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 >

Hazardous Weather Conditions

Current conditions at

New Ulm Municipal Airport (KULM)

Lat: 44.32°NLon: 94.5°WElev: 1001ft.

Fair

73°F

23°C

Humidity 78%
Wind Speed E 15 G 20 mph
Barometer 30.00 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 17 Aug 1:22 pm CDT
Extended Forecast for

4 Miles NNE New Ulm MN

  • This Afternoon

    This Afternoon: A 30 percent chance of showers, mainly before 2pm.  Mostly cloudy, with a high near 81. East southeast wind 10 to 15 mph.

    High: 81 °F

    Chance
    Showers

  • Tonight

    Tonight: Showers and thunderstorms likely before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am.  Mostly cloudy, with a low around 71. Southeast wind 5 to 15 mph.  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 30 percent chance of showers and thunderstorms before 8am.  Partly sunny, with a high near 82. South wind 5 to 10 mph becoming west northwest in the afternoon.

    High: 82 °F

    Chance
    T-storms then
    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64. North northwest wind 5 to 10 mph.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80. North wind around 5 mph.

    High: 80 °F

    Mostly Sunny

  • Tuesday Night

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

    Low: 60 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 80. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 80 °F

    Sunny

  • Wednesday Night

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

    Low: 59 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 81. Light south wind increasing to 5 to 10 mph in the morning.

    High: 81 °F

    Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers, mainly before 2pm. Mostly cloudy, with a high near 81. East southeast wind 10 to 15 mph.
Tonight
Showers and thunderstorms likely before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 71. Southeast wind 5 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Monday
A 30 percent chance of showers and thunderstorms before 8am. Partly sunny, with a high near 82. South wind 5 to 10 mph becoming west northwest in the afternoon.
Monday Night
Partly cloudy, with a low around 64. North northwest wind 5 to 10 mph.
Tuesday
Mostly sunny, with a high near 80. North wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 60. North wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 80. Calm wind becoming east northeast around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 59. East wind around 5 mph becoming south southeast after midnight.
Thursday
Sunny, with a high near 81. Light south wind increasing to 5 to 10 mph in the morning.
Thursday Night
Mostly clear, with a low around 62. South wind around 5 mph.
Friday
Mostly sunny, with a high near 80. South southwest wind 5 to 10 mph becoming northwest in the afternoon.
Friday Night
Mostly clear, with a low around 57. Northwest wind around 5 mph.
Saturday
Sunny, with a high near 75. Northwest wind 5 to 10 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE New Ulm MN
 44.36°N 94.43°W (Elev. 997 ft)
12:48 pm CDