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St. Joseph, Missouri 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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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: 3:16 am CDT Jun 28, 2026 |
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Today
 Sunny then Sunny and Breezy
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Tonight
 Mostly Clear
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Monday
 Mostly Sunny then Mostly Sunny and Breezy
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Monday Night
 Partly Cloudy
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Tuesday
 Sunny
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Tuesday Night
 Mostly Clear
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Wednesday
 Sunny
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Wednesday Night
 Partly Cloudy
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Thursday
 Mostly Sunny
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| Hi 94 °F |
Lo 79 °F |
Hi 94 °F |
Lo 79 °F |
Hi 95 °F |
Lo 77 °F |
Hi 95 °F |
Lo 77 °F |
Hi 96 °F |
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Extreme Heat Warning
Hazardous Weather Outlook
Today
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Sunny, with a high near 94. Heat index values as high as 109. Breezy, with a south wind 14 to 20 mph, with gusts as high as 31 mph. |
Tonight
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Mostly clear, with a low around 79. South wind 14 to 18 mph, with gusts as high as 30 mph. |
Monday
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Mostly sunny, with a high near 94. Heat index values as high as 109. Breezy, with a south wind 15 to 21 mph, with gusts as high as 33 mph. |
Monday Night
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Partly cloudy, with a low around 79. South wind 15 to 18 mph, with gusts as high as 32 mph. |
Tuesday
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Sunny, with a high near 95. South wind 15 to 17 mph, with gusts as high as 29 mph. |
Tuesday Night
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Mostly clear, with a low around 77. |
Wednesday
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Sunny, with a high near 95. |
Wednesday Night
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Partly cloudy, with a low around 77. |
Thursday
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Mostly sunny, with a high near 96. |
Thursday Night
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Partly cloudy, with a low around 76. |
Friday
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Mostly sunny and hot, with a high near 97. |
Friday Night
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Mostly clear, with a low around 77. |
Independence Day
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Sunny and hot, with a high near 98. |
Forecast from NOAA-NWS
for Saint Joseph MO.
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Weather Forecast Discussion
653
FXUS63 KEAX 281037
AFDEAX
Area Forecast Discussion
National Weather Service Kansas City/Pleasant Hill MO
537 AM CDT Sun Jun 28 2026
...Updated Aviation Discussion...
.KEY MESSAGES...
* A prolonged period of hazardous heat begins building into the
region today. An Extreme Heat Warning will take effect this
afternoon at 1 PM CDT and remain in effect through late
Thursday night.
&&
.DISCUSSION...
Issued at 254 AM CDT Sun Jun 28 2026
Today, blocking high pressure will establish itself across the
central and eastern portions of the CONUS. Analysis of 500 mb
clusters and mid-range guidance suggest that this upper-level
pattern is likely to persist through the end of the work week with
the first indications of anticyclolysis not apparent until Saturday.
Temperatures in excess of 90F are likely this week, with REFS
probabilities of exceedance hovering around 90% areawide today and
Monday. With dewpoints in the mid/upper 70s, heat indices are
expected to soar into the mid 100s with some areas potentially
approaching 110F. Overnight lows are expected to remain in the
mid/upper 70s for much of the week as well, potentially perpetuating
hazardous heat impacts. Widespread Major (Level 3 of 4) HeatRisk is
expected by Monday, with a signal for Extreme (Level 4 of 4)
HeatRisk first appearing in central Missouri around the same time.
With high confidence in a multi-day stretch of hazardous heat, an
Extreme Heat Warning will go into effect at 1 PM CDT this afternoon
and will remain in effect through at least late Thursday night. An
extension in time or additional heat products may be needed in
future forecast updates.
Outside of heat, windy conditions are expected to close out the
weekend and continue into the early portions of the week ahead,
likely due to the entrainment of rising thermals from solar heating.
Forecast soundings suggest 25-35 kts of momentum transfer through
Tuesday evening. The signal for strong gusts becomes less impressive
by mid/late week but potential for ~20 kt gusts still exists through
Friday, though this is mainly north of US-36.
&&
.AVIATION /12Z TAFS THROUGH 12Z MONDAY/...
Issued at 532 AM CDT Sun Jun 28 2026
VFR conditions are expected over the TAF sites during this TAF
forecast period. There are some low CIGs over northeastern
Missouri this morning and these will continue to push northeast
and thin this morning. Winds are beginning to pick up this
morning and will be sustained 14-18kts and gusting up to 30kts
this afternoon. This evening, winds and gusts will relax a bit
but will remain elevated overnight.
&&
.EAX WATCHES/WARNINGS/ADVISORIES...
MO...Extreme Heat Warning from 1 PM this afternoon to midnight CDT
Thursday night for MOZ001>008-011>017-020>025-028>033-
037>040-043>046-053-054.
KS...Extreme Heat Warning from 1 PM this afternoon to midnight CDT
Thursday night for KSZ025-057-060-102>105.
&&
$$
DISCUSSION...Macko
AVIATION...Wilson
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