U.S. Alerts
El Dorado Weather Logo
U.S. Radar Loop Conditions Map

U.S. Color Topo IR Sat North America Color Background Satellite Thumb
Interactive Wx Map Live U.S. Google Map Radar Thumbnail Image

US Precipitation 1 day, 24 hour precipitation map

US Temperatures US Conditions Map

US Climate Data US Conditions Map

Old Jamestown, Missouri 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for 3 Miles NNW Black Jack MO
National Weather Service Forecast for: 3 Miles NNW Black Jack MO
Issued by: National Weather Service Saint Louis, MO
Updated: 5:11 am CDT Jul 23, 2026
 
Today

Today: Mostly sunny, with a high near 82. East wind around 6 mph.
Mostly Sunny

Tonight

Tonight: Mostly cloudy, with a low around 65. East wind 3 to 7 mph.
Mostly Cloudy

Friday

Friday: A 40 percent chance of showers, mainly after 1pm.  Mostly cloudy, with a high near 80. Southeast wind 3 to 6 mph.
Chance
Showers

Friday
Night
Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Mostly cloudy, with a low around 67. Southeast wind around 7 mph.  Chance of precipitation is 70%.
Chance
Showers then
Showers
Likely
Saturday

Saturday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm.  Partly sunny, with a high near 88. Southeast wind around 6 mph becoming west in the afternoon.  Chance of precipitation is 40%.
Chance
T-storms then
Chance
Showers
Saturday
Night
Saturday Night: Partly cloudy, with a low around 73.
Partly Cloudy

Sunday

Sunday: Sunny, with a high near 93.
Sunny

Sunday
Night
Sunday Night: Mostly clear, with a low around 76.
Mostly Clear

Monday

Monday: Mostly sunny and hot, with a high near 97.
Hot

Hi 82 °F Lo 65 °F Hi 80 °F Lo 67 °F Hi 88 °F Lo 73 °F Hi 93 °F Lo 76 °F Hi 97 °F

 

Today
 
Mostly sunny, with a high near 82. East wind around 6 mph.
Tonight
 
Mostly cloudy, with a low around 65. East wind 3 to 7 mph.
Friday
 
A 40 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 80. Southeast wind 3 to 6 mph.
Friday Night
 
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Southeast wind around 7 mph. Chance of precipitation is 70%.
Saturday
 
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Partly sunny, with a high near 88. Southeast wind around 6 mph becoming west in the afternoon. Chance of precipitation is 40%.
Saturday Night
 
Partly cloudy, with a low around 73.
Sunday
 
Sunny, with a high near 93.
Sunday Night
 
Mostly clear, with a low around 76.
Monday
 
Mostly sunny and hot, with a high near 97.
Monday Night
 
Mostly clear, with a low around 77.
Tuesday
 
Mostly sunny, with a high near 94.
Tuesday Night
 
Partly cloudy, with a low around 75.
Wednesday
 
Mostly sunny, with a high near 90.

 

Forecast from NOAA-NWS for 3 Miles NNW Black Jack MO.

Weather Forecast Discussion
886
FXUS63 KLSX 231039
AFDLSX

Area Forecast Discussion
National Weather Service St Louis MO
539 AM CDT Thu Jul 23 2026

.KEY MESSAGES...

- Cooler temperatures will continue through tomorrow before the heat
  and humidity returns by late this weekend.

- There is a chance (40-70%) for showers and scattered
  thunderstorms from late tonight through Saturday with locally
  rainfall possible.

&&

.SHORT TERM /THROUGH FRIDAY/...
Issued at 259 AM CDT Thu Jul 23 2026

Another dry and relatively cool July day is expected as low level
easterly flow continues to advect dry air into the area.  Highs this
afternoon will range from the upper 70s over the eastern CWA to the
mid 80s over parts of central and southeast Missouri.

The chance for showers and scattered thunderstorms will return after
midnight tonight over our Missouri counties as there will be
convergence on the nose of a broad low level jet.  This will spread
across the CWA on Friday and Friday night as there will be increased
lift associated with a shortwave trough moving southeast across the
area in the northwest flow aloft.  There remains some timing
differences with how quickly the rain will move out of the area,
with some models dry on Saturday with others showing showers and
thunderstorms lingering through the day.  The LREF is showing PWATS
around 2" Friday into Saturday (>90th percentile) at the same time
that the RAP is showing warm cloud depths above 10k feet which
favors locally heavy rainfall.

The clouds and showers will help keep highs down in the 70s and 80s
again on Friday.  Low level warm air advection is expected to help
boost highs on Saturday back into the 80s.

&&

.LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...
Issued at 259 AM CDT Thu Jul 23 2026

The LREF is continuing to show a large ridge building over the
central CONUS over the weekend with northwest flow setting up over
Missouri and Illinois.  Less than 15-20% of NBM/LREF members are
producing any rain over the area from Saturday night through next
Thursday favoring mainly a dry forecast.  It does look to be hot and
humid as 850mb temperatures increase into the 22-26C range (>95th
percentile) supporting highs in the 90s.  The warmest day at this
point looks to be Monday as the NBM IQR at St. Louis is only 3
degrees with highs in the mid to upper 90s.  With dewpoints forecast
to be in the 60s and 70s, afternoon heat indexes on Sunday into
Tuesday will likely climb above 100 degrees in most areas with some
areas reaching above 105.   There is some indication as the pattern
continues to amplify by the middle of next week, a weak front will
move in from the east which will cause a slight drop in temperatures
providing some relief.

&&

.AVIATION /06Z TAFS THROUGH 12Z FRIDAY/...
Issued at 529 AM CDT Thu Jul 23 2026

Mainly dry and VFR conditions are expected this period. There
are low chances (<30%) for showers with VFR conditions moving
into UIN/COU/JEF between 06-12Z, with a better chance (>30%) for
these conditions moving into the St. Louis airports between
12-18Z. Have only added PROB30 only to STL after 12Z where I
have the most confidence in the timing. Otherwise winds will
continue to be east to northeast and light through the period.

&&

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

&&

$$

SHORT TERM...Britt
LONG TERM...Britt
AVIATION...Kimble
View a Different U.S. Forecast Discussion Location
(In alphabetical order by state)



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






Contact Us Contact Us Thumbnail | Mobile Mobile Phone Thumbnail
Private Policy | Terms & Conds | Consent Preferences | Cookie Policy
Never base any life decisions on weather information from this site or anywhere over the Internet.
Site is dedicated to our Lord & Savior Jesus Christ | Random Quotes of Jesus

Copyright © 2026 El Dorado Weather, Inc. | Site Designed By:  Webmaster Danny