National Weather Service United States Department of Commerce

Heat Persists in the South Central U.S. and California; Heavy Rain in the Ohio Valley

Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley, as well as in the Southwest and California this week with limited nighttime relief. Heavy rainfall will lead to localized areas of flash flooding in parts of the Ohio Valley/Central Appalachians. Dry and breezy conditions will enhance fire weather concerns across the northern Rockies and High Plains. Read More >

The heat and humidity gradually increase through the workweek, peaking on Friday. Heat index values will remain below Heat Advisory criteria (less than 105°F) through the weekend.
Shower and thunderstorm chances return ahead of a cold front Friday into Saturday, lingering into Sunday. Although rain will be beneficial, there could be a low-end flood threat for areas that receive multiple rounds of heavy rainfall.