U.S. Alerts
El Dorado Weather Logo
U.S. Radar Loop Conditions Map

U.S. Color Satellite North America Color Infrared Animated Satellite Loop

Interactive Wx Map Live U.S. Google Map Radar Thumbnail Image

US Precipitation 1 day, 24 hour precipitation map

US Temperatures US Conditions Map

US Climate Data US Conditions Map

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: 3:36 pm CDT Sep 16, 2026
 
Tonight

Tonight: Patchy fog after 4am.  Otherwise, partly cloudy, with a low around 70. East wind around 5 mph becoming light and variable  after midnight.
Partly Cloudy
then Patchy
Fog

Thursday

Thursday: A slight chance of showers and thunderstorms before 10am.  Patchy fog before 10am.  Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 87. Heat index values as high as 98. Calm wind becoming north northeast around 5 mph in the afternoon.  Chance of precipitation is 20%.
Slight Chance
T-storms and
Patchy Fog
then Mostly
Sunny
Thursday
Night
Thursday Night: Partly cloudy, with a low around 70. East wind 3 to 6 mph.
Partly Cloudy


Friday

Friday: Sunny, with a high near 89. Heat index values as high as 99. South wind 6 to 11 mph.
Sunny


Friday
Night
Friday Night: A chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 72. South wind around 9 mph, with gusts as high as 20 mph.  Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Mostly Clear
then Chance
T-storms

Saturday

Saturday: A chance of showers and thunderstorms, mainly before 1pm.  Partly sunny, with a high near 87. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Chance
Showers
Saturday
Night
Saturday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Showers
Likely

Sunday

Sunday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm.  Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
Showers
Likely

Sunday
Night
Sunday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Showers
Likely

Lo 70 °F Hi 87 °F Lo 70 °F Hi 89 °F Lo 72 °F Hi 87 °F Lo 66 °F Hi 75 °F Lo 64 °F

Hazardous Weather Outlook
 

Tonight
 
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 70. East wind around 5 mph becoming light and variable after midnight.
Thursday
 
A slight chance of showers and thunderstorms before 10am. Patchy fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 87. Heat index values as high as 98. Calm wind becoming north northeast around 5 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
 
Partly cloudy, with a low around 70. East wind 3 to 6 mph.
Friday
 
Sunny, with a high near 89. Heat index values as high as 99. South wind 6 to 11 mph.
Friday Night
 
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. South wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
 
A chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 87. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
 
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Sunday
 
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
Sunday Night
 
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Monday
 
A chance of showers before 1pm. Mostly cloudy, with a high near 73. Chance of precipitation is 30%.
Monday Night
 
Partly cloudy, with a low around 60.
Tuesday
 
Partly sunny, with a high near 74.
Tuesday Night
 
Partly cloudy, with a low around 59.
Wednesday
 
A chance of showers. Partly sunny, with a high near 75. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Saint Joseph MO.

Weather Forecast Discussion
617
FXUS63 KEAX 162341
AFDEAX

Area Forecast Discussion
National Weather Service Kansas City/Pleasant Hill MO
641 PM CDT Wed Sep 16 2026

.KEY MESSAGES...

- Fog potential tonight into Thursday morning, mainly near and north
  of Highway 36

- Seasonally hot and humid conditions for areas around/south of Missouri
  River and I-70 through Friday. Including highs into the 90s
  and heat index values into the low 100s possible.

- Multiple rounds of showers and storms possible over the weekend.

- Cooler, more seasonable to seasonably cool temperatures begin
  to overspread the region later Sunday and into next week.
  Highs falling into the 70s.

&&

.SHORT TERM /THROUGH FRIDAY NIGHT/...
Issued at 317 PM CDT Wed Sep 16 2026

A tale of two regions for the forecast area today. Morning showers
and generic thunderstorm activity for much of the area near and
north of I-70 has largely subsided and given way to a northward
lifting warm front and clearing skies. As such, this yields starkly
different days from Northern Missouri to Central Missouri. Expect
highs underneath areas with lingering cloud cover to struggle to do
much more than the upper 70s to low 80s, while areas further south
will be dictated by just how much sunshine and mixing depth can be
achieved. Given the 850mb warm nose >20 deg C. Initial forecasts
suggested the ~90 deg F line to be around the east-west portions of
the Missouri River. Given recent trends and observations that is
more likely to be a tier of counties northward, regardless, cooler
north to warm to hot and humid as you work southward across the area
today.

