CHARLOTTE, NORTH CAROLINA — It is hard to say the Carolinas have dramatically cooler weather ahead; maybe just not as hot is a better way to put it, according to a forecast update tagged with the #cltwx, #ncwx and #scwx hashtags. Average highs across the region by the end of September typically sit in the upper 70s, with average lows in the upper 50s, and for there to be any blue, below-normal shading on the latest outlook maps, temperatures would need to drop below those marks, something forecasters say is not very likely right now. The good news is the pattern looks wetter, which the region badly needs, marking a small but real pattern change even if it falls short of what fall lovers are hoping for.
Why the End of September Pattern Will Feel Warm, Not Truly Cool
Forecasters were direct about tempering expectations for a dramatic cooldown, noting that even a best-case scenario of highs in the low 80s and lows in the low 60s would still sit above average for this point in the calendar. With climatological normals by the end of September running to highs in the upper 70s and lows in the upper 50s, any meaningful stretch of truly below-normal temperatures remains unlikely under the current pattern, even as conditions gradually trend away from the hottest stretch of the month.
CPC Temperature Outlook Shows Above Normal Heat Blanketing Nearly the Entire Eastern US Through September 25
A Temperature Outlook from the Climate Prediction Center, valid September 21 through September 25, shows above normal temperatures favored across nearly the entire eastern half of the country. The deepest, most confident above-normal shading covers a broad swath running from Texas and Louisiana through the Deep South, including Nashville, Memphis, Atlanta and Charlotte, and up the Eastern Seaboard through Virginia Beach. That same deep above-normal signal extends south through Jacksonville, Tampa and Miami, making the Southeast and Gulf Coast the areas with the highest confidence in continued warmth.
Upper Midwest Sees Lighter Above-Normal Signal While Deep South Locks In Well Above Normal Heat
Farther north, the above-normal signal weakens somewhat but still covers most of the Great Lakes and Midwest. Cities including Chicago, Indianapolis, Pittsburgh, Detroit, Boston and New York fall within a lighter shade of above-normal territory, reflecting somewhat less confidence than the deep red covering the Deep South. The lightest, most marginal above-normal shading stretches across the Upper Midwest, including Minneapolis, Appleton, Sioux Falls and Bismarck, where the outlook trends closer to average conditions than anywhere else on the map. Only the far northern tip of New England, near the Canadian Maritimes, shows equal chances or near-average conditions rather than any lean toward above-normal warmth.
Wetter Pattern Finally Returns Across the Carolinas and Southeast
The bigger story for the Carolinas may be the accompanying Precipitation Outlook, also valid September 21 through September 25, which shows above-normal precipitation favored across a broad green-shaded swath covering the entire Southeast, including North Carolina, South Carolina, Georgia, Tennessee and Florida. That same wetter-than-normal signal extends west through Texas, Louisiana and Mississippi, and stretches up the East Coast through Virginia, New York and Boston. Forecasters framed this as genuinely good news, noting the region badly needs the rain, calling it a small but real pattern change even if it comes without the dramatic temperature drop some might be hoping for.
Great Lakes and Ohio Valley Stay Near Normal While Upper Midwest Trends Drier
Not every part of the eastern U.S. shares in the wetter outlook. A broad gray, near-normal precipitation zone covers much of the Great Lakes and Ohio Valley, including Chicago, Indianapolis, Detroit, Pittsburgh and St. Louis, where neither above- nor below-normal rainfall is favored over the five-day period. Farther northwest, a tan, below-normal precipitation zone covers the Upper Midwest, including Minneapolis, Appleton, Sioux Falls and Bismarck, marking the one corner of the eastern outlook where drier conditions are actually favored rather than the wetter pattern benefiting the Southeast.
What This Means for Fall Lovers Waiting on Cooler Air
Taken together, the two outlooks paint a clear picture for the Carolinas and much of the eastern U.S. heading into the final days of September: continued above-normal warmth, with the deepest heat signal locked in across the Deep South and Gulf Coast, paired with a genuinely wetter pattern returning across the Southeast and up the East Coast. Forecasters acknowledged the setup will not satisfy anyone hoping for a true taste of fall, but framed the incoming rain as a welcome trade-off for a region that has been running dry, even as highs in the low 80s and lows in the low 60s remain the most realistic best-case scenario through September 25.
