Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Owatonna Degner Regional Airport (KOWA)

Lat: 44.12°NLon: 93.26°WElev: 1129ft.

Mostly Cloudy

69°F

21°C

Humidity 100%
Wind Speed SE 10 mph
Barometer 29.93 in
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 18 Aug 4:15 am CDT
Extended Forecast for

Owatonna MN

Flood Watch August 18, 04:20am until August 18, 10:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch August 18, 04:20am until August 18, 10:00am

    NOW until 10:00am Mon

    Flood Watch

  • Overnight

    Low: 69 °F

    Chance
    T-storms

  • Monday

    Monday: Showers and thunderstorms likely, mainly before 1pm.  Cloudy, then gradually becoming mostly sunny, with a high near 84. Southeast wind around 10 mph becoming west southwest in the afternoon.  Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 84 °F

    Showers
    Likely then
    Chance
    T-storms

  • Monday Night

    Monday Night: Patchy fog after 9pm.  Otherwise, partly cloudy, with a low around 66. West wind around 5 mph becoming calm  in the evening.

    Low: 66 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 81. North wind around 5 mph.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 11pm.  Otherwise, mostly clear, with a low around 60. North wind around 5 mph becoming calm  in the evening.

    Low: 60 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 9am.  Otherwise, sunny, with a high near 79. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 79 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 11pm.  Otherwise, mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Patchy Fog

  • Thursday

    Thursday: Patchy fog before 9am.  Otherwise, sunny, with a high near 79. Calm wind becoming south around 5 mph in the afternoon.

    High: 79 °F

    Patchy Fog
    then Sunny

Detailed Forecast

Overnight
A 50 percent chance of showers and thunderstorms. Cloudy, with a low around 69. East southeast wind around 10 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers and thunderstorms likely, mainly before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 84. Southeast wind around 10 mph becoming west southwest in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Patchy fog after 9pm. Otherwise, partly cloudy, with a low around 66. West wind around 5 mph becoming calm in the evening.
Tuesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 81. North wind around 5 mph.
Tuesday Night
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 60. North wind around 5 mph becoming calm in the evening.
Wednesday
Patchy fog before 9am. Otherwise, sunny, with a high near 79. Calm wind becoming east northeast around 5 mph in the afternoon.
Wednesday Night
Patchy fog after 11pm. Otherwise, mostly clear, with a low around 58. Calm wind.
Thursday
Patchy fog before 9am. Otherwise, sunny, with a high near 79. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
Increasing clouds, with a low around 61. South wind around 5 mph.
Friday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 77. South southwest wind around 5 mph becoming northwest in the afternoon. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 55. West wind around 5 mph.
Saturday
Sunny, with a high near 71. West northwest wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 49. Northwest wind around 5 mph.
Sunday
Sunny, with a high near 68. Northwest wind 5 to 10 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Owatonna MN
 44.1°N 93.23°W (Elev. 1158 ft)
3:09 am CDT Aug 18, 2025
4am CDT Aug 18, 2025-6pm CDT Aug 24, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database