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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Hazardous Weather Conditions

Current conditions at

Mankato, Mankato Regional Airport (KMKT)

Lat: 44.22°NLon: 93.92°WElev: 1020ft.

Overcast

76°F

24°C

Humidity 91%
Wind Speed E 10 mph
Barometer 29.98 in (1014.8 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 17 Aug 12:56 am CDT
Extended Forecast for

Mankato MN

  • Overnight

    Overnight: Showers and thunderstorms likely, mainly before 4am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 70. East northeast wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 70 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers and thunderstorms likely before 10am, then a chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 83. East wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 83 °F

    Showers
    Likely then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. East southeast wind around 10 mph becoming south after midnight. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 71 °F

    T-storms
    Likely

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 84. South wind around 10 mph becoming west northwest in the afternoon.

    High: 84 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 63. North wind around 5 mph.

    Low: 63 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 79. North wind around 5 mph.

    High: 79 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60. Northeast wind around 5 mph.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 80. Northeast wind around 5 mph.

    High: 80 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 59. East northeast wind around 5 mph becoming south southeast after midnight.

    Low: 59 °F

    Clear

Detailed Forecast

Overnight
Showers and thunderstorms likely, mainly before 4am, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 70. East northeast wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Showers and thunderstorms likely before 10am, then a chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 83. East wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and thunderstorms likely before 1am, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 71. East southeast wind around 10 mph becoming south after midnight. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 84. South wind around 10 mph becoming west northwest in the afternoon.
Monday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 63. North wind around 5 mph.
Tuesday
Partly sunny, with a high near 79. North wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 60. Northeast wind around 5 mph.
Wednesday
Sunny, with a high near 80. Northeast wind around 5 mph.
Wednesday Night
Clear, with a low around 59. East northeast wind around 5 mph becoming south southeast after midnight.
Thursday
Sunny, with a high near 82. South wind around 5 mph.
Thursday Night
Mostly clear, with a low around 62. South wind around 5 mph.
Friday
Mostly sunny, with a high near 81. South southwest wind 5 to 10 mph becoming west in the afternoon.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 58. Northwest wind around 5 mph.
Saturday
Sunny, with a high near 77. Northwest wind 5 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mankato MN
 44.17°N 93.95°W (Elev. 1027 ft)
Last Update:
11:27 pm CDT Aug 16, 2025
Forecast Valid:
1am CDT Aug 17, 2025-6pm CDT Aug 23, 2025
 
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