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Kingsport, Tennessee 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for Kingsport TN
National Weather Service Forecast for:
Kingsport TN
Issued by: National Weather Service Morristown, TN |
| Updated: 4:26 am EDT Jun 28, 2025 |
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Today
Chance
Showers and
Patchy Fog
then T-storms
Likely
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Tonight
Showers
Likely then
Slight Chance
T-storms and
Patchy Fog
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Sunday
Slight Chance
T-storms and
Areas Fog
then T-storms
Likely
|
Sunday
Night
T-storms
Likely then
Chance
Showers and
Patchy Fog
|
Monday
Slight Chance
T-storms and
Patchy Fog
then T-storms
Likely
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Monday
Night
T-storms
Likely then
Showers
Likely and
Patchy Fog
|
Tuesday
Showers
Likely and
Patchy Fog
then T-storms
|
Tuesday
Night
T-storms then
Chance
T-storms
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Wednesday
Mostly Cloudy
then Slight
Chance
T-storms
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| Hi 89 °F |
Lo 69 °F |
Hi 91 °F |
Lo 70 °F |
Hi 91 °F |
Lo 70 °F |
Hi 84 °F |
Lo 68 °F |
Hi 89 °F |
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Hazardous Weather Outlook
Today
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Showers and thunderstorms likely, mainly between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 89. Calm wind. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Tonight
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Showers and thunderstorms likely, mainly before midnight. Patchy fog after 1am. Otherwise, partly cloudy, with a low around 69. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Sunday
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A slight chance of showers, then showers and thunderstorms likely after 11am. Areas of fog before 8am. Otherwise, mostly sunny and hot, with a high near 91. Heat index values as high as 97. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Sunday Night
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Showers and thunderstorms likely, mainly before 8pm. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 70. Calm wind. Chance of precipitation is 60%. |
Monday
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A slight chance of showers, then showers and thunderstorms likely after 11am. Patchy fog before 7am. Otherwise, mostly sunny and hot, with a high near 91. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 70%. |
Monday Night
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Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers and thunderstorms after 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 70. Southwest wind around 5 mph becoming calm. Chance of precipitation is 60%. |
Tuesday
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A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. Patchy fog before 8am. High near 84. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 90%. |
Tuesday Night
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Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 68. Chance of precipitation is 80%. |
Wednesday
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A 20 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. |
Wednesday Night
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A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 65. Chance of precipitation is 20%. |
Thursday
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A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 90. |
Thursday Night
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A 10 percent chance of showers and thunderstorms. Mostly clear, with a low around 66. |
Independence Day
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A 20 percent chance of showers and thunderstorms. Sunny and hot, with a high near 92. |
Forecast from NOAA-NWS
for Kingsport TN.
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Weather Forecast Discussion
649
FXUS64 KMRX 280445
AFDMRX
Area Forecast Discussion
National Weather Service Morristown TN
1245 AM EDT Sat Jun 28 2025
...New SHORT TERM, LONG TERM, AVIATION...
.SHORT TERM...
(Today and tonight)
Issued at 1206 AM EDT Sat Jun 28 2025
Key Messages:
1. Scattered showers and thunderstorms again this afternoon.
2. Relatively normal summer heat with some heat index values near
100F.
Discussion:
Today is expected to be somewhat of a copy of Friday`s forecast
with warm, humid conditions across the region. Temperatures remain
hot with heat index values near 100F, but we`ll remain below Heat
Advisory criteria. The weakness in the ridge remains with
numerous scattered showers and thunderstorms expected to develop
across the region during the afternoon. Convection will first
develop across the higher elevations and plateau between Noon and
2pm with increasing chances of showers and storms across the
valley after 2pm as outflow boundaries initiate new convection.
Primary convective mode will be pulse convection once again as
EBShear remains weak around 10 kt with afternoon MLCAPE in the
2000 to 2500 J/Kg range. PW values remain primarily between 1.7
and 1.9 inches which will result in heavy rain rates, but not
extreme, tropical-like rates. Flash flooding will be possible, but
mainly where there is convective training. Convection will begin
to diminish in coverage after sunset.
&&
.LONG TERM...
(Sunday through Saturday)
Issued at 1206 AM EDT Sat Jun 28 2025
Key Messages:
1. Numerous diurnal convection continues through Tuesday.
2. Cold front expected to bring drier air by mid to late week.
Discussion:
Diurnal convection will continue on Sunday with a pattern very
similar to Saturday with highest probability for thunderstorms
during the afternoon and evening hours.
An upper-level trough begins to amplify across the upper
Mississippi Valley and Great Lakes as a strong shortwave moves
across the northern CONUS. This will bring a surface frontal
boundary approaching our area by Monday and Tuesday. Moisture will
increase ahead of this trough as southwesterly flow becomes more
pronounced with LREF ensemble guidance showing PW values
increasing to around 1.9 to 2.0 inches by Monday afternoon through
Tuesday. The GFS and NAM also show areas of 2.0 to 2.2 inch PW
values on Monday and Tuesday. These very high PW values will lead
to the potential of very heavy rainfall rates of 3 to 4+ inch per
hour QPE which will enhance flooding concerns. Flooding issues
will likely be isolated, but with these types of rates, any areas
with drainage issues or ample impervious surfaces could flood
quickly.
There is still higher spread in the ensembles of if we get full
frontal passage on Tuesday/Tuesday night, so there is still some
low PoPs on Wednesday, especially for southeast Tennessee and
southwest North Carolina. However, the trend is for drier
conditions on Wednesday through Independence Day across the
region with more pleasant, slightly less humid conditions for this
time of year.
&&
.AVIATION...
(06Z TAFS)
Issued at 1206 AM EDT Sat Jun 28 2025
Areas of fog and low clouds are expected this morning with VCFG
across the region due to rainfall earlier tonight at all sites.
MVFR and tempo IFR conditions will be possible in spots early this
morning due to the fog and low bkn clouds. VFR conditions are
forecast to prevail by 15z with additional vcsh and Prob30 TSRA
during the afternoon hours. Prevailing winds are light and
variable.
&&
.PRELIMINARY POINT TEMPS/POPS...
Chattanooga Airport, TN 90 71 90 72 / 50 20 50 20
Knoxville McGhee Tyson Airport, TN 90 70 90 71 / 70 30 60 20
Oak Ridge, TN 89 70 90 71 / 60 20 60 20
Tri Cities Airport, TN 86 67 88 68 / 70 30 60 30
&&
.MRX WATCHES/WARNINGS/ADVISORIES...
NC...NONE.
TN...NONE.
VA...NONE.
&&
$$
SHORT TERM...JB
LONG TERM....JB
AVIATION...JB
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