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Somerset, Kentucky 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Somerset KY
National Weather Service Forecast for: Somerset KY
Issued by: National Weather Service Jackson, KY
Updated: 2:33 pm EDT Jul 8, 2026
 
Tonight

Tonight: Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 10pm, then a chance of showers and thunderstorms after 10pm.  Patchy fog after 2am.  Otherwise, increasing clouds, with a low around 68. Light southwest wind.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
T-storms
Likely then
Chance
Showers and
Patchy Fog
Thursday

Thursday: A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm.  Partly sunny, with a high near 84. West southwest wind 5 to 8 mph, with gusts as high as 15 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Showers
Likely
Thursday
Night
Thursday Night: A chance of showers, with thunderstorms also possible after 1am.  Partly cloudy, with a low around 70. Southwest wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 30%.
Chance
Showers

Friday

Friday: Showers and possibly a thunderstorm.  High near 84. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.  Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Showers then
T-storms

Friday
Night
Friday Night: Showers and possibly a thunderstorm.  Low around 69. Southwest wind 3 to 7 mph.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
T-storms then
Showers

Saturday

Saturday: Showers and possibly a thunderstorm.  High near 82. Chance of precipitation is 90%.
Showers then
T-storms

Saturday
Night
Saturday Night: Showers and thunderstorms likely before 2am, then a slight chance of showers.  Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
T-storms
Likely

Sunday

Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 8am.  Partly sunny, with a high near 83. Chance of precipitation is 50%.
Chance
Showers then
Chance
T-storms
Sunday
Night
Sunday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers.  Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Chance
T-storms

Lo 68 °F Hi 84 °F Lo 70 °F Hi 84 °F Lo 69 °F Hi 82 °F Lo 68 °F Hi 83 °F Lo 67 °F

Hazardous Weather Outlook
Flood Watch
 

Tonight
 
Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 10pm, then a chance of showers and thunderstorms after 10pm. Patchy fog after 2am. Otherwise, increasing clouds, with a low around 68. Light southwest wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
 
A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 84. West southwest wind 5 to 8 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
 
A chance of showers, with thunderstorms also possible after 1am. Partly cloudy, with a low around 70. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Friday
 
Showers and possibly a thunderstorm. High near 84. Southwest wind 6 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Friday Night
 
Showers and possibly a thunderstorm. Low around 69. Southwest wind 3 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
 
Showers and possibly a thunderstorm. High near 82. Chance of precipitation is 90%.
Saturday Night
 
Showers and thunderstorms likely before 2am, then a slight chance of showers. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Sunday
 
A slight chance of showers, then a chance of showers and thunderstorms after 8am. Partly sunny, with a high near 83. Chance of precipitation is 50%.
Sunday Night
 
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Monday
 
A chance of showers, with thunderstorms also possible after 8am. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Monday Night
 
A chance of thunderstorms. Mostly clear, with a low around 67. Chance of precipitation is 30%.
Tuesday
 
Sunny, with a high near 87.
Tuesday Night
 
Mostly clear, with a low around 68.
Wednesday
 
A 20 percent chance of showers and thunderstorms. Sunny, with a high near 87.

 

Forecast from NOAA-NWS for Somerset KY.

Weather Forecast Discussion
025
FXUS63 KJKL 081842
AFDJKL

AREA FORECAST DISCUSSION
National Weather Service Jackson KY
242 PM EDT Wed Jul 8 2026

.KEY MESSAGES...

- Warm and humid weather will persist through the week.

- There is a high chance of showers and thunderstorms into the
  weekend.

- Heavy rainfall is expected at times through the first half of
  this weekend, especially Friday, with a threat of isolated to
  scattered instances of flash flooding.

- A Flood Watch has been issued for increased flash flood
  potential across the area, and is in effect from Thursday
  afternoon through Saturday night.

&&

.SHORT TERM...(This evening through Thursday night)
Issued at 241 PM EDT WED JUL 8 2026

A mid-level closed low over the Lower OH/TN Valley will slowly fill
and become an open wave this evening into the overnight as it moves
up the Ohio River Valley. Westerly flow then builds in its wake
Thursday into Thursday night, with another wave and associated
convection approaching from the west and west-northwest Thursday
night into Friday morning.

