With August coming to a close soon, our slide into fall starts in earnest during September. The featured chart displays the period between the average last fall season date for a given high temperature to the average first spring date with the number of days between these two dates shown on the right hand chart. Focusing on the left hand side, the decline in high temperature is roughly 10 degrees per month during the fall season. Meaning that we'd expect to see our last 90 to start September and then our last 80 by the end of September, on average. The actual forecast has us well away from 90 degrees through the end of August!

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