Heat and approaching storms threaten the U.S. before a cooler weekend arrives.

In the Pittsburgh area, much of Wednesday should remain dry until showers and storms begin developing northwest of the city in the evening and spread through the region after dark; rain may continue intermittently through much of Thursday.
The central Pennsylvania forecast describes the cold front as relatively weak, with most backyards expected to receive less than half an inch of rain Thursday, followed by possible isolated showers or thunderstorms Thursday afternoon and evening.
South-central Pennsylvania is expected to see humidity ease Friday under partly to mostly sunny skies, with temperatures near 80 degrees; the weekend's better chance for showers and thunderstorms is expected Sunday afternoon rather than Saturday.
In South Bend and Michiana, Thursday and Friday are forecast to be notably more comfortable, with upper-70s Thursday and sunny conditions near 80 degrees Friday; the weekend is expected to be mostly quiet, with only a slight chance of a stray shower Saturday.
The South Bend forecast specifically advises people attending the Notre Dame–Rice football game at 3:30 p.m. ET Saturday to monitor conditions, although any stray shower is not expected to pose a major disruption; the broader outlook also calls for higher humidity and low-80s temperatures into the middle of next week in south-central Pennsylvania.
A warm, humid Wednesday will give way to showers and thunderstorms Wednesday night across the central and eastern United States, as a cold front brings locally heavy rain and isolated wind gusts. National Weather Service forecasters say widespread severe weather is not expected, but the Pittsburgh area could see more than an inch of rain overnight, creating potential flooding concerns. Temperatures will climb to the mid-80s to near 90 degrees Wednesday, reaching 99 degrees in Lubbock, Texas, before dropping into the 70s and low 80s behind the front Thursday and Friday.
The Pittsburgh area will remain dry through Wednesday afternoon before showers and storms develop northwest of the city in the evening and spread through the region after dark. WPXI reports that high temperatures will reach the mid-90s with humidity making it feel even hotter. Rain may continue intermittently through much of Thursday, with more than an inch of accumulation possible overnight, raising flooding concerns in areas with poor drainage.
Central Pennsylvania will see a relatively weak cold front Thursday, with most areas receiving less than half an inch of rain followed by possible isolated showers Thursday afternoon and evening. CBS News notes Thursday's showers and thunderstorms will mark the next big change in the Philadelphia region, bringing warmer and more humid conditions beforehand. Humidity will ease Friday under partly to mostly sunny skies, with temperatures near 80 degrees and a better chance for showers and thunderstorms returning Sunday afternoon rather than Saturday.
South Bend and the Michiana region will experience notably more comfortable weather Thursday and Friday, with upper-70s temperatures Thursday and sunny conditions near 80 degrees Friday. The broader outlook calls for higher humidity and low-80s temperatures into the middle of next week. Forecasters advise people attending the Notre Dame–Rice football game at 3:30 p.m. ET Saturday to monitor conditions, although any stray shower is not expected to pose a major disruption. The weekend is expected to be mostly quiet, with only a slight chance of a stray shower Saturday.
Conditions are likely to alternate between short-lived discomfort and brief relief rather than shift into a new weather regime. East Texas faces several days of above-average heat with only isolated afternoon showers, while the Great Lakes and Northeast will see humidity increase before rain and cooler, less humid air arrives behind the cold front. Outdoor work, travel, and energy demand should be planned around both heat exposure and narrow rainfall windows as this pattern persists into the middle of next week.
Publishers
60
Articles
19
Reach
79