Explore the varied weather patterns across the U.S. in September 2025. From rain in the North Rockies to the sunny skies of Southern California, find out what’s in store.

Welcome to the middle of September 2025, where the U.S. weather continues to offer surprises! This comprehensive look at weather from coast to coast covers regions experiencing everything from needed rainfalls in the Northern Rockies to unseasonable warmth in Tampa. With potential delays from morning rains in Minneapolis to Chicago and sunny days perfect for outdoor plans in LA, every region offers a unique climate challenge. Stay updated on weather trends and predictions with our detailed analysis.
A band of rain is making its way through the Northern Rockies, affecting areas around Billings, bringing much-needed moisture. Seattle enjoys a cloudy but dry morning, while just north of Dallas, a patch of rain teases the Central Plains, with dry conditions remaining over the city. Oklahoma City and Kansas City sit under dry skies, perfect for outdoor plans. Farther east, Minneapolis experiences spotty rain showers, extending towards Chicago, hinting at the potential for morning delays. On the East Coast, Washington, D.C. and New York City are seeing light rain showers, impacting morning commuters. San Francisco and Los Angeles enjoy sunny and warm weather, offering perfect outdoor conditions.
Today across the nation, notable high temperatures create a varied weather landscape. In the Southwest, Phoenix sizzles at a hot 103 degrees, while further north, Salt Lake City lingers at a cooler 78. Moving to the Midwest, Kansas City hits a warm 92, in contrast to the more moderate Chicago at 84 degrees. Over in the Southeast, temperatures climb in Atlanta, reaching 86, while Tampa is slightly higher at 91 degrees, showcasing the warm weather across the region.
Now for the low temperatures tomorrow morning across the U.S. The Midwest will see a chilly start, with Minneapolis dropping to 66 degrees and Chicago at 61. Down in the Southern Plains, Kansas City is forecasted to have a low of 68 degrees, while Oklahoma City starts at 69. In the Southeast, Atlanta will be mild at 65 degrees, and New York will feel warm with a low of 65 degrees as well.
Tomorrow’s high temperatures will reach impressive levels across the region as warm air continues to dominate. Dallas is expected to hit 95 degrees, while Houston closely follows with a high of 93 degrees, both indicating above-average trends for mid-September. In the Southeast, Atlanta will see a warm high of 85 degrees, and Tampa is set for 91 degrees, contributing to the overall unseasonably warm conditions. The Midwest will experience a warm-up as well, with Kansas City forecasted to reach 91 degrees, signaling a shift towards summer-like temperatures.
An active weather scenario unfolds over the next 48 hours with a cold front driving rain and storms eastward from the Midwest. Expect heavy rainfall from Minneapolis through Chicago, with the potential for localized flooding. The Southeast, including Atlanta and Tampa, faces scattered thunderstorms—some becoming severe with gusty winds and hail. Out West, Seattle remains mostly dry, while Southern California enjoys clear skies, creating a stark contrast across the nation.