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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: 5:42 pm CDT Aug 2, 2026
 
Tonight

Tonight: Clear, with a low around 65. Calm wind.
Clear

Monday

Monday: Sunny, with a high near 88. Light southeast wind becoming south southeast 5 to 9 mph in the morning.
Sunny

Monday
Night
Monday Night: Clear, with a low around 67. Southeast wind 6 to 9 mph.
Clear

Tuesday

Tuesday: Mostly sunny, with a high near 90. Calm wind becoming south southeast around 5 mph in the afternoon.
Mostly Sunny

Tuesday
Night
Tuesday Night: A slight chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 69. East southeast wind 3 to 6 mph.  Chance of precipitation is 20%.
Partly Cloudy
then Slight
Chance
T-storms
Wednesday

Wednesday: A chance of showers and thunderstorms.  Partly sunny, with a high near 84. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms

Wednesday
Night
Wednesday Night: Showers and thunderstorms.  Low around 66. Chance of precipitation is 80%.
T-storms

Thursday

Thursday: Partly sunny, with a high near 84.
Partly Sunny

Thursday
Night
Thursday Night: A chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 67. Chance of precipitation is 40%.
Partly Cloudy
then Chance
T-storms
Lo 65 °F Hi 88 °F Lo 67 °F Hi 90 °F Lo 69 °F Hi 84 °F Lo 66 °F Hi 84 °F Lo 67 °F

Hazardous Weather Outlook
 

Tonight
 
Clear, with a low around 65. Calm wind.
Monday
 
Sunny, with a high near 88. Light southeast wind becoming south southeast 5 to 9 mph in the morning.
Monday Night
 
Clear, with a low around 67. Southeast wind 6 to 9 mph.
Tuesday
 
Mostly sunny, with a high near 90. Calm wind becoming south southeast around 5 mph in the afternoon.
Tuesday Night
 
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 69. East southeast wind 3 to 6 mph. Chance of precipitation is 20%.
Wednesday
 
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
 
Showers and thunderstorms. Low around 66. Chance of precipitation is 80%.
Thursday
 
Partly sunny, with a high near 84.
Thursday Night
 
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 67. Chance of precipitation is 40%.
Friday
 
Partly sunny, with a high near 88.
Friday Night
 
Partly cloudy, with a low around 71.
Saturday
 
Mostly sunny, with a high near 91.
Saturday Night
 
Partly cloudy, with a low around 73.
Sunday
 
Mostly sunny, with a high near 93.

 

Forecast from NOAA-NWS for Saint Joseph MO.

Weather Forecast Discussion
666
FXUS63 KEAX 022324
AFDEAX

Area Forecast Discussion
National Weather Service Kansas City/Pleasant Hill MO
624 PM CDT Sun Aug 2 2026

.KEY MESSAGES...

- Gradual Warm Up This Week, Gradual Increase in Humidity

- Storms Returns to the forecast Wednesday and Thursday...a few
  strong storms may be possible Wednesday night.

&&

.DISCUSSION...
Issued at 157 PM CDT Sun Aug 2 2026

Today, a surface ridge of high pressure is building into the CWA.
In addition, a upper level ridge is extending from the southwestern
CONUS northeastward into the northern Plains. This leaves the local
area on the eastern periphery of this feature but is providing
modest height rises. This coupled with the relaxation of yesterday`s
CAA will allow highs to rise into the mid 80s. Tomorrow, the surface
ridge will slide east of the area with weak WAA getting underway. As
it does the upper ridge residing west of the area today will slide
eastward and extend from the southwestern CONUS into the central
Plains and into the Upper Midwest. This will provide further height
rises across the area, and this, coupled with the weak WAA will
drive highs into the mid to upper 80s. Tomorrow night into Tuesday a
upper level trough will dig into the northern Plains. This will act
to flatten the upper level ridge and will force an attendant weak
cold front into the Upper Midwest and central Plains. Continued Weak
WAA ahead of this front on Tuesday will allow highs to warm into the
upper 80s to lower 90s.

Tuesday night into Wednesday the aforementioned cold front will sag
into the forecast area bringing shower and thunderstorm chances to
the northern CWA (40-75%). Showers are expected to diminish late
Wednesday morning into Wednesday afternoon but redevelopment is
forecast in the evening and is expected to continue thru the
overnight with most areas likely (50-80%) to receive precipitation.
A few strong storms may be possible with MUCAPE values between 1500-
2500J/Kg and effective sheer between 45-50kts. Highs Wednesday will
range from the upper 70 to lower 80s north where the cold front will
pass earlier in the day to the lower 90s south which will remain
ahead of the front. The latter portion of the forecast period
Thursday through Saturday will feature quasi-zonal flow aloft with
weak shortwaves moving through the region making occasional
scattered convection possible through that stretch. A gradual
warming trend is expected through that period as well with highs
Thursday in the 80s before rising to the upper 80s to lower 90s by
Saturday.


&&

.AVIATION /00Z TAFS THROUGH 00Z TUESDAY/...
Issued at 622 PM CDT Sun Aug 2 2026

VFR conditions and light winds are expected through the forecast
as high pressure moves across the area. Tomorrow, that high will
be east of the area and we`ll see winds becoming southeasterly
to southerly, but remain below 10kts.

&&

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

&&

$$

DISCUSSION...73
AVIATION...CDB
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Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






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