National Weather Service United States Department of Commerce

Heavy Rain and Flash Flooding in the West; Heat Expands in the Central U.S.

Monsoonal moisture will produce showers and thunderstorms with heavy rain over parts of the Southwest, Great Basin, and Central Rockies through Monday. Flash flooding is possible, especially in and around burn scars and in areas of steep terrain. Heat will persist across the Central U.S. early this week, spreading into the Ohio Valley and Mid-Atlantic later this week. Read More >

Click a location below for detailed forecast.

Last Map Update: Mon, Aug 31, 2026 at 3:02:17 am EDT

 

A hot and humid week is expected with most places seeing heat index values near or above 100° by Wednesday. Rain chances do not return until late in the week.
Most areas will be dry for the next week or so. The best chance for any precipitation will be along the Smokies. Additionally, high pressure aloft will begin to strengthen over the region into this week, for a return of hot and muggy conditions. Heat indices will warm into the 100 to 105 range.
Most areas will be dry for the next week or so. The best chance for any precipitation will be along the Smokies. Additionally, high pressure aloft will begin to strengthen over the region into this week, for a return of hot and muggy conditions. Heat indices will warm into the 100 to 105 range.
Most areas will be dry for the next week or so. The best chance for any precipitation will be along the Smokies. Additionally, high pressure aloft will begin to strengthen over the region into this week, for a return of hot and muggy conditions. Heat indices will warm into the 100 to 105 range.

 Current Weather Observations...
Location Time
(EDT)
Weather Vsby.
(SM)
Temp.
(ºF)
Dewpt.
(ºF)
Hum.
(%)
Wind
(mph)
Wind Chill / Heat Index
(ºF)
Pres.
(in)
Abingdon VA02:35Clear10686693CALM-30.20
Andrews-Murphy NC02:15Mist2 1/2656495CALM-30.21
Chattanooga TN01:53Clear10777181CALM-30.12
Crossville TN01:53Clear10686796CALM-30.20
Dalton GA02:35Clear107272100CALM-30.13
Knoxville TN (McGhee-Tyson)01:53Clear10757187CALM-30.13
Middlesboro KY02:35Clear10676696CALM-30.17
Monroe Cnty TN02:15Clear86969100CALM-30.14
Morristown TN02:15Clear107171100CALM-
Oak Ridge TN01:53Clear10737193CALM-30.15
Tazewell Cnty VA02:35Clear10676696CALM-30.24
Tri-Cities TN01:53Partly Cloudy8686796CALM-30.18
Wise VA02:35Mist56464100SW 3-30.24
Greeneville, TN02:15Mostly Cloudy10716888CALM-30.16


Local Weather History For August 31st...
In 2016, Chattanooga had 77 days & Tri-Cities had 52 days of
temperatures above 90. Both sites broke records.

 

 

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