WASHINGTON, D.C. — The central and eastern US are about to feel a lot cooler on Tuesday, September 22, compared to today, Sunday, September 20, according to a High Temperature Change forecast from Max Velocity. If you’re anywhere from Washington, D.C., to Nashville, this is the sharp pattern shift worth planning around as the new week begins.
Washington DC Faces the Most Dramatic Cooldown in the Country
If you’re in Washington, D.C., brace for the single sharpest temperature swing anywhere on the map: highs are forecast to plunge 23 degrees by Tuesday compared to today. That kind of drop stands out even on a map full of significant cooldowns, making the D.C. metrothe clear epicenter of this week’s pattern change heading into the new week.
New York City Sees a Sharp 9 Degree Drop
Just up the coast, New York City is forecast to cool by 9 degrees by Tuesday. If you’re anywhere across the New York metro, expect a real, noticeable shift away from today’s warmth, even if it doesn’t quite match the dramatic swing forecast farther south in D.C.
Nashville and Charlotte Also See Double-Digit Cooldowns
Across the South Central US, Nashville is forecast for a striking 13-degree drop by Tuesday, one of the sharpest cooldowns anywhere outside the immediate D.C. area. Charlotte follows with its own solid 6-degreedecrease. If you’re in either city, plan for Tuesday to feel meaningfully different from the weekend, with Nashville in particular seeing one of the more dramatic regional swings on this entire map.
Oklahoma City and Phoenix See Notable Cooling Too
Farther west, Oklahoma City is forecast to cool by 8 degrees by Tuesday, while Phoenixsees an even larger drop of 6 degrees. If you’re anywhere across the Southern Plainsor Desert Southwest, expect a genuine, welcome break from recent warmth as this cooler air pushes through by the middle of the week.
Kansas City, Chicago and Omaha See Modest but Real Drops
Across the Midwest, Kansas City is forecast for a 2-degree decrease, with Chicagomatching that same modest 3-degree drop and Omaha coming in similarly at 3 degreescooler. If you’re in any of these cities, Tuesday won’t feel dramatically different from today, but the trend is still pointed in the cooler direction as this broader pattern shift moves through the central US.
Dallas and Houston Stay Largely Unchanged
Not everyone is feeling much of a shift. Dallasis forecast for essentially no change, at just 1 degree warmer, while Houston sits nearly identical at 1 degree cooler. If you’re anywhere along the Gulf Coast or in North Texas, don’t expect Tuesday to bring the kind of relief headed toward D.C. or Nashville; your weather looks set to stay largely status quo through the new week.
Miami and Atlanta Actually Warm Up Slightly
A few Southeastern cities are trending in the opposite direction entirely. Miami is forecast to warm by 4 degrees, matching Atlanta’sown 4-degree increase. If you’re in either city, Tuesday should feel a touch warmer than today rather than cooler, standing in sharp contrast to the cooldown unfolding farther north along the East Coast.
Billings Sees a Stunning 17 Degree Warmup
While most of the eastern half of the country cools down, the Northern Rockies are heading in a dramatically different direction. Billings, Montana, is forecast for a stunning 17-degree warmup by Tuesday, by far the largest increase anywhere on the entire map. If you’re in Billings, get ready for a noticeably hotter Tuesday even as cities like Washington, D.C., and New York are diving into a sharp fall-like chill.
Denver, Salt Lake City and Boise Also Warm Up Significantly
Nearby, Denver is forecast to warm by 8 degrees, with Salt Lake City and Boise both climbing 7 degrees. This entire stretch of the Intermountain West is trending firmly warmer heading into Tuesday, part of the same pattern responsible for Billings’ dramatic spike, and standing in stark contrast to the cooling gripping most of the country east of the Mississippi.
Seattle and Las Vegas See Only Slight Cooling
Out on the West Coast, Seattle is forecast for just a 1-degree decrease, while Las Vegascools a bit more noticeably at 3 degrees. Los Angeles, meanwhile, warms slightly by 2 degrees. This mixed bag across the West Coast shows just how localized the warming trend really is, concentrated most intensely over the interior Rockies rather than reaching all the way to the Pacific.
What This Means for Your Tuesday Plans
Wherever you are, this map is worth a close look before finalizing plans for the start of the new week. If you’re in Washington, D.C., New York or Nashville, prepare for one of the more dramatic single-day cooldowns you’ll feel all season. If you’re along the Gulf Coast or in the Southeast, expect conditions to stay largely similar or even trend slightly warmer. And if you’re in Billings, Denver or elsewhere across the Intermountain West, don’t put away the summer gear just yet, since your Tuesday is trending sharply warmer, not cooler, than what you’re feeling today.
