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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: 1:31 am CDT Apr 26, 2026 |
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Overnight
 Chance T-storms
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Sunday
 Chance T-storms
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Sunday Night
 Heavy Rain
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Monday
 Showers Likely
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Monday Night
 Partly Cloudy
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Tuesday
 Partly Sunny
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Tuesday Night
 Partly Cloudy
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Wednesday
 Sunny
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Wednesday Night
 Partly Cloudy
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| Lo 56 °F |
Hi 76 °F |
Lo 62 °F |
Hi 77 °F |
Lo 44 °F |
Hi 64 °F |
Lo 41 °F |
Hi 66 °F |
Lo 43 °F |
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Hazardous Weather Outlook
Overnight
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A chance of showers and thunderstorms, mainly before 4am. Mostly cloudy, with a low around 56. East wind around 6 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Sunday
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A chance of showers and thunderstorms, mainly after 5pm. Mostly cloudy, with a high near 76. Southeast wind 7 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. |
Sunday Night
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Showers and thunderstorms, mainly before midnight, then showers and possibly a thunderstorm after midnight. Some of the storms could produce heavy rainfall. Low around 62. East southeast wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible. |
Monday
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Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 77. Southeast wind 14 to 18 mph becoming west in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. |
Monday Night
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Partly cloudy, with a low around 44. West northwest wind 9 to 16 mph, with gusts as high as 28 mph. |
Tuesday
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Partly sunny, with a high near 64. |
Tuesday Night
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Partly cloudy, with a low around 41. |
Wednesday
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Sunny, with a high near 66. |
Wednesday Night
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Partly cloudy, with a low around 43. |
Thursday
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Partly sunny, with a high near 68. |
Thursday Night
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Mostly cloudy, with a low around 45. |
Friday
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Partly sunny, with a high near 67. |
Friday Night
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Partly cloudy, with a low around 42. |
Saturday
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Mostly sunny, with a high near 72. |
Forecast from NOAA-NWS
for Saint Joseph MO.
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Weather Forecast Discussion
524
FXUS63 KEAX 260442
AFDEAX
Area Forecast Discussion
National Weather Service Kansas City/Pleasant Hill MO
1142 PM CDT Sat Apr 25 2026
...06Z Aviation Update...
.KEY MESSAGES...
- An isolated non-severe storm is possible this evening across far
eastern KS into far western Missouri.
- Increasing severe weather threat later in the day on Sunday into
Sunday night. All modes of severe weather are possible.
- Cooler and drier conditions are expected behind a strong cold
front moving through the region mid-day Monday.
&&
.DISCUSSION...
Issued at 308 PM CDT Sat Apr 25 2026
Cold front associated with an occluded low pressure center across
central Canada will continue to slowly push east this afternoon and
evening. Ahead of the front, a weakly unstable atmosphere exists
with increasing low level moisture. There is a fair amount of cloud
cover across central and eastern KS, but still could see a few
showers and thunderstorms develop in the vicinity of the cold front
with 750-1000 J/kg of ML CAPE and weak short wave building east.
CAMs suggest a few of these storms may approach eastern Kansas into
far western Missouri this evening, though the trend has been to
shift timing a bit later in the evening. Severe weather is not
expected with this activity with relatively weak instability.
Sunday, a developing low pressure system in the central Rockies is
expected to lead to increasing southerly winds. As the warm front
noses into the region, increasing shear and instability is expected.
0-6 km bulk shear increases to 30-40 knots west of the warm front
and surface based CAPE increases to 1500-2500 J/kg. Forecast
soundings suggest there is a bit of a cap near 700 mb, but 25-35
knot low level jet developing Sunday evening across the plains may
weaken the cap. Models also suggest a series of short waves moving
across KS that could assist in the development of convection, but
are largely focused after 06Z Monday. The left exit region of the
upper level jet also noses into the region after 06-09Z Monday,
potentially assisting in lift developing across the region. This all
said. That there are multiple triggers but no clear indication on
if/what will get convection going.
Strong cold front is expected to work through the region mid-day
Monday, bringing an end to the potential for storms. Cooler and
drier conditions are expected through much of the remainder of the
week.
&&
.AVIATION /06Z TAFS THROUGH 06Z MONDAY/...
Issued at 1142 PM CDT Sat Apr 25 2026
VFR conditions are likely through most of the overnight. But
MVFR ceilings may build east into the area around sunrise
tomorrow and linger for much of the morning hours. Probabilities
are higher in KS for low MVFR so have added a prevailing group
to IXD for that. Further east, have only scattered low MVFR and
prevailing non fuel-alternate MVFR ceilings. As cloud bases
gradually raise through the morning, winds will start to
increase and have kept some mention of gusts to 25kts going. The
most likely period for storms looks like late tomorrow
afternoon and then through the overnight hours, mainly along and
north of the MO River. With uncertainty still quite high, have
only gone with a PROB30 group to account for this with shorter
overall times at IXD and longer times further north.
&&
.EAX WATCHES/WARNINGS/ADVISORIES...
MO...None.
KS...None.
&&
$$
DISCUSSION...BT
AVIATION...CDB
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