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St. Joseph, Missouri 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
NWS Forecast for Saint Joseph MO
National Weather Service Forecast for: Saint Joseph MO
Issued by: National Weather Service Kansas City/Pleasant Hill, MO
Updated: 3:30 pm CDT Apr 26, 2026
 
This
Afternoon
This Afternoon: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm.  Mostly cloudy, with a high near 76. Southeast wind around 14 mph, with gusts as high as 20 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely
Tonight

Tonight: Showers and thunderstorms before 2am, then showers and possibly a thunderstorm between 2am and 4am, then showers and thunderstorms after 4am.  Low around 61. Southeast wind 11 to 14 mph, with gusts as high as 25 mph.  Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
T-storms
Monday

Monday: Showers and thunderstorms likely before 7am, then showers likely and possibly a thunderstorm between 7am and 9am, then a chance of showers and thunderstorms after 9am.  Cloudy, then gradually becoming mostly sunny, with a high near 77. Southeast wind 13 to 17 mph becoming west northwest in the afternoon. Winds could gust as high as 31 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
T-storms
Likely
Monday
Night
Monday Night: Partly cloudy, with a low around 43. West northwest wind 8 to 16 mph, with gusts as high as 25 mph.
Partly Cloudy
Tuesday

Tuesday: Partly sunny, with a high near 64. North wind 6 to 9 mph.
Partly Sunny
Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 41.
Partly Cloudy
Wednesday

Wednesday: Mostly sunny, with a high near 65.
Mostly Sunny
Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 42.
Partly Cloudy
Thursday

Thursday: Partly sunny, with a high near 69.
Partly Sunny
Hi 76 °F Lo 61 °F Hi 77 °F Lo 43 °F Hi 64 °F Lo 41 °F Hi 65 °F Lo 42 °F Hi 69 °F

Flood Watch
Hazardous Weather Outlook
Severe Thunderstorm Watch
 

This Afternoon
 
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Mostly cloudy, with a high near 76. Southeast wind around 14 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
 
Showers and thunderstorms before 2am, then showers and possibly a thunderstorm between 2am and 4am, then showers and thunderstorms after 4am. Low around 61. Southeast wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
 
Showers and thunderstorms likely before 7am, then showers likely and possibly a thunderstorm between 7am and 9am, then a chance of showers and thunderstorms after 9am. Cloudy, then gradually becoming mostly sunny, with a high near 77. Southeast wind 13 to 17 mph becoming west northwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
 
Partly cloudy, with a low around 43. West northwest wind 8 to 16 mph, with gusts as high as 25 mph.
Tuesday
 
Partly sunny, with a high near 64. North wind 6 to 9 mph.
Tuesday Night
 
Partly cloudy, with a low around 41.
Wednesday
 
Mostly sunny, with a high near 65.
Wednesday Night
 
Partly cloudy, with a low around 42.
Thursday
 
Partly sunny, with a high near 69.
Thursday Night
 
Mostly cloudy, with a low around 45.
Friday
 
Mostly sunny, with a high near 68.
Friday Night
 
Partly cloudy, with a low around 43.
Saturday
 
Mostly sunny, with a high near 72.
Saturday Night
 
Partly cloudy, with a low around 46.
Sunday
 
Sunny, with a high near 77.

 

Forecast from NOAA-NWS for Saint Joseph MO.

Weather Forecast Discussion
457
FXUS63 KEAX 261912
AFDEAX

Area Forecast Discussion
National Weather Service Kansas City/Pleasant Hill MO
212 PM CDT Sun Apr 26 2026

.KEY MESSAGES...

- Rounds of showers and thunderstorms are expected tonight into
  tommorrow. Severe weather in the form of damaging straight
  line winds, large hail, and possibly a brief tornado or two
  can be expected tonight. The multiple round of rain could also
  lead to flash and river flooding.

- Drier and cooler conditions are expected Tuesday into the
  weekend.

&&

.DISCUSSION...
Issued at 211 PM CDT Sun Apr 26 2026

Cluster of storms that developed near Hays KS this morning has
continued to evolve into a bow echo racing across eastern KS.  Meso-
analysis from SPC suggests storms are building into increasingly
unstable environment with 1500-2000 J/kg of surface based CAPE with
~40 knots of 0-6 km bulk shear. As mid level winds increase through
the late afternoon hours, expect bulk shear to increase closer to 50
knots.  With storms becoming increasingly surface based as they
build into the area, expect increased wind threat. Warn on forecast
has increased the 1"+ hail threat across Linn KS ~21Z this afternoon
with southern end of the line, and a more widespread wind threat
increasing after 21Z ahead of the line.  Precipitable water is
running  in the neighborhood of 1.3", well above the 90th percentile
for this time of year.

After the initial line pushes east across the area, could see
additional development behind the line as additional mid level short
waves build east and 30-40 knot low level jet develops.  Inflow into
the region could be shifted a bit by potential outflow from initial
line of storms. HRRR has hinted at this potential over the last few
hours, leading to additional development and training of storms
along the I-70 to highway 50 corridors. Given this potential and
antecedent wet conditions, have expanded the flood watch to include
much of the forecast area tonight. Additional storms tonight could
be strong given the steep lapse rates from 800-700 mb (potentially
exceeding 8 degrees C/km) in combination strongly sheared
environment. Upper level divergence increases after 06Z tonight and
continues Monday morning as left exit region of upper level jet
noses into the area.  Overall, you can see trends in the models of
multiple rounds of storms overnight, but specific timing is
difficult to ascertain at this point.

Strongly sheared and unstable environment continues tomorrow morning
as warm front races north across the area.  As such, could see a
brief recovery in temperatures through the morning hours with
surface temperatures climbing into the 70s, but enviroment doesn`t
appear to be all that strongly capped so could be looking at
potential for additional storms until cold front shifts through the
region in the late morning/early afternoon hours.

Cooler and drier conditions are expected much of the remainder of
the week, which are well needed.


&&

.AVIATION /12Z TAFS THROUGH 12Z MONDAY/...
Issued at 633 AM CDT Sun Apr 26 2026

Isolated to scattered showers/storms possible this afternoon,
and fluctuating ceilings between low-end VFR and MVFR expected
as low pressure strengthens. Strong storms are expected to
develop in central Kansas later this afternoon, and eventually
congeal into a cluster of storms. These are likely to arrive
around the KS-MO state line between 00-03z. Additional
development is possible behind this. Ceilings will be low-end
MVFR, with down pours potentially resulting in periods of IFR
visibility.

&&

.EAX WATCHES/WARNINGS/ADVISORIES...
MO...Flood Watch from 7 PM CDT this evening through Monday evening
     for MOZ001>008-011>017-020>025-028>033-037>040-043>046.
KS...Flood Watch from 7 PM CDT this evening through Monday evening
     for KSZ025-057-102>105.

&&

$$

DISCUSSION...BT
AVIATION...Krull
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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