National Weather Service United States Department of Commerce

Areas of Extreme Heat and Excessive Rainfall Potential

Dangerous and extreme heat will remain across portions of the central U.S. this week, persisting across the mid to lower Mississippi Valley, Gulf Coast, southern Plains and portions of Texas. A heat wave over the Southwest U.S. will peak this weekend. Heavy to excessive rainfall may produce flash flooding from the Delmarva Peninsula north into the Hudson Valley today and tonight. Read More >

The next several days will be more typical for late July with highs in the mid to upper 80s combined with dewpoints generally in the mid 60s to lower 70s. This will be a nice reprieve from the oppressive humidity levels we had over the past few days when dewpoints were in the lower 80s!
[11:30 AM 7/28/2026] After a couple days of extreme heat on July 26 and 27, here are maximum high temperatures and heat indices observed across the area. All major observation sites saw heat indices above 110 degrees!
[11:30 AM 7/28/2026] Accompanying the extreme heat was oppressive humidity levels with dew points hitting the low to mid-80s area-wide. Dubuque, Iowa also hit their record high dew point of 83 degrees on the afternoon of July 27!