|
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: 2:21 pm CDT Sep 12, 2026 |
|
Tonight
 Partly Cloudy
|
Sunday
 Isolated T-storms
|
Sunday Night
 Isolated T-storms
|
Monday
 Decreasing Clouds
|
Monday Night
 Mostly Clear
|
Tuesday
 Hot
|
Tuesday Night
 Slight Chance T-storms
|
Wednesday
 Mostly Sunny
|
Wednesday Night
 Partly Cloudy then Slight Chance Showers
|
| Lo 71 °F |
Hi 87 °F |
Lo 65 °F |
Hi 87 °F |
Lo 72 °F |
Hi 97 °F |
Lo 74 °F |
Hi 96 °F |
Lo 75 °F |
|
Tonight
|
Partly cloudy, with a low around 71. Light northwest wind. |
Sunday
|
Isolated showers and thunderstorms. Partly sunny, with a high near 87. North wind 3 to 8 mph. Chance of precipitation is 20%. |
Sunday Night
|
Isolated showers and thunderstorms after 11pm. Mostly cloudy, with a low around 65. Northeast wind 6 to 8 mph. Chance of precipitation is 20%. |
Monday
|
Mostly cloudy, then gradually becoming sunny, with a high near 87. East wind 9 to 11 mph. |
Monday Night
|
Mostly clear, with a low around 72. Southeast wind around 11 mph. |
Tuesday
|
Sunny and hot, with a high near 97. |
Tuesday Night
|
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 74. |
Wednesday
|
Mostly sunny, with a high near 96. |
Wednesday Night
|
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 75. |
Thursday
|
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 91. Chance of precipitation is 30%. |
Thursday Night
|
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 69. |
Friday
|
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 88. |
Friday Night
|
A 20 percent chance of showers. Partly cloudy, with a low around 65. |
Saturday
|
A 30 percent chance of showers. Mostly sunny, with a high near 84. |
Forecast from NOAA-NWS
for 3 Miles NNW Black Jack MO.
|
Weather Forecast Discussion
517
FXUS63 KLSX 121927
AFDLSX
Area Forecast Discussion
National Weather Service St Louis MO
227 PM CDT Sat Sep 12 2026
.KEY MESSAGES...
- Above normal temperatures will continue for the next several
days with the hottest conditions forecast on Tuesday and
Wednesday.
- Chances (30-60%) of showers and thunderstorms each day will be
mainly confined to parts of northeast Missouri and west-
central Illinois near a stalled front.
&&
.SHORT TERM /THROUGH SUNDAY NIGHT/...
Issued at 219 PM CDT Sat Sep 12 2026
A weak cold front continues to move southeast, now located near
a KVIH>>K3LF line as of 1900 UTC. There has not been much, if
any, convective activity along this front due to strong capping.
This boundary will clear the southeastern CWA close to
midnight, with light northwest winds in its wake. Low-level
moisture convergence increases after midnight, mainly across
eastern Kansas. Widespread showers and thunderstorms are
expected on the nose of this jet, with activity moving
east/southeast with time. That means that most, if not all, of
these showers/storms should stay to our west/southwest. However,
parts of central Missouri may be on the far northeastern
periphery and this is where low (20-30+%) chances of showers and
perhaps a few thunderstorms exists late tonight into early
Sunday morning.
Forecast uncertainty increases heading into Sunday afternoon, with
deterministic models (including CAMs) showing a wide range of
solutions. There does look to be two separate areas of somewhat more
focused forcing: 1) northeast Missouri/west central Illinois where
weak low-level moisture convergence and low/mid level frontogenesis
resides and 2) far southern Missouri near the surface front and
downstream of a midlevel shortwave. Nothing looks too widespread (or
significant) in either zone, but this is where the highest (30-50%)
PoPs reside. Activity should wane Sunday evening with loss of
daytime heating, before the low-level jet kicks up again near the
Missouri-Kansas border. Similar to tonight, much (if not all) of
this activity Sunday night should stay to our west but may clip far
western and/or northern section of the CWA.
&&
.LONG TERM /MONDAY THROUGH SATURDAY/...
Issued at 219 PM CDT Sat Sep 12 2026
(Monday - Thursday Night)
The quasi-stationary front is expected to quickly lift north of the
area on Monday as cyclogenesis commences across the central Plains.
Very anomalous mid/upper level ridging is forecast to amplify across
the mid south early/mid week. In fact, 500-hPa heights of 594+ dm
would be record-breaking for this time of year. In addition, 850-hPa
temperatures climb back above +20C (>99th percentile). The latest
EPS Extreme Forecast Index (EFI) is also picking up on this heat,
showing EFI values of 0.8-0.9 for high temperatures Tuesday and
Wednesday, with even a slight Shift of Tails (SOT). This air mass
does seem capable of threatening record highs (upper 90s to around
100 degrees) Tuesday and Wednesday, though it will depend on cloud
cover and rain chances. Speaking of which, a cold front is likely to
stall out near or just north of our CWA on Tuesday. This front may
serve as the focus for showers and thunderstorms each day, with any
widespread activity creating debris clouds which ultimately could
impact temperatures over much of the area. Therefore, widespread mid
90s are not a given, though confidence does increase the farther
south you head within the region.
A likely scenario may be for each successive round of convection to
help help augment the boundary and help ooze it southward. This
points to a gradual "cool" down heading toward late week into next
weekend. Temperatures each day get more uncertain due to the high
variability in the location of the front, and the fact that clouds
and showers/storms near the boundary may enhance the temperature
gradient from north to south.
&&
.AVIATION /18Z TAFS THROUGH 00Z MONDAY/...
Issued at 1210 PM CDT Sat Sep 12 2026
A weak front is moving through the area, with west/southwest
winds veering to the north/northwest in its wake. Showers and
thunderstorms overnight tonight into Sunday morning are expected
to stay west/southwest of the central Missouri terminals.
&&
.LSX WATCHES/WARNINGS/ADVISORIES...
MO...None.
IL...None.
&&
$$
SHORT TERM...Gosselin
LONG TERM...Gosselin
AVIATION...Gosselin
View a Different U.S. Forecast Discussion Location
(In alphabetical order by state)
|
|
|
|