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Madison, Alabama 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Madison AL
National Weather Service Forecast for: Madison AL
Issued by: National Weather Service Huntsville, AL
Updated: 1:50 am CDT Jul 28, 2025
 
Overnight

Overnight: Mostly clear, with a low around 75. Calm wind.
Mostly Clear

Monday

Monday: A 40 percent chance of showers and thunderstorms, mainly after 4pm.  Mostly sunny, with a high near 93. Heat index values as high as 107. Calm wind becoming west northwest around 5 mph in the morning.
Chance
T-storms

Monday
Night
Monday Night: A 30 percent chance of showers and thunderstorms before 7pm.  Partly cloudy, with a low around 75. West northwest wind around 5 mph becoming calm  in the evening.
Chance
T-storms then
Mostly Clear
Tuesday

Tuesday: A 40 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 95. Heat index values as high as 110. Calm wind becoming north around 5 mph in the afternoon.
Sunny then
Chance
T-storms
Tuesday
Night
Tuesday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 76. North wind around 5 mph becoming calm  in the evening.
Slight Chance
T-storms

Wednesday

Wednesday: A chance of showers, then showers and thunderstorms likely after 10am.  Mostly sunny, with a high near 94. Chance of precipitation is 70%.
Chance
T-storms then
T-storms
Likely
Wednesday
Night
Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly before 1am.  Mostly cloudy, with a low around 74.
Chance
T-storms then
Chance
Showers
Thursday

Thursday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm.  High near 91. Chance of precipitation is 80%.
Chance
Showers then
T-storms
Thursday
Night
Thursday Night: A 40 percent chance of showers and thunderstorms before 1am.  Mostly cloudy, with a low around 73.
Chance
T-storms

Lo 75 °F Hi 93 °F Lo 75 °F Hi 95 °F Lo 76 °F Hi 94 °F Lo 74 °F Hi 91 °F Lo 73 °F

Heat Advisory
 

Overnight
 
Mostly clear, with a low around 75. Calm wind.
Monday
 
A 40 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 93. Heat index values as high as 107. Calm wind becoming west northwest around 5 mph in the morning.
Monday Night
 
A 30 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 75. West northwest wind around 5 mph becoming calm in the evening.
Tuesday
 
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 95. Heat index values as high as 110. Calm wind becoming north around 5 mph in the afternoon.
Tuesday Night
 
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 76. North wind around 5 mph becoming calm in the evening.
Wednesday
 
A chance of showers, then showers and thunderstorms likely after 10am. Mostly sunny, with a high near 94. Chance of precipitation is 70%.
Wednesday Night
 
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 74.
Thursday
 
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 91. Chance of precipitation is 80%.
Thursday Night
 
A 40 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 73.
Friday
 
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 88. Chance of precipitation is 70%.
Friday Night
 
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Saturday
 
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.
Saturday Night
 
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69.
Sunday
 
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83.

 

Forecast from NOAA-NWS for Madison AL.

Weather Forecast Discussion
885
FXUS64 KHUN 280442
AFDHUN

Area Forecast Discussion
National Weather Service Huntsville AL
1142 PM CDT Sun Jul 27 2025

...New AVIATION...

.NEAR TERM...
(Rest of tonight and Monday)
Issued at 926 PM CDT Sun Jul 27 2025

A few light showers have formed this evening and should weaken as
they track slowly east. A larger complex of storms can be seen
tracking southeast around Smithville and Sparta, TN, and are not
expected to have much if any impact on the local area overnight.
Low temps will fall into the low to mid 70s providing very little
relief in a long stretch of brutal heat that will worsen over the
short term period. While mostly clear skies and light winds will
be supportive of patchy fog development, drier air and the lack of
more widespread rainfall over the past few days should keep fog
minimal and confined mostly to river valley areas.

The first of three brutally hot days will begin tomorrow as upper
ridging/high pressure retrogrades to the west and a shift in low
level flow brings better moisture to the Tennessee Valley. High
temps in the low to mid 90s combined with dewpoints in the mid to
upper 70s will yield afternoon heat indices in the 100-109 degree
range, potentially even breaking the 110 degree mark. A Heat
Advisory remains in effect for all of north Alabama and southern
middle TN through Tuesday evening. Please remember to practice
heat safety and never leave people or pets behind in cars. Stay
hydrated, wear lightweight clothing, and take frequent breaks in
the shade if spending time outdoors.

Low to medium chances for thunderstorms will also exist Monday
afternoon and evening. While severe storms are not anticipated,
some storms may be strong enough to produce gusty winds, frequent
lightning, and heavy downpours. Be sure to keep an eye to the sky
if spending time outdoors and head inside quickly if lightning
approaches!

