September has been a very warm month for the entire region, with average temperatures about 7 degrees above normal for the Grand Forks and Fargo areas. The Grand Forks International Airport has already seen 10 days of 80 degrees or higher during September, and the forecast is to be at or above 80 through Sunday. August only saw 8 days of 80 degrees or higher, so September has already surpassed August in terms of 80 degree days. Grand Forks has also been 80 or above for the past 5 days, and if the mercury rises to 80 or above through Sunday, the streak would rise to 8 days. Only June had a longer consecutive day streak of 80 or warmer, with 9 from June 18-26.
Therefore, the area is experiencing one of the warmest periods this summer, and September will likely rank near the top for warmest Septembers on record. A cold front will move through the region Sunday night into Monday, and temperatures will return to more normal levels for next week along with the threat for showers.