Westward Shift
Sunday, August 30, 2026 · 6:56 PM
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Updated at six fifty-five P.M. Central Daylight Time, Sunday, August thirtieth, twenty twenty-six. Hot with highs in the mid to upper nineties west of the plateau this week. Major to extreme heat risk is expected by the middle of the week with heat index values in the triple digits. Very low rain chances through midweek. Upper ridge building! Dew points rising! Upper sixties! Lower seventies! Midweek pressure! Heat index one hundred five! Triple digits! Upper eighties! Mid nineties! Limited relief! Minimal rain! One hundred seven! Westward shift! Middle Tennessee! Upper ridge! Westward shift! Westward shift! Westward shift!
The forecast discussion
KEY MESSAGES
Updated at 655 PM CDT Sun Aug 30 2026
- Hot with highs in the mid to upper 90s west of the plateau this week.
- Major to extreme heat risk is expected by the middle of the week with heat index values in the triple digits.
- Very low rain chances through midweek.
SHORT TERM
(Rest of today through Monday) Issued at 1041 AM CDT Sun Aug 30 2026
High and dry is the theme of this forecast.
The western upper ridge influences continue to build into the area.
Highs this afternoon will be a couple of degrees warmer than yesterday.
Dew points are also a couple of degrees higher which will keep overnight low in the upper 60s to lower 70s tonight.
Monday looks very similar with highs in the upper 80s to mid 90s.
With the ridge building in, the area will remain dry.
LONG TERM
(Monday Night through next Sunday) Issued at 1041 AM CDT Sun Aug 30 2026
The ridge continues to build during the midweek period with afternoon heat indices creeping up to around 105 by Tuesday and continuing in the 100-107 range through Friday.
Relief overnight will be limited with lows in the low to mid 70s.
Rain chances will continue to be minimal through Wednesday.
The ridge will start to lose some strength on Thursday which may allow for a couple of isolated storms.
Models continue to indicate that the upper ridge will shift westward next weekend allowing for temperatures to fall back closer to normal for Middle Tennessee along with some isolated afternoon storms.