&&

.SHORT TERM...
(Monday night through Wednesday night)
Issued at 926 PM CDT Sun Jul 27 2025

Overnight temps will range from the mid to upper 70s through the
short term period, providing very little relief to the brutal heat
and humidity felt during the day. Tuesday looks to be the hottest
day of the year so far as temps reach the upper 90s across a
larger portion of the area. Dewpoints will remain in the mid to
upper 70s which will bring heat indices in the 105-110 degree
range or higher. An Excessive Heat Warning may be needed in
future forecast updates for Tuesday, but an upward trend in
thunderstorm chances Tuesday and Wednesday afternoons has lowered
the confidence that the coverage of 110+ degree heat indices will
be great enough to warrant a Warning at this time. Regardless,
this heat will be very dangerous to those without proper hydration
or adequate cooling. The increase in electrical demands from
cooling systems may also lead to power interruptions and could
cause living spaces to become life-threatening without air
conditioning during the afternoon/evening. It is always a best
practice to have a backup location to seek air conditioning, such
as community cooling centers. Don`t forget to provide adequate
cooling and water for outdoor pets or livestock if they cannot be
brought indoors.

In addition to the dangerous heat, strong instability produced by
daytime heating and surface dewpoint values in the mid/upper 70s
will bring CAPE values into the 1500-3000 J/kg range Tuesday and
Wednesday afternoons. Low to medium chances (30-40%) for rain and
thunderstorms on Tuesday will increase to 60-70% Wednesday
afternoon as vorticity advection tied to an upper wave increases.
The stronger storms will be capable of producing strong microburst
winds each afternoon supported by DCAPE values near or above 1000
J/kg in model soundings. PWAT values between 2-2.3" could result
in locally heavy rainfall to perhaps minor flooding, especially
in areas that receive consecutive heavy downpours.

Lastly, fog development will need to be monitored each night
especially across areas that receive heavy rainfall. The next few
days certainly seem active with both heat and storms, so be sure
to stay tuned to the forecast for updates and follow heat and
thunderstorm safety guides to keep you and your family safe.

&&

.LONG TERM...
(Thursday through Sunday)
Issued at 926 PM CDT Sun Jul 27 2025

The long term forecast will offer a much appreciated pattern switch
bringing much cooler and wetter conditions to the TN Valley. By
Thursday, high pressure will have exited the TN Valley with mid level
troughing setting up just to our north. Despite the change in the
overall synoptic pattern, delayed changes at the surface level will
amount to one more day of hot and humid conditions on Thursday.
Current temps are forecast in the low 90s with heat indices nearing
advisory criteria in several locations. Even so we have low
confidence in seeing a heat advisory on Thursday as the absence of
subsidence from high pressure will allow for increased coverage of
showers and storms Thursday afternoon, potentially limiting afternoon
highs.

As we move into the weekend, troughing will continue to build in the
mid levels with a corresponding cold front at the surface slowly
moving its was across the eastern CONUS. Locally this looks to
significantly decrease our temperatures and inversely increase our
rain chances. As the cold front nears, highs look to drop from the
high 80s on Friday to the low 80s by Sunday. There is some spread in
model guidance on the exact temperatures as coverage of rain and
storms each afternoon will ultimately decide the high temps however,
the overall trend of cooler temps is well represented in long range
models. As far as our rain and storm chances, the proximity of the
frontal boundary will support prolonged low to medium rain chances
from Thursday into Sunday. Chances will peak each afternoon with the
support of diurnal heating. A widespread severe threat is not
expected, rather a few storms may have the potential to take
advantage of the few hundred J/KG of CAPE long range models indicate
and produce frequent lighting, heavy rainfall, and gusty winds.

&&

.AVIATION...
(06Z TAFS)
Issued at 1142 PM CDT Sun Jul 27 2025

VFR conditions are forecast through the TAF period. However, MVFR
conditions are possible Monday afternoon and have been added as a
PROB30 group due to lowered visibilities as a result of potential
showers. Otherwise, a low chance of patchy fog is possible tonight
but confidence remains too low for it to be included in the TAF at
this time. If fog affects the terminals, TAFs will be amended to
include lowered visibilities.

&&

.HUN WATCHES/WARNINGS/ADVISORIES...
AL...Heat Advisory until 9 PM CDT Tuesday for ALZ001>010-016.

TN...Heat Advisory until 9 PM CDT Tuesday for TNZ076-096-097.

&&

$$

NEAR TERM...25
SHORT TERM....25
LONG TERM....RAD
AVIATION...HC
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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