National Weather Service Forecast for: Merriam KS
Issued by: National Weather Service Kansas City/Pleasant Hill, MO
Updated: 11:07 pm CDT Sep 12, 2026
 
Tonight

Tonight: A chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 66. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
Chance
T-storms

 Sunday

Sunday: Mostly cloudy, with a high near 79. East wind 5 to 8 mph.
Mostly Cloudy

 Sunday
Night
Sunday Night: A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 66. East northeast wind around 10 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
Chance
T-storms

 Monday

Monday: A slight chance of showers and thunderstorms before 8am. Mostly cloudy through mid morning, then gradual clearing, with a high near 91. Heat index values as high as 103. East southeast wind 11 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Slight Chance
T-storms then
Sunny
 Monday
Night
Monday Night: Mostly clear, with a low around 75. South wind around 14 mph, with gusts as high as 23 mph.
Mostly Clear

 Tuesday

Tuesday: Showers likely, with thunderstorms also possible after 4pm. Partly sunny, with a high near 85. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
Showers then
Showers
Likely
 Tuesday
Night
Tuesday Night: Showers, with thunderstorms also possible after 7pm. Low around 68. Chance of precipitation is 80%.
Showers

 Wednesday

Wednesday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Showers
Likely

 Wednesday
Night
Wednesday Night: A chance of showers after 1am. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Partly Cloudy
then Chance
Showers
Lo 66 °F Hi 79 °F Lo 66 °F Hi 91 °F Lo 75 °F Hi 85 °F Lo 68 °F Hi 86 °F Lo 72 °F

Hazardous Weather Outlook
 

Tonight
 
 A chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 66. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
 
 Mostly cloudy, with a high near 79. East wind 5 to 8 mph.
Sunday Night
 
 A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 66. East northeast wind around 10 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
Monday
 
 A slight chance of showers and thunderstorms before 8am. Mostly cloudy through mid morning, then gradual clearing, with a high near 91. Heat index values as high as 103. East southeast wind 11 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Monday Night
 
 Mostly clear, with a low around 75. South wind around 14 mph, with gusts as high as 23 mph.
Tuesday
 
 Showers likely, with thunderstorms also possible after 4pm. Partly sunny, with a high near 85. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
 
 Showers, with thunderstorms also possible after 7pm. Low around 68. Chance of precipitation is 80%.
Wednesday
 
 Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 60%.
Wednesday Night
 
 A chance of showers after 1am. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Thursday
 
 A chance of showers before 1pm. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Thursday Night
 
 A chance of showers. Partly cloudy, with a low around 69. Chance of precipitation is 40%.
Friday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 82. Chance of precipitation is 50%.
Friday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 50%.
Saturday
 
 A chance of showers. Partly sunny, with a high near 77. Chance of precipitation is 40%.

 

Forecast from NOAA-NWS for Merriam KS.