September Outlook: Warmer Nationwide, With One Big Exception

September 1 marks the first day of the meteorological fall. What does Mother Nature have in store for the weather this month in the U.S., and how will a strengthening El Niño impact what you normally expect to see during the first month of the fall season? We have all of the details for you here.

September's Temperature Outlook

A new long-range outlook released by Atmospheric G2 and The Weather Company is signaling that above-average temperatures will be the story for much of the country. The greatest departure from normal is forecast to stretch across the nation's mid-section from North Dakota to the south through the Plains states and into Texas. Temperatures will hover well above average readings in cities such as Omaha, Kansas City, Tulsa, Oklahoma City, and Dallas.

It will be warmer than usual throughout the Gulf Coast, the Mississippi Valley, the Ohio Valley, and the Great Lakes. It will also be warmer than what you would normally expect for the Rocky Mountain region and the mid-Atlantic.

Temperatures will trend just slightly warmer for the Desert Southwest and the Northeast. While the anticipated readings are still expected to hit above normal, the departure from average will be significantly less dramatic than what is expected for the Plains.

The only corner of the country that is expected to be cooler than usual is the Pacific Northwest. Although the noticeable decline in temperatures may be a bummer to those wanting to hold on to summer a little longer, the cooldown will provide relief to fire crews that have been dealing with a brutal wildfire season in this corner of the country. Cities such as Seattle, Portland, Boise, and Reno will all experience the slide in temperatures.