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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: 5:57 am CDT Apr 28, 2026
 
Today

Today: A slight chance of showers after 1pm.  Cloudy, then gradually becoming mostly sunny, with a high near 62. North northeast wind 6 to 8 mph.  Chance of precipitation is 20%.
Mostly Cloudy
then Slight
Chance
Showers
Tonight

Tonight: Mostly cloudy, with a low around 41. North wind around 7 mph.
Mostly Cloudy

Wednesday

Wednesday: Mostly sunny, with a high near 65. North northwest wind 5 to 7 mph.
Mostly Sunny

Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 43. Light and variable wind.
Partly Cloudy

Thursday

Thursday: A slight chance of showers and thunderstorms after 1pm.  Partly sunny, with a high near 67. Calm wind becoming west northwest 5 to 9 mph in the morning.  Chance of precipitation is 20%.
Partly Sunny
then Slight
Chance
T-storms
Thursday
Night
Thursday Night: Mostly cloudy, with a low around 40.
Mostly Cloudy

Friday

Friday: Mostly sunny, with a high near 64.
Mostly Sunny

Friday
Night
Friday Night: Partly cloudy, with a low around 39.
Partly Cloudy

Saturday

Saturday: Sunny, with a high near 68.
Sunny

Hi 62 °F Lo 41 °F Hi 65 °F Lo 43 °F Hi 67 °F Lo 40 °F Hi 64 °F Lo 39 °F Hi 68 °F

Hazardous Weather Outlook
 

Today
 
A slight chance of showers after 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 62. North northeast wind 6 to 8 mph. Chance of precipitation is 20%.
Tonight
 
Mostly cloudy, with a low around 41. North wind around 7 mph.
Wednesday
 
Mostly sunny, with a high near 65. North northwest wind 5 to 7 mph.
Wednesday Night
 
Partly cloudy, with a low around 43. Light and variable wind.
Thursday
 
A slight chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 67. Calm wind becoming west northwest 5 to 9 mph in the morning. Chance of precipitation is 20%.
Thursday Night
 
Mostly cloudy, with a low around 40.
Friday
 
Mostly sunny, with a high near 64.
Friday Night
 
Partly cloudy, with a low around 39.
Saturday
 
Sunny, with a high near 68.
Saturday Night
 
Mostly clear, with a low around 45.
Sunday
 
Sunny, with a high near 77.
Sunday Night
 
Partly cloudy, with a low around 51.
Monday
 
Mostly sunny, with a high near 78.

 

Forecast from NOAA-NWS for Saint Joseph MO.

Weather Forecast Discussion
467
FXUS63 KEAX 281125
AFDEAX

Area Forecast Discussion
National Weather Service Kansas City/Pleasant Hill MO
625 AM CDT Tue Apr 28 2026

.KEY MESSAGES...

- Chance for showers this afternoon, with greater chances
  (50-70%) towards southern MO.

- Cooler temperatures and quieter conditions overall, with
  scattered chances for precipitation near the end of the
  forecast period.

&&

.DISCUSSION...
Issued at 330 AM CDT Tue Apr 28 2026

Quieter weather will persist through the overnight and into the
morning. Presently, the upper level trough is situated west of
the Hudson Bay, as the shortwave that triggered our recent round
of severe weather lifts off towards the Great Lakes. Surface
high pressure will maintain northerly winds, and help drier,
cooler conditions prevail in the short term. Going into the
afternoon, a passing surface low and it`s associated shortwave
trough will reinvigorate precipitation in southern MO. Low-
level moisture transport will be mitigated through the day by
surface high pressure promoting advection of drier air through
the forecast area, keeping higher chances (50-70%) of
showers/storms further south. However, greater upper level
moisture transport broadly encompassing central/northern MO and
broad-scale lift ahead of the shortwave will push slight chances
(10-30%) of precipitation further north through the day. In
addition to this, instability will greatly remain further south
than our forecast area, minimizing the potential for severe
storms during the day. However, some rumbles of thunder are
still possible with whatever instability is able to generate in
the atmosphere during the day.

After today, the upper level trough is progged to dig down
towards the Great Lakes. As this trough propagates and
eventually stalls over the Great Lakes behind an amplified ridge
over the Atlantic, it will place us under a generally
north/northwesterly flow regime for the next few days. This will
help keep our temperatures cooler and conditions drier to close
out what has been a very active past month. Embedded shortwaves
within the broader upper level pattern will invigorate slight
chances (10-20%) of precipitation Thursday afternoon along a
convergent boundary. This blocking pattern in the upper-levels
will persist, with amplified shortwave ridging and surface high
pressure building into our area as the upper level trough
wobbles eastward with momentum from a passing shortwave trough.
This will help keep conditions dry over the weekend. Another
series of disturbances in the flow will invigorate low-end
chances for precipitation to end out the forecast period, aided
by southerly surface flow transporting warmer, moister air from
the south as the surface high traverses east. Increased model
divergence at this point decreases overall confidence in
precipitation during this period, however.

&&

.AVIATION /12Z TAFS THROUGH 12Z WEDNESDAY/...
Issued at 620 AM CDT Tue Apr 28 2026

Fuel-alternate ceilings expected to through the morning, before
rising to high-end MVFR by 16z. Through the afternoon,
expecting ceilings to gradually lift to low-end VFR. Winds
expected to prevail northerly, shifting northeasterly through
the day before shifting back out of the north around 3-4z,
sustained around 5-10 kts. There is a low chance for light
showers to impact downtown terminals, but with increasingly
drier conditions indicated by guidance, have elected to keep
PROB30 mentions for showers out of this TAF issuance.

&&

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

&&

$$

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






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