National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Winona, Winona Municipal Airport-Max Conrad Field (KONA)

Lat: 44.08°NLon: 91.7°WElev: 656ft.

Fair

81°F

27°C

Humidity 66%
Wind Speed Calm
Barometer 29.93 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 10 Aug 7:15 pm CDT
Extended Forecast for

Saint Charles MN

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 66. East wind around 6 mph.

    Low: 66 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am. Cloudy through mid morning, then gradual clearing, with a high near 82. East wind 5 to 7 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Chance
    T-storms then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms between 4am and 5am. Increasing clouds, with a low around 66. Light and variable wind. Chance of precipitation is 20%.

    Low: 66 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms between 7am and 4pm, then a slight chance of showers after 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 82. Light and variable wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 64. Light and variable wind.

    Low: 64 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 77. Northeast wind 3 to 6 mph.

    High: 77 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 60. West wind 5 to 7 mph becoming east after midnight.

    Low: 60 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 75. East wind 8 to 10 mph.

    High: 75 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Southeast wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.

    Low: 59 °F

    Showers
    Likely

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 66. East wind around 6 mph.
Tuesday
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am. Cloudy through mid morning, then gradual clearing, with a high near 82. East wind 5 to 7 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A slight chance of showers and thunderstorms between 4am and 5am. Increasing clouds, with a low around 66. Light and variable wind. Chance of precipitation is 20%.
Wednesday
A slight chance of showers and thunderstorms between 7am and 4pm, then a slight chance of showers after 4pm. Mostly cloudy, then gradually becoming sunny, with a high near 82. Light and variable wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, with a low around 64. Light and variable wind.
Thursday
A 30 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 77. Northeast wind 3 to 6 mph.
Thursday Night
Mostly cloudy, with a low around 60. West wind 5 to 7 mph becoming east after midnight.
Friday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 75. East wind 8 to 10 mph.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Southeast wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 60%.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 73. Southeast wind 9 to 11 mph becoming southwest in the afternoon. Chance of precipitation is 50%.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 61. Southwest wind around 7 mph becoming northwest after midnight.
Sunday
A 20 percent chance of showers. Partly sunny, with a high near 74. Northwest wind around 8 mph.
Sunday Night
Partly cloudy, with a low around 58. North wind 3 to 6 mph.
Monday
Mostly sunny, with a high near 74. Light and variable wind becoming south around 5 mph in the afternoon.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Charles MN
 43.97°N 92.07°W
Last Update:
5:31 pm CDT Aug 10, 2026
Forecast Valid:
7pm CDT Aug 10, 2026-6pm CDT Aug 17, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation