National Weather Service Forecast for: Spencer IA
Issued by: National Weather Service Sioux Falls, SD
Updated: 10:48 pm CDT Jun 29, 2026
 
Tonight

Tonight: Showers and thunderstorms before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Low around 71. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Showers

 Tuesday

Tuesday: A 10 percent chance of showers and thunderstorms before 7am. Sunny, with a high near 93. West southwest wind 5 to 10 mph.
Slight Chance
T-storms then
Sunny
 Tuesday
Night
Tuesday Night: A chance of showers and thunderstorms between midnight and 2am, then showers likely and possibly a thunderstorm after 2am. Increasing clouds, with a low around 70. South wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Partly Cloudy
then Showers
Likely
 Wednesday

Wednesday: Showers likely and possibly a thunderstorm before 1pm. Mostly sunny, with a high near 90. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Showers
Likely and
Breezy
 Wednesday
Night
Wednesday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Chance
T-storms
 Thursday

Thursday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 90. South wind 5 to 10 mph.
Chance
Showers
 Thursday
Night
Thursday Night: Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 70. Chance of precipitation is 70%.
Showers
Likely
 Friday

Friday: Mostly sunny, with a high near 92.
Mostly Sunny

 Friday
Night
Friday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Chance
T-storms
Lo 71 °F Hi 93 °F Lo 70 °F Hi 90 °F Lo 70 °F Hi 90 °F Lo 70 °F Hi 92 °F Lo 70 °F

Hazardous Weather Outlook
 

Tonight
 
 Showers and thunderstorms before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Low around 71. Southwest wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
 
 A 10 percent chance of showers and thunderstorms before 7am. Sunny, with a high near 93. West southwest wind 5 to 10 mph.
Tuesday Night
 
 A chance of showers and thunderstorms between midnight and 2am, then showers likely and possibly a thunderstorm after 2am. Increasing clouds, with a low around 70. South wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
 
 Showers likely and possibly a thunderstorm before 1pm. Mostly sunny, with a high near 90. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Wednesday Night
 
 A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Thursday
 
 A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 90. South wind 5 to 10 mph.
Thursday Night
 
 Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 70. Chance of precipitation is 70%.
Friday
 
 Mostly sunny, with a high near 92.
Friday Night
 
 A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Independence Day
 
 A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 92. Chance of precipitation is 40%.
Saturday Night
 
 Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Chance of precipitation is 70%.
Sunday
 
 Mostly sunny, with a high near 86.
Sunday Night
 
 Mostly clear, with a low around 63.
Monday
 
 Mostly sunny, with a high near 86.

 

Forecast from NOAA-NWS for Spencer IA.