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Daryl Ritchison, WDAY, Published September 01 2013

Weather Talk: First frost of fall usually occurs during September

The average high and low today is 77 and 53 degrees. At the end of the month, the average high and low will drop to 64 and 41 degrees.

Although the recent warm weather still has most of us thinking summer, our first frost usually occurs during the month of September. The current 30-year average for first 32-degree or lower temperature of fall is Sept. 30, with the long-term average (all years since 1881) being on Sept. 25.

Last year, even after one of the warmest summers on record, the first frost of autumn occurred early on Sept. 18, with some other locations recording frost on the morning of Sept. 9, when the low reached 36 degrees at Hector International Airport in Fargo.

The past 90 days the average high temperatures have only fluctuated from 74 to 83 degrees, but a much more rapid change usually occurs in September, with noticeably cooler weather coming in the next few weeks.


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