NWS issues final September temperature outlook

Most of the lower 48 states are expected to experience above-normal temperatures during the month, excluding much of the Northwest and New England

NWS temp outlook September 2026

Image: NWS

The National Weather Service (NWS) on Monday released its final September temperature outlook, following a preliminary version from mid-August.

What’s happening: The final outlook shifted the regions predicted to experience above-normal temperatures during the month — with ‘normal’ defined as the 30-year average — from the Mountain West to the lower Great Plains. 

  • A cutout containing Kansas City and Oklahoma City faces up to a 70 percent chance of experiencing above-normal temps, per the outlook. 

Yes, but: Much of the Northwest now has equal chances of temperatures being above, near, or below normal in September, a shift from the preliminary outlook, which showed that the region would experience above-normal temperatures.

  • Meanwhile, much of the Midwest is now predicted to experience above-normal temperatures during the month, despite the preliminary outlook showing the region as having equal chances of temps being above, near, or below normal. 

Catch up quick: See the preliminary outlook

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