St. Joseph, Missouri 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

748
FXUS63 KEAX 291736
AFDEAX

Area Forecast Discussion
National Weather Service Kansas City/Pleasant Hill MO
1236 PM CDT Wed Apr 29 2026

.KEY MESSAGES...

- Slightly Cooler Next Few Days

- Light Rain Thursday

- Mild Weather Over the Weekend

&&

.DISCUSSION...
Issued at 347 AM CDT Wed Apr 29 2026

Surface high pressure continues to build and slowly move
southeastward heading into the morning hours of Wednesday. This will
keep skies mostly clear trough the morning. There is a mid and upper-
level closed low over south-central Canada with trough axis
extending into southern Iowa. Eventually this will push upper-level
cloud cover across the region today, but overall forcing would be
weak given the surface anticyclone moving through, leading to a dry
forecast for Wednesday. High temperatures today will generally be in
the 60s across the region.

High pressure will move east-southeast throughout the day on
Thursday. Mid-level northerly flow with the passing trough axis
north of the area will push a subtle cold front southward and
increase convergence throughout the day. This will introduce chances
for light rain shower activity Thursday afternoon and evening,
especially for western and northern Missouri. Rainfall amounts range
from just a few hundredths to just a couple of tenths of an inch. A
few CAMs depict a few hundred J/kg of MUCAPE may be present ahead of
the boundary, which could result in a few weak, non-severe rumbles
of thunder as this passes through.This line should pass through the
forecast area by midnight Thursday Night. Temperatures in the mid to
upper 30s Thursday night into Friday are possible, which may lead to
some frost for areas north of Hwy. 36.

Mid and upper-level closed-low system moves eastward starting
Friday, and will push another surface anticyclone into the forecast
area that will keep this weekend dry. Temperatures will remain in
the mid to upper 60s Friday and Saturday with weak northerly flow,
but should start to see WAA kick in on Sunday, boosting temperatures
into the 70s and will continue through the start of the work week.
Additional rain shower chances and storm activity will occur with a
few short-wave perturbations that will move across the area.

&&

.AVIATION /18Z TAFS THROUGH 18Z THURSDAY/...
Issued at 1234 PM CDT Wed Apr 29 2026

VFR conditions expected to prevail across the sites through the
period. Initially, around SCT030 decks will be seen across the
sites, but should gradually subside as drier air continues to
gradually filter in with the surface high. Otherwise, N/NW winds
to around 10 kts too gradually ease, going variable around or
after 00z and through the overnight. SW to W winds establish
late in the period as well as increasing mid-level cloud cover.

&&

.EAX WATCHES/WARNINGS/ADVISORIES...
MO...None.
KS...None.

&&

$$

DISCUSSION...Krull
AVIATION...Curtis