Weather Talk: Hottest temps in Fargo seen during dry yearsOver the past several decades, our average summer temperatures have risen slightly from the long-term average in the Fargo-Moorhead area. In contrast to this, the frequency of 100-degree temperature days has dropped.
Extremely hot temperatures are most often associated with severely dry weather because of the way dry soil is heated more by solar radiation than wet soil, and our summers have been growing rainier over the past several decades.
Most of the hottest temperatures in the Fargo record book all occurred during extremely dry years, including 114 in 1936, 110 in 1917, 106 in 1976 and 1988.
So how has our average summer temperature risen without any extremely hot temperatures? Most of the warming has occurred at night. The higher humidity associated with heavier rainfall has caused nocturnal summer warming.
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