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Kirkwood, Missouri 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Kirkwood MO
National Weather Service Forecast for: Kirkwood MO
Issued by: National Weather Service Saint Louis, MO
Updated: 5:21 am CDT Jul 10, 2025
 
Today

Today: Mostly sunny, with a high near 93. Calm wind becoming south around 5 mph in the afternoon.
Mostly Sunny

Tonight

Tonight: Mostly clear, with a low around 74. South wind around 6 mph.
Mostly Clear

Friday

Friday: Sunny, with a high near 96. Heat index values as high as 104. South wind 3 to 6 mph.
Sunny

Friday
Night
Friday Night: A 30 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 74. South wind around 6 mph.
Chance
T-storms

Saturday

Saturday: A 50 percent chance of showers and thunderstorms, mainly after 1pm.  Partly sunny, with a high near 92. Southwest wind 6 to 8 mph.
Slight Chance
T-storms then
Chance
T-storms
Saturday
Night
Saturday Night: A 30 percent chance of showers and thunderstorms before 1am.  Mostly cloudy, with a low around 72.
Chance
T-storms

Sunday

Sunday: A 30 percent chance of showers and thunderstorms, mainly after 1pm.  Partly sunny, with a high near 89.
Chance
T-storms

Sunday
Night
Sunday Night: A 20 percent chance of showers and thunderstorms before 1am.  Mostly cloudy, with a low around 70.
Slight Chance
T-storms

Monday

Monday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 90.
Mostly Sunny
then Slight
Chance
T-storms
Hi 93 °F Lo 74 °F Hi 96 °F Lo 74 °F Hi 92 °F Lo 72 °F Hi 89 °F Lo 70 °F Hi 90 °F

Hazardous Weather Outlook
 

Today
 
Mostly sunny, with a high near 93. Calm wind becoming south around 5 mph in the afternoon.
Tonight
 
Mostly clear, with a low around 74. South wind around 6 mph.
Friday
 
Sunny, with a high near 96. Heat index values as high as 104. South wind 3 to 6 mph.
Friday Night
 
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. South wind around 6 mph.
Saturday
 
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 92. Southwest wind 6 to 8 mph.
Saturday Night
 
A 30 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 72.
Sunday
 
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 89.
Sunday Night
 
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 70.
Monday
 
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90.
Monday Night
 
A 20 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 71.
Tuesday
 
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 92.
Tuesday Night
 
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Wednesday
 
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 90.

 

Forecast from NOAA-NWS for Kirkwood MO.

Weather Forecast Discussion
577
FXUS63 KLSX 101035
AFDLSX

Area Forecast Discussion...Updated Aviation
National Weather Service Saint Louis MO
535 AM CDT Thu Jul 10 2025

.KEY MESSAGES...

- There are multiple chances for showers and thunderstorms through the
  middle of next week. A few severe thunderstorms are possible
  Friday afternoon and evening over northeast Missouri and west
  central Illinois.

- Friday will be the warmest day of the week as heat index values
  climb to around 100 degrees for most. The St. Louis metro area
  will see values closer to 105 degrees.


&&

.SHORT TERM...  (Through Late Friday Afternoon)
Issued at 342 AM CDT Thu Jul 10 2025

The sky was mainly clear across the area this morning, though there
were some high clouds beginning to filter in from the northwest
ahead of a large MCS over Nebraska and Iowa.  Winds were light
thanks to high pressure centered over Kentucky and Tennessee. The
latest surface observations are showing some fog over the southern
parts of Illinois and Missouri, but I do not expect as much fog as
yesterday morning considering the amount of mixing that we saw
during the afternoon.  The latest CAMS are showing that the most
active part of the QLCS over the middle Missouri Valley will
continue to move east and stay north of the CWA.  The outflow from
the QLCS will move into the northern part of the CWA today where the
RAP soundings are showing some uncapped soundings this afternoon.
The HREF is focusing isolated development over the northern and
eastern part of the CWA this afternoon, so that is where I have
maintained slight chance PoPS.

A better chance for showers and thunderstorms will occur on Friday
afternoon and Friday night when an upper trough will approach the
area from the west.  There will be several boundaries associated
with the trough including a warm front over Iowa and northern
Illinois and an attendant cold front that will be entering western
Missouri on Friday night.  Showers and thunderstorms may develop
over the northern CWA as soon as Friday afternoon associated with a
residual outflow boundary from convection that will move through
Iowa tonight.  Most of the CAMS keep thunderstorms out of the CWA
tomorrow afternoon except for the FV3 and ARW.  A better chance will
wait until tomorrow evening associated with the cold front when
MLCAPES of 2000-3000+ J/kg and deep layer shear of 20-30 kts will
support a few organized severe multicell storms across the northern
CWA per the latest SWODY2.  Large hail and damaging wind gusts will
be the primary threat from any severe thunderstorms.

Highs the next two days will be in the lower to mid 90s with Friday
slightly warmer.  Dewpoints will climb into the 70s on Friday
supporting heat indexes from the mid 90s to near 105 degrees.

Britt

&&

.LONG TERM...  (Friday Night through Wednesday)
Issued at 342 AM CDT Thu Jul 10 2025

The LREF is still supporting an active pattern over the weekend
through the middle of next week with several chances for showers and
thunderstorms as several upper troughs will move through Missouri
and Illinois.  The LREF members are still producing the best chance
of rain (40-60%) on Friday night and Saturday with a lingering
chance (30-50%) across the southern half of the CWA as a front gets
stalled across the CWA and a second trough moves across the Missouri
and Illinois.  Here again, it should be pointed out that while the
weekend will not be a washout, some locally heavy rainfall could be
possible as both the GFS/NAM have PWATS AOA 2" along the front.
Additional chances for thunderstorms will be possible by early-mid
next week as all of the global models are showing yet another trough
and attendant front moving across the Midwest.

Temperatures through the weekend into next week will be close to
July normals ranging from the mid 80s to around 90 degrees.
Confidence in temperatures remains fairly high as the NBM IQR is
only 4-6 degrees.

Britt

&&

.AVIATION...  (For the 12z TAFs through 12z Friday Morning)
Issued at 530 AM CDT Thu Jul 10 2025

Mainly dry and VFR conditions are expected through the period. The
only exception will be a chance of thunderstorms (PROB30) during
the afternoon at UIN which could bring MVFR/low VFR ceilings and
visibilites. Otherwise, winds will remain light outside of
thunderstorms.

Britt

&&

.LSX WATCHES/WARNINGS/ADVISORIES...
MO...None.
IL...None.
&&

$$

WFO LSX
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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