St. Joseph, Missouri 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

297
FXUS63 KEAX 041114
AFDEAX

Area Forecast Discussion
National Weather Service Kansas City/Pleasant Hill MO
614 AM CDT Sat Apr 4 2026

.KEY MESSAGES...

- Frost and freeze conditions are expected tonight. Sensitive
  vegetation will need to be protected.

- Frost and freeze conditions will again be possible on Monday
  night into Tuesday morning.

- Snow showers are also possible Monday night into Tuesday
  morning. Light accumulations of less than half an inch may be
  possible across northern Missouri.

&&

.SHORT TERM /THROUGH MONDAY NIGHT/...
Issued at 219 AM CDT Sat Apr 4 2026

The cold front that brought showers and thunderstorms to the area
last night has slid east of the area. In it`s wake CAA has filtered
into the region under upper level troughing. This will provide a
cool day with highs in the 50s. Tonight, a surface ridge of high
pressure will begin to build into the area providing for clear skies
and light winds. This decent radiational cooling setup will allow
temperatures to drop into the upper 20s to mid 30s. A light freeze
will be likely for most of the forecast area north of the Missouri
River. The surface ridge of high pressure will build directly over
the forecast area on Sunday. This will provide sunny skies but weak
mixing which will hold highs in the upper 50s to lower 60s. Sunday
into Sunday night, a upper level trough will dig from the Canadian
Plains into the Great Lakes. This will force a backdoor cold front
through the area Sunday night into Monday. While this frontal
passage will be dry it will bring another shot of cooler
temperatures. Highs on Monday will only reach the upper 40s to lower
50s north to the low to mid 60s south where cooler air will advect
in later in the day. Monday night, temperatures will fall back into
the upper 20s to mid 30s with a freeze again possible for areas
north of the Missouri River. In addition, weak convergence along a
850mb front may provide the chance (30-60%) of snow showers on
Monday night with light accumulation less than half an inch not out
of the question for areas of northern Missouri.

&&

.LONG TERM /TUESDAY THROUGH FRIDAY/...
Issued at 219 AM CDT Sat Apr 4 2026

The extended time frame looks to have the potential to be active as
the area will reside under quasi-zonal flow aloft Tuesday through
Thursday. Several weak shortwave will provide the chance for showers
(20-40%) through the period with better chances across the northern
CWA near a stationary frontal boundary which may be the focus for
showers. Thursday night into Friday the upper level pattern chances
in response to a upper level trough that moves into the California
coast and digs into the southwestern CONUS. This will allow an
attendant cold front to develop over the Plains States by Friday.
Several lead shortwave ejecting out from the upper level trough over
the southwest CONUS will move into he region on southwesterly flow
aloft. This will provide shower and thunderstorm chances as we get
into Friday and Friday night. On saturday the upper level trough
ejects out into the eastern Rockies forcing the aforementioned cold
front into the area bringing the greatest chance for showers and
thunderstorms. Tuesday will be the coolest day through this period
with highs ranging from the upper 40s to lower 60s. However, by
Wednesday through Friday highs will generally range in the mid 60s
to mid 70s.

&&

.AVIATION /12Z TAFS THROUGH 12Z SUNDAY/...
Issued at 606 AM CDT Sat Apr 4 2026

Low MVFR and IFR will prevail thru 16Z-18Z before becmg VFR with
sct clouds btn 2-3kft and bkn clouds around 5kft. Aft 00Z-01Z...
just a few high clouds are fcst. Winds to begin the TAF pd will
be out of the NW at 10-15kts with gusts to 20-25kts and wind
incr to 15-20kts with gusts to 25-30kts aft 16Z-18Z. Winds will
subside by 00Z-01Z dmshg to 5-10kts while remaining out of the
NW.

&&

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

&&

$$

SHORT TERM...73
LONG TERM...73
AVIATION...73