Numerous convective showers and storms have already developed across
the northern half of the forecast area this afternoon. An overall
increasing trend in convective activity is likely as the afternoon
progresses in a moderately unstable environment with high PWs and
lower to mid 70s dewpoints. A bit stronger mid-level flow than
yesterday means storm motions are a bit more progressive than
yesterday, but the potential for training of heavy rain still
exists, particularly in areas where soils are already saturated from
recent previous heavy rainfall. Thus, an isolated flash flood
potential remains through Thursday morning.

Flash flood potential increases Thursday afternoon through Thursday
night, as another round of afternoon and evening convection is
expected on top of increasingly wet soils. Attention then turns to a
potentially significant round of heavy rain at the very end of the
period towards dawn Friday with the arrival of one or more mesoscale
convective systems. Thus, a Flash Flood Watch has been issued
starting at 18z Thursday afternoon, continuing into the first half
of the weekend.

With an active weather pattern and high humidity through the period,
expect continued mild/warm overnight lows in the mid 60s to lower
70s, with little if any ridge-valley temperature splits. Highs
Thursday will be tempered somewhat by cloud cover and redeveloping
shower and thunderstorm activity, with lower to mid 80s expected.


.LONG TERM...(Friday through Wednesday)
Issued at 238 PM EDT WED JUL 8 2026

At the onset of the extended, two shortwaves will be in close
proximity of one another, the first over southern Indiana and
Western Kentucky, the other being just west over the South
Dakota/Nebraska area. In addition to these two features, split flow
remains over Western CONUS, with a trough off the coast of British
Columbia, and a ridge of high pressure over Southern California.
Through Saturday, the two shortwaves phase into a more defined
positively tilted trough across the Ohio Valley, while high pressure
builds across the Plains.

For sensible weather across Eastern Kentucky, showers and
thunderstorm will be possible Friday through Monday, with a cold
front moving through the area during the day Sunday. While shower
and storms chances remain Monday, they will be more isolated to
scattered compared to the numerous showers and thunderstorms that
are expected Friday and Saturday. ECMWF Mean PWATs, continue to show
model output falling around the 90th percentile of climatological
normals from Friday through the Saturday with PWATs ranging from
1.90-2.10 inches. Showers and storms will have the potential for
torrential rainfall. If an area sees repeated rounds of these
storms, isolated instances of flash flooding could occur each of the
days listed above. The WPC continues to have the area in a Slight
Risk for excessive rainfall both Friday and Saturday, and a Marginal
Risk on Sunday.

By Monday, A strong 600-dm high is modeled over the Upper Midwest
and Central Plains, with the eastern portions of it infringing on
the area. Showers and storms will still be possible, with existing
scattered chances looking greatest across southern potions of the
CWA. A departing area of low pressure is expected to be along the
KY/TN border leading to theses lingering chances. The long
forgotten trough off the British Columbia coast back on Friday will
have navigated around the amplified ridge of high pressure into the
upper Great Lakes area by Tuesday morning. This will flatten the
high some, allowing for higher heights over Eastern Kentucky. While
this usually equates to much warmer temperatures, model 850-mb
temperatures remain suppressed.

Temperatures through the extended generally remain in the low to mid
80s through Monday, becoming mid to upper 80s Tuesday and
Wednesday. In the evenings temperatures generally cool into the
upper 60s.

&&

.AVIATION...(For the 18Z TAFS through 18Z Thursday afternoon)
ISSUED AT 128 PM EDT WED JUL 8 2026

A mix of conditions is expected this afternoon and evening with
scattered showers/ thunderstorms persisting through much of the
period. This once again results in localized IFR or worse
conditions likely lingering later into the evening than the past
couple of nights. Winds will be light and variable away from any
storm.

&&

.JKL WATCHES/WARNINGS/ADVISORIES...
Flood Watch from Thursday afternoon through Sunday morning for
KYZ044-050>052-058>060-068-069-079-080-083>088-104-106>120.

&&

$$

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






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