National Weather Service Forecast for: Marion IA
Issued by: National Weather Service Quad Cities, IA/IL
Updated: 7:31 pm CDT Sep 12, 2026
 
Tonight

Tonight: A 20 percent chance of showers after 4am. Mostly clear, with a low around 56. North wind around 5 mph.
Mostly Clear
then Slight
Chance
Showers
 Sunday

Sunday: A 30 percent chance of showers, mainly between 11am and 4pm. Increasing clouds, with a high near 73. North wind around 5 mph.
Chance
Showers

 Sunday
Night
Sunday Night: Partly cloudy, with a low around 53. Calm wind becoming east around 5 mph after midnight.
Partly Cloudy

 Monday

Monday: Showers likely, with thunderstorms also possible after 4pm. Partly sunny, with a high near 77. Southeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Showers
Likely

 Monday
Night
Monday Night: A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 67. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Chance
T-storms then
Showers
 Tuesday

Tuesday: Showers and possibly a thunderstorm. High near 80. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Showers

 Tuesday
Night
Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Chance
T-storms then
Showers
Likely
 Wednesday

Wednesday: Showers and possibly a thunderstorm. High near 71. Chance of precipitation is 80%.
Showers

 Wednesday
Night
Wednesday Night: Showers likely and possibly a thunderstorm, then showers after 1am. Low around 63. Chance of precipitation is 80%.
Showers
Lo 56 °F Hi 73 °F Lo 53 °F Hi 77 °F Lo 67 °F Hi 80 °F Lo 59 °F Hi 71 °F Lo 63 °F

 

Tonight
 
 A 20 percent chance of showers after 4am. Mostly clear, with a low around 56. North wind around 5 mph.
Sunday
 
 A 30 percent chance of showers, mainly between 11am and 4pm. Increasing clouds, with a high near 73. North wind around 5 mph.
Sunday Night
 
 Partly cloudy, with a low around 53. Calm wind becoming east around 5 mph after midnight.
Monday
 
 Showers likely, with thunderstorms also possible after 4pm. Partly sunny, with a high near 77. Southeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Monday Night
 
 A chance of showers before 10pm, then a chance of showers and thunderstorms between 10pm and 1am, then showers and possibly a thunderstorm after 1am. Low around 67. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday
 
 Showers and possibly a thunderstorm. High near 80. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
 
 A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Wednesday
 
 Showers and possibly a thunderstorm. High near 71. Chance of precipitation is 80%.
Wednesday Night
 
 Showers likely and possibly a thunderstorm, then showers after 1am. Low around 63. Chance of precipitation is 80%.
Thursday
 
 A 50 percent chance of showers before 1pm. Mostly cloudy, with a high near 76.
Thursday Night
 
 A 50 percent chance of showers. Mostly cloudy, with a low around 58.
Friday
 
 A 40 percent chance of showers. Partly sunny, with a high near 75.
Friday Night
 
 A 40 percent chance of showers. Mostly cloudy, with a low around 57.
Saturday
 
 A 30 percent chance of showers. Partly sunny, with a high near 73.

 

Forecast from NOAA-NWS for Marion IA.