National Weather Service Forecast for: Saint Joseph MO
Issued by: National Weather Service Kansas City/Pleasant Hill, MO
Updated: 5:47 pm CDT Sep 12, 2026
 
Tonight

Tonight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. North northeast wind 3 to 7 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
Showers

 Sunday

Sunday: A chance of showers, with thunderstorms also possible after 7am. Partly sunny, with a high near 74. East northeast wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms

 Sunday
Night
Sunday Night: A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 62. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms

 Monday

Monday: A chance of showers and thunderstorms before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 89. Heat index values as high as 99. South wind 13 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Sunny
 Monday
Night
Monday Night: A slight chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 72. South wind 13 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Mostly Clear
then Slight
Chance
T-storms
 Tuesday

Tuesday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 84. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Chance
Showers then
Showers
 Tuesday
Night
Tuesday Night: Showers and possibly a thunderstorm. Low around 66. Chance of precipitation is 90%.
Showers

 Wednesday

Wednesday: Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 83. Chance of precipitation is 80%.
Showers

 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm. Low around 68. Chance of precipitation is 80%.
Showers
Lo 63 °F Hi 74 °F Lo 62 °F Hi 89 °F Lo 72 °F Hi 84 °F Lo 66 °F Hi 83 °F Lo 68 °F

Hazardous Weather Outlook
 

Tonight
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. North northeast wind 3 to 7 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
 
 A chance of showers, with thunderstorms also possible after 7am. Partly sunny, with a high near 74. East northeast wind 5 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
 
 A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms after 3am. Mostly cloudy, with a low around 62. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
 
 A chance of showers and thunderstorms before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 89. Heat index values as high as 99. South wind 13 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
 
 A slight chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 72. South wind 13 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Tuesday
 
 A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 84. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
 
 Showers and possibly a thunderstorm. Low around 66. Chance of precipitation is 90%.
Wednesday
 
 Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 83. Chance of precipitation is 80%.
Wednesday Night
 
 Showers and possibly a thunderstorm. Low around 68. Chance of precipitation is 80%.
Thursday
 
 Showers likely and possibly a thunderstorm before 1pm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Thursday Night
 
 A chance of showers. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Friday
 
 A chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 40%.
Friday Night
 
 A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.
Saturday
 
 A chance of showers. Partly sunny, with a high near 73. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Saint Joseph MO.