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Chattanooga, Tennessee 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for 3 Miles WSW Chattanooga TN
National Weather Service Forecast for:
3 Miles WSW Chattanooga TN
Issued by: National Weather Service Morristown, TN |
| Updated: 2:26 pm EDT Jun 7, 2026 |
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Tonight
Showers
Likely
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Monday
Showers
Likely then
Showers
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Monday
Night
Showers
Likely
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Tuesday
Showers
Likely
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Tuesday
Night
Chance
T-storms then
Chance
Showers
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Wednesday
Chance
T-storms then
T-storms
Likely
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Wednesday
Night
T-storms
Likely then
Partly Cloudy
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Thursday
Chance
T-storms
|
Thursday
Night
Chance
T-storms then
Mostly Clear
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| Lo 70 °F |
Hi 80 °F |
Lo 69 °F |
Hi 84 °F |
Lo 70 °F |
Hi 87 °F |
Lo 72 °F |
Hi 90 °F |
Lo 73 °F |
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Flood Watch
Hazardous Weather Outlook
Tonight
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Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and 2am, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 70. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. |
Monday
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Showers and thunderstorms likely, then showers and possibly a thunderstorm after 2pm. High near 80. Calm wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible. |
Monday Night
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Showers and thunderstorms likely, mainly before 2am. Mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. |
Tuesday
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A chance of showers and thunderstorms before 8am, then showers likely between 8am and 11am, then showers likely and possibly a thunderstorm after 11am. Partly sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 70%. |
Tuesday Night
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A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 30%. |
Wednesday
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A chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny, with a high near 87. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 60%. |
Wednesday Night
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Showers and thunderstorms likely before 8pm. Partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 60%. |
Thursday
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A 40 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny and hot, with a high near 90. |
Thursday Night
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A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 73. |
Friday
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A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny and hot, with a high near 91. Chance of precipitation is 60%. |
Friday Night
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Showers and thunderstorms likely. Partly cloudy, with a low around 73. Chance of precipitation is 60%. |
Saturday
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A 40 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 90. |
Saturday Night
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A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70. |
Sunday
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A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. |
Forecast from NOAA-NWS
for 3 Miles WSW Chattanooga TN.
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Weather Forecast Discussion
424
FXUS64 KMRX 071828
AFDMRX
Area Forecast Discussion
National Weather Service Morristown TN
228 PM EDT Sun Jun 7 2026
...New DISCUSSION...
.KEY MESSAGES...
Updated at 226 PM EDT Sun Jun 7 2026
- Chances for showers and thunderstorms are expected each day
through the coming work week especially in the afternoon/evening
hours.
- Very heavy rainfall rates and an increased risk for flash
flooding is expected Monday, especially over our TN and SW NC
counties
- The potential for very heavy rainfall which could lead to
localized flooding can be expected at times through the coming
week.
&&
.DISCUSSION...
Issued at 226 PM EDT Sun Jun 7 2026
Warm and sticky conditions are expected for the upcoming week into
the weekend, with chances for showers and storms each day.
The main concern will be the potential for localized heavy rainfall
and flooding over the coming week. Moisture is already surging in
the southern portion of our area, and a few showers/storms that are
moving in may contain very heavy rainfall and the threat of
localized flooding this afternoon into tonight mainly across our far
SW counties. The threat of flooding looks heightened on Monday as
weak short wave energy traverses the area. Models portray a very
moist airmass with PWAT values surging to around 2 inches across the
much of the area, which are near record values for early June in our
area. Flow is weak and storms are expected to move slowly, and the
expected modest CAPE looks to be of the tall skinny variety which
coupled with high freezing levels will favor very efficient warm
rain processes and the potential for very heavy rainfall rates. CAMS
are showing the potential for localized areas of very heavy
rainfall, and rainfall rates exceeding 2 inches per hour look
possible. Pinpointing the exact locations where very heavy rainfall
will occur is not possible at this time, although the risk looks
highest across the Plateau and our southern and central counties.
Will issue a flash flood watch for our TN and NC counties for Monday.
PWAT values are forecast to remain elevated for much of the coming
week as no strong drying is forecast anytime soon, although ensemble
data indicates values will be a bit lower than on Monday. Daily
showers and storms can be expected each day, especially during the
afternoon and evening in response to peak heating. There will
continue to be the potential for very heavy rainfall rates and
localized flooding, especially in areas that see repeated or
prolonged periods of heavy rain.
&&
.AVIATION...
(18Z TAFS)
Issued at 109 PM EDT Sun Jun 7 2026
Showers and thunderstorms will be mainly south early in the period
then diminish for a period overnight before increasing again and
spreading north at least as far as TYS. Expect mainly MVFR/IFR
conditions at CHA, with VFR/MVFR at TYS and mainly VFR at TRI.
Will try to time best chances for thunder with tempo and prob30
groups at CHA and TYS.
&&
.PRELIMINARY POINT TEMPS/POPS...
Chattanooga Airport, TN 70 80 68 84 / 70 90 60 70
Knoxville McGhee Tyson Airport, TN 70 80 68 84 / 30 80 50 80
Oak Ridge, TN 69 79 67 83 / 40 90 50 80
Tri Cities Airport, TN 66 86 67 84 / 0 60 50 70
&&
.MRX WATCHES/WARNINGS/ADVISORIES...
NC...Flood Watch from Monday morning through Monday evening for
Cherokee-Clay.
TN...Flood Watch from Monday morning through Monday evening for
Anderson-Bledsoe-Blount Smoky Mountains-Bradley-Campbell-
East Polk-Hamilton-Knox-Loudon-Marion-McMinn-Meigs-Morgan-
North Sevier-Northwest Blount-Northwest Monroe-Rhea-Roane-
Scott TN-Sequatchie-Sevier Smoky Mountains-Southeast Monroe-
Union-West Polk.
Flood Watch from Monday afternoon through Monday evening for
Claiborne-Cocke Smoky Mountains-Grainger-Hamblen-Hancock-
Hawkins-Jefferson-Johnson-Northwest Carter-Northwest Cocke-
Northwest Greene-Southeast Carter-Southeast Greene-Sullivan-
Unicoi-Washington TN.
VA...NONE.
&&
$$
DISCUSSION...99
AVIATION...99
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