St. Joseph, Missouri 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

672
FXUS63 KEAX 010438
AFDEAX

Area Forecast Discussion
National Weather Service Kansas City/Pleasant Hill MO
1138 PM CDT Mon Aug 31 2026

.KEY MESSAGES...

- Temperatures well above normal expected through the forecast
period.

    - Heat Advisory currently in effect until Friday evening.
    - Heat index values between 100 and 105
    - Temperatures in the mid 90s up to 100

&&

.DISCUSSION...
Issued at 1135 PM CDT Mon Aug 31 2026

Heat continues to be the primary concern with the upper-level high
that extends from the Southern Plains into the Mississippi and Ohio
River Valleys. This pattern will remain mostly unchanged through the
week with the high moving slightly eastward Wednesday into Thursday
before moving back to the west over the Great Plains by the end of
this week. As a result, there will not be much relief from the
heat as highs remain in the mid to upper 90s and overnight lows
only drop down into the mid to upper 70s. Southerly flow into
the region will bring increasing moisture as the week goes on
supporting heat index values between 100 and 105 with the
greatest chance (15-25%) of reaching 105 on Friday afternoon for
areas south of I-70. Northern MO could see some relief from the
heat as high pressure moves back west this weekend and
shortwaves along the eastern edge of the ridge could trigger
some convection.

&&

.AVIATION /06Z TAFS THROUGH 06Z WEDNESDAY/...
Issued at 1135 PM CDT Mon Aug 31 2026

VFR conditions expected through the period with a breeze out of the
SSW.

&&

.EAX WATCHES/WARNINGS/ADVISORIES...
MO...Heat Advisory until 8 PM CDT Friday for MOZ003>008-012>017-
     020>025-028>033-037>040-043>046-053-054.
     Air Quality Alert from 9 AM to 7 PM CDT Tuesday for MOZ028>030-
     037-043.
KS...Heat Advisory until 8 PM CDT Friday for KSZ025-057-060-102>105.
     Air Quality Alert from 9 AM to 7 PM CDT Tuesday for KSZ057-
     103>105.

&&

$$

DISCUSSION...IPC
AVIATION...IPC