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St. Matthews, Kentucky 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Saint Matthews KY
National Weather Service Forecast for: Saint Matthews KY
Issued by: National Weather Service Louisville, KY
Updated: 5:12 am EDT Jul 27, 2025
 
Today

Today: A 30 percent chance of showers and thunderstorms, mainly after 4pm.  Partly sunny, with a high near 93. Heat index values as high as 106. West wind 6 to 9 mph.
Mostly Sunny
then Chance
T-storms
Tonight

Tonight: Showers and thunderstorms likely, mainly before 8pm.  Mostly cloudy, with a low around 77. West wind around 6 mph becoming light and variable  in the evening.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
T-storms
Likely then
Partly Cloudy
Monday

Monday: A 40 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 93. Heat index values as high as 107. Calm wind becoming west around 6 mph in the afternoon.
Chance
T-storms
Monday
Night
Monday Night: Partly cloudy, with a low around 76. Northwest wind around 5 mph becoming calm  in the evening.
Partly Cloudy

Tuesday

Tuesday: Mostly sunny and hot, with a high near 96. Light north wind.
Hot

Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 76.
Partly Cloudy

Wednesday

Wednesday: A 30 percent chance of showers and thunderstorms after 2pm.  Sunny and hot, with a high near 96.
Sunny then
Chance
T-storms
Wednesday
Night
Wednesday Night: A 40 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 74.
Chance
T-storms
Thursday

Thursday: A 50 percent chance of showers and thunderstorms.  Partly sunny, with a high near 87.
Chance
T-storms
Hi 93 °F Lo 77 °F Hi 93 °F Lo 76 °F Hi 96 °F Lo 76 °F Hi 96 °F Lo 74 °F Hi 87 °F

Heat Advisory
Hazardous Weather Outlook
 

Today
 
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 93. Heat index values as high as 106. West wind 6 to 9 mph.
Tonight
 
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 77. West wind around 6 mph becoming light and variable in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
 
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. Heat index values as high as 107. Calm wind becoming west around 6 mph in the afternoon.
Monday Night
 
Partly cloudy, with a low around 76. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
 
Mostly sunny and hot, with a high near 96. Light north wind.
Tuesday Night
 
Partly cloudy, with a low around 76.
Wednesday
 
A 30 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 96.
Wednesday Night
 
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Thursday
 
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Thursday Night
 
A 20 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 67.
Friday
 
Mostly sunny, with a high near 84.
Friday Night
 
Partly cloudy, with a low around 65.
Saturday
 
Mostly sunny, with a high near 85.

 

Forecast from NOAA-NWS for Saint Matthews KY.

Weather Forecast Discussion
279
FXUS63 KLMK 271053
AFDLMK

Area Forecast Discussion
National Weather Service Louisville KY
653 AM EDT Sun Jul 27 2025

...Updated Aviation Discussion...

.KEY MESSAGES...

* Heat Advisory this afternoon through Sunday evening over all of
  southern Indiana and part of central Kentucky. Heat Advisory then
  covers all of southern Indian and central Kentucky Monday through
  Wednesday.

* Mainly dry conditions continue with isolated afternoon/evening
  convection possible.

* Heat and humidity continue into next week, but a cool down is
  expected after mid-week and into next weekend.

&&

.SHORT TERM /THROUGH TONIGHT/...
Issued at 400 AM EDT Sun Jul 27 2025

Today, an upper ridge remains over much of the central CONUS with
upper high pressure centered over the Southeast. At the surface,
high pressure sits over the northern Gulf. This will keep winds
mostly out of the southwest, slightly more westward than the last
couple of days. Precipitable water values continue to hover around
the 2" mark throughout the Lower Ohio Valley as moisture continues
to flow from the Gulf up into the Mississippi and Ohio Valleys.

Overall showers and thunderstorms will remain isolated to scattered
this afternoon and evening. An area of frontogenesis is expected to
stretch from the Ozarks northeast through south-central Indiana.
This will be the focus of today`s activity. Precipitation will
likely work it`s way south through Illinois and Indiana closer to
the Interstate 64 corridor. Some isolated activity could happen
farther south, but best chances are on the north side of the CWA.
Instability will be relatively limited overall, and with shear
remaining weak, the threat is limited. Heavy rain and lightning are
the main expected impacts from any convection.

Tonight, precipitation chances will decrease with the loss of
diurnal heating, but after midnight into the predawn hours, some
activity is possible over southeast Indiana into the Bluegrass.

&&

.LONG TERM /MONDAY THROUGH SATURDAY/...
Issued at 400 AM EDT Sun Jul 27 2025

By Monday, the center of the upper high is expected to move close to
Arkansas with high pressure stretching from the Rockies east off the
Atlantic Coast and north into the Midwest. This will push the upper
ridge farther north over much of the country, excluding the Pacific
States and Northeast, resulting in warmer temperatures and higher
dew points early next week. Isolated to scattered summer type
convection chances continue through Tuesday, but overall most people
will see mostly dry days. The heat will continue with highs in the
90s and dew points in the 70s through the middle of next week.

The Heat Advisory continues unchanged through today but gets
expanded to cover the whole CWA beginning Monday as heat index
values begin increasing closer to 105 into the middle of next week.

As the upper high continues its westward shift, upper ridging will
move west with it, allowing an upper trough to drop south through
the Great Lakes region. This will help to push a cold front south
through the Lower Ohio Valley, bringing increased chances for
precipitation and relief in the form of highs in the 80s by the end
of the week. Dew points could return to the 50s to low 60s by
Saturday.

&&

.AVIATION /12Z TAFS THROUGH 18Z MONDAY/...
Issued at 653 AM EDT Sun Jul 27 2025

The forecast remains on track. VFR conditions are expected through
the forecast period. Some upper level cloud debris is currently
moving southeast over Illinois and southern Indiana from ongoing
showers over central Illinois. Scattered cu is expected to develop
as diurnal warming gets underway. Isolated to scattered showers and
thunderstorms are expected this afternoon with wider coverage
expected across southern Indiana and northern Kentucky.

&&

.LMK WATCHES/WARNINGS/ADVISORIES...
KY...Heat Advisory until 8 PM EDT /7 PM CDT/ Wednesday for
     KYZ023>040-045>047-053-054-061>065-070>076.
     Heat Advisory from noon EDT /11 AM CDT/ Monday to 8 PM EDT /7
    PM CDT/ Wednesday for KYZ041>043-048-049-055>057-066-067-
     077-078-081-082.
IN...Heat Advisory until 8 PM EDT /7 PM CDT/ Wednesday for
     INZ076>079-083-084-089>092.

&&

$$

SHORT TERM...KDW
LONG TERM...KDW
AVIATION...KDW
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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