National Weather Service Forecast for: Saint Joseph MO
Issued by: National Weather Service Kansas City/Pleasant Hill, MO
Updated: 11:42 pm CDT Jun 29, 2026
 
Overnight

Overnight: Partly cloudy, with a low around 79. South wind 14 to 16 mph, with gusts as high as 30 mph.
Partly Cloudy
 Tuesday

Tuesday: Mostly sunny, with a high near 95. Heat index values as high as 105. South southwest wind 13 to 17 mph, with gusts as high as 31 mph.
Mostly Sunny
 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 77. South wind 13 to 15 mph, with gusts as high as 26 mph.
Partly Cloudy
 Wednesday

Wednesday: Mostly sunny, with a high near 94. Heat index values as high as 101. South wind 13 to 17 mph, with gusts as high as 29 mph.
Mostly Sunny
 Wednesday
Night
Wednesday Night: Partly cloudy, with a low around 77. South wind 10 to 15 mph, with gusts as high as 26 mph.
Partly Cloudy
 Thursday

Thursday: A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 94. Chance of precipitation is 20%.
Slight Chance
T-storms
 Thursday
Night
Thursday Night: Partly cloudy, with a low around 76.
Partly Cloudy
 Friday

Friday: Mostly sunny and hot, with a high near 97.
Hot
 Friday
Night
Friday Night: Partly cloudy, with a low around 76.
Partly Cloudy
Lo 79 °F Hi 95 °F Lo 77 °F Hi 94 °F Lo 77 °F Hi 94 °F Lo 76 °F Hi 97 °F Lo 76 °F

Hazardous Weather Outlook
Extreme Heat Warning
 

Overnight
 
 Partly cloudy, with a low around 79. South wind 14 to 16 mph, with gusts as high as 30 mph.
Tuesday
 
 Mostly sunny, with a high near 95. Heat index values as high as 105. South southwest wind 13 to 17 mph, with gusts as high as 31 mph.
Tuesday Night
 
 Partly cloudy, with a low around 77. South wind 13 to 15 mph, with gusts as high as 26 mph.
Wednesday
 
 Mostly sunny, with a high near 94. Heat index values as high as 101. South wind 13 to 17 mph, with gusts as high as 29 mph.
Wednesday Night
 
 Partly cloudy, with a low around 77. South wind 10 to 15 mph, with gusts as high as 26 mph.
Thursday
 
 A slight chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 94. Chance of precipitation is 20%.
Thursday Night
 
 Partly cloudy, with a low around 76.
Friday
 
 Mostly sunny and hot, with a high near 97.
Friday Night
 
 Partly cloudy, with a low around 76.
Independence Day
 
 Mostly sunny and hot, with a high near 97.
Saturday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 74. Chance of precipitation is 50%.
Sunday
 
 Partly sunny, with a high near 93.
Sunday Night
 
 Partly cloudy, with a low around 71.
Monday
 
 Mostly sunny, with a high near 91.

 

Forecast from NOAA-NWS for Saint Joseph MO.