John Wheeler, WDAY, Published August 05 2013
Weather Talk: Sudden shift to cooler temps noticeable in short summersDuring the two and a half weeks since July 20, there has not been one day with above-average temperatures. What makes this odd is that it has occurred during what is usually the warmest time of the year.
The sudden shift to cool weather in mid-July happened because a large low-pressure area, which usually hovers over polar regions during summer, dropped southward to the Hudson Bay region, where it remains.
Circulation of air around this low has caused a steady stream of cold fronts. Coming, as it has, from continental central Canada, this air has been lacking humidity, making our weather as dry as it has been cool.
This is no more unusual than getting a sustained mild spell in the middle of winter. But it may be more noticeable owing to the shortness of our summer season. We usually only get about two months of consistently warm weather, and we have just missed almost half of that.
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