Tonight, potential for additional showers and storms has tended to
trend northward among the short-term guidance suites. While the
surface front may not fully lift out of Missouri and into Iowa, it
should be enough to keep activity into Iowa. Storm chances into the
overnight will be driven predominantly by LLJ/isentropic ascent
overriding the surface/near-surface front. Even if some activity
clips the far northern portions of Missouri, the activity should be
on the more progressive side with a notable lack of above surface
boundary for storms to train along and migrating LLJ. Most recent
CAM runs result in initial convection around 06z near and east of
Des Moines along the I-80 corridor and drifting eastward through the
overnight. Did briefly consider lining up with DMX/DVN a new Flood
Watch for tonight, and while much of the area has seen
plentiful/saturating rainfall with confidence increasing in the
location, have opted against. Otherwise, potential for some fog in
the vicinity of the surface front and northward given moist low
levels and light to nil winds tonight and have added as much into
the forecast.

Thursday sees a surface high drop into the Northern Plains, which
will help retreat the surface boundary back southward. There is some
uncertainty in just how far south it will be able to retreat. The
850mb thermal ridge will remain overhead across the area, so the
importance of the surface boundary ties to cloud cover and mixing
depth potential. In general it will set up another day where
Northern Missouri will feel drastically different than areas near
and south of I-70. Northern areas could also see a few showers or
general thunder as weak isentropic lift continues as well, but in
similar fashion to today should weaken as the day progresses.
Concurrent, the large scale pattern begins to see a bit more change
as western CONUS mid-level cutoff low/trough begins to move more
inland and a shortwave disturbance lifts out of Sonora/Mexico.

The waffling surface boundary/warm front will see another northward
surge Friday as surface low develops and pushes off the Colorado
Front Range. By this point the Norther Plains surface high will have
pushed eastward and may keep shower/storm chances ongoing for NE
portions of the CWA. This will also again potentially yield a
dramatic difference in conditions across the CWA itself. A more
active overall pattern for the area then prevails into the
weekend...

&&

.LONG TERM /SATURDAY THROUGH WEDNESDAY/...
Issued at 317 PM CDT Wed Sep 16 2026

We could see another opportunity for storms over the weekend as the
upper-level trough in the Pacific Northwest tries to push into our
area but it will be fighting the upper-level ridge over the SE US. A
surface low over the Central Plains will bring another cold front to
our area but with the battle between the upper-level trough and
ridge, that front will potentially stall out over our forecast area
bringing the potential for multiple rounds of rain Saturday and
Sunday night. The ridge begins to flatten out early next week and
there is high confidence the cold front will move off to the SE on
Monday with the 25th to 75th percentile ensemble spread indicating
high temperatures in the 70s.

&&

.AVIATION /00Z TAFS THROUGH 00Z FRIDAY/...
Issued at 634 PM CDT Wed Sep 16 2026

For the metro terminals, looking ahead at quiet VFR conditions
through the TAF period. A cold front will meander south overnight,
gradually shifting light winds from southerly to northwesterly, but
precipitation and low cigs will remain well north of the area so
little impact is expected. At KSTJ, fog looks increasingly
likely around sunrise, particularly between 12-14z. Could see
VIS below airport minimums (as low as 1/2SM) before conditions
begin to improve around 14z.

&&

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

&&

$$

SHORT TERM...Curtis
LONG TERM...IPC
AVIATION...Shaw
View a Different U.S. Forecast Discussion Location
(In alphabetical order by state)



Forecast Discussion from: NOAA-NWS Script developed by: El Dorado Weather






Contact Us Contact Us Thumbnail | Mobile Mobile Phone Thumbnail
Private Policy | Terms & Conds | Consent Preferences | Cookie Policy
Never base any life decisions on weather information from this site or anywhere over the Internet.
Site is dedicated to our Lord & Savior Jesus Christ | Random Quotes of Jesus

Copyright © 2026 El Dorado Weather, Inc. | Site Designed By:  Webmaster Danny