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

75°F

24°C

Humidity 90%
Wind Speed E 10 mph
Barometer 29.97 in (1014.5 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 17 Aug 1:56 am CDT
Extended Forecast for

4 Miles SSW Nicollet 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 71. East northeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 71 °F

    Showers
    Likely

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly cloudy, with a high near 88. Heat index values as high as 97. East southeast wind 10 to 15 mph.

    High: 88 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 72. East southeast wind around 10 mph becoming south after midnight. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.

    Low: 72 °F

    Heavy Rain
    then Showers
    Likely

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87. Heat index values as high as 95. South wind 5 to 10 mph becoming west in the afternoon.

    High: 87 °F

    Chance
    T-storms then
    Chance
    Showers

  • 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 81. North wind around 5 mph.

    High: 81 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 60. North northeast wind around 5 mph becoming calm in the evening.

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 60. East wind around 5 mph becoming calm in the evening.

    Low: 60 °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 71. East northeast wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly cloudy, with a high near 88. Heat index values as high as 97. East southeast wind 10 to 15 mph.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 72. East southeast wind around 10 mph becoming south after midnight. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.
Monday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 87. Heat index values as high as 95. South wind 5 to 10 mph becoming west 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 81. North wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 60. North northeast wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 81. Calm wind becoming east northeast around 5 mph in the afternoon.
Wednesday Night
Clear, with a low around 60. East wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 84. 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 83. 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. West northwest wind around 5 mph.
Saturday
Sunny, with a high near 79. Northwest wind 5 to 10 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Nicollet MN
 44.21°N 94.22°W (Elev. 778 ft)
Last Update:
2:07 am CDT Aug 17, 2025
Forecast Valid:
2am 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