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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: 10:42 pm CDT Jun 22, 2026 |
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Overnight
 Partly Cloudy
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Tuesday
 Increasing Clouds
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Tuesday Night
 Mostly Cloudy then Chance Showers
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Wednesday
 Slight Chance T-storms and Patchy Fog
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Wednesday Night
 Partly Cloudy then Slight Chance Showers
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Thursday
 Slight Chance Showers then Chance Showers
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Thursday Night
 Chance T-storms then Showers Likely
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Friday
 Chance T-storms
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Friday Night
 Mostly Cloudy
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| Lo 59 °F |
Hi 81 °F |
Lo 66 °F |
Hi 83 °F |
Lo 64 °F |
Hi 80 °F |
Lo 64 °F |
Hi 82 °F |
Lo 69 °F |
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Hazardous Weather Outlook
Overnight
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Partly cloudy, with a low around 59. Calm wind. |
Tuesday
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Increasing clouds, with a high near 81. Calm wind becoming south southeast 5 to 7 mph in the morning. |
Tuesday Night
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A chance of showers, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 66. South southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Wednesday
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A slight chance of showers and thunderstorms, mainly between 10am and 1pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 83. Calm wind becoming north around 6 mph in the afternoon. Chance of precipitation is 20%. |
Wednesday Night
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A slight chance of showers after 1am. Partly cloudy, with a low around 64. North wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%. |
Thursday
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A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Thursday Night
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A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%. |
Friday
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A chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 82. Chance of precipitation is 50%. |
Friday Night
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Mostly cloudy, with a low around 69. |
Saturday
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Partly sunny, with a high near 88. |
Saturday Night
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Partly cloudy, with a low around 76. |
Sunday
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Sunny, with a high near 93. Breezy. |
Sunday Night
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Mostly clear, with a low around 77. |
Monday
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Sunny, with a high near 93. Breezy. |
Forecast from NOAA-NWS
for Saint Joseph MO.
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Weather Forecast Discussion
007
FXUS63 KEAX 230450
AFDEAX
Area Forecast Discussion
National Weather Service Kansas City/Pleasant Hill MO
1150 PM CDT Mon Jun 22 2026
.KEY MESSAGES...
- Below normal temperatures through Friday (upper 70s to lower
80s)
- The upcoming weekend will see more heat and temperatures
flipping to above normal (upper 80s and lower 90s)
- Rain chances return Tuesday afternoon and more so Tuesday
night (20-60%). The highest rain chances for the period are
currently Thursday evening - Friday morning (50-80%).
&&
.DISCUSSION...
Issued at 205 PM CDT Mon Jun 22 2026
This evening will remain dry and unseasonably cool (upper 60s
to lower 70s) with light winds making for a very pleasant
evening. Many locations will see overnight lows in the 50s.
Tuesday into Tuesday Night Rain Chances...
Cool northwesterly flow pattern will continue through at least
mid week with high temperatures well below normal. We are
watching a weak/subtle shortwave that is expected to track
through the forecast area Tuesday evening. Several forecast
models indicate a possible area of showers/thunderstorms
tracking across central Nebraska into northern Kansas Tuesday
morning into the afternoon hours. Most models and ensemble
members dive this convection more to the northwest and west of
our forecast area with the precipitation dieing out Tuesday
afternoon to our west. The 12Z and now 18Z HRRR have been the
furthest east with this Tuesday afternoon showers/thunderstorms
and would impact our northeast and eastern forecast area. There
is still a lot of uncertainty, but decided to introduce at least
20-30% rain chances for Tuesday afternoon across our eastern
zones. Currently the better chance for precipitation across our
area based on the NBM and plurality of the models would be later
Tuesday night (30-60%) and favor our southeastern zones.
Wednesday...
The Tuesday evening shortwave will depart, but we could still
see come linger showers/thunderstorms mainly across our south
Wednesday morning with decreasing precipitation chances from
north to south through the day. We will start to warm up but
only back to around 80 which is still below normal for this time
of year.
Thursday Through Friday...
The overall pattern becomes zonal and a more pronounced
shortwave is expected to track across Kansas and Missouri.
Exact timing is still fairly questionable, but rain chances will
be on the increase peaking Thursday evening/night into Friday
morning (50-80%). Will hopefully be better able to nail down
the timing of rain chances as we get closer.
Saturday through Monday...
Zonal flow should transition into upper level ridging which
should bring warmer (90s) and generally drier conditions back
to the region. Heat index values could climb into the 100-110
range by Sunday and Monday if this pattern transpires. The model
spread is currently rather tight for this period indicating good
confidence in this expected warmup.
&&
.AVIATION /06Z TAFS THROUGH 06Z WEDNESDAY/...
Issued at 1057 PM CDT Mon Jun 22 2026
VFR conditions are expected through the period with cloud cover
increasing slightly by Tuesday afternoon and evening. Winds
should remain light (below 10 knots) and generally out of the
southeast.
&&
.EAX WATCHES/WARNINGS/ADVISORIES...
MO...None.
KS...None.
&&
$$
DISCUSSION...Wesely
AVIATION...BMW
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