National Weather Service Forecast for: Owatonna MN
Issued by: National Weather Service Twin Cities/Chanhassen, MN
Updated: 1:36 am CDT Jun 30, 2026
 
Overnight

Overnight: A 50 percent chance of showers. Mostly cloudy, with a low around 76. South southwest wind 10 to 15 mph. New precipitation amounts of less than a tenth of an inch possible.
Chance
Showers
 Tuesday

Tuesday: A 20 percent chance of showers and thunderstorms, mainly between noon and 4pm. Partly sunny, with a high near 89. Heat index values as high as 99. South southwest wind 10 to 15 mph.
Slight Chance
T-storms
 Tuesday
Night
Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly after 4am. Increasing clouds, with a low around 72. South wind 5 to 10 mph.
Partly Cloudy
then Chance
T-storms
 Wednesday

Wednesday: Showers and thunderstorms likely, mainly before 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 86. South southwest wind 10 to 15 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Showers
Likely
 Wednesday
Night
Wednesday Night: Showers and thunderstorms before 4am, then a slight chance of showers. Low around 67. Southwest wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Showers

 Thursday

Thursday: Mostly sunny, with a high near 88. South southwest wind around 5 mph.
Mostly Sunny

 Thursday
Night
Thursday Night: Showers and possibly a thunderstorm. Low around 68. South southeast wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers

 Friday

Friday: A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 86. South southwest wind around 10 mph.
Chance
T-storms
 Friday
Night
Friday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68. Northwest wind 5 to 10 mph becoming southeast after midnight.
Chance
T-storms
Lo 76 °F Hi 89 °F Lo 72 °F Hi 86 °F Lo 67 °F Hi 88 °F Lo 68 °F Hi 86 °F Lo 68 °F

Hazardous Weather Outlook
Heat Advisory
 

Overnight
 
 A 50 percent chance of showers. Mostly cloudy, with a low around 76. South southwest wind 10 to 15 mph. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
 
 A 20 percent chance of showers and thunderstorms, mainly between noon and 4pm. Partly sunny, with a high near 89. Heat index values as high as 99. South southwest wind 10 to 15 mph.
Tuesday Night
 
 A 30 percent chance of showers and thunderstorms, mainly after 4am. Increasing clouds, with a low around 72. South wind 5 to 10 mph.
Wednesday
 
 Showers and thunderstorms likely, mainly before 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 86. South southwest wind 10 to 15 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
 
 Showers and thunderstorms before 4am, then a slight chance of showers. Low around 67. Southwest wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
 
 Mostly sunny, with a high near 88. South southwest wind around 5 mph.
Thursday Night
 
 Showers and possibly a thunderstorm. Low around 68. South southeast wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
 
 A 40 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 86. South southwest wind around 10 mph.
Friday Night
 
 A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68. Northwest wind 5 to 10 mph becoming southeast after midnight.
Independence Day
 
 A 40 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 85. East southeast wind around 10 mph.
Saturday Night
 
 A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66. East northeast wind 5 to 10 mph.
Sunday
 
 A 40 percent chance of showers. Partly sunny, with a high near 83. East wind 5 to 10 mph.
Sunday Night
 
 A 20 percent chance of showers. Partly cloudy, with a low around 63. North northeast wind 5 to 10 mph becoming east southeast after midnight.
Monday
 
 Mostly sunny, with a high near 83. East wind around 5 mph.

 

Forecast from NOAA-NWS for Owatonna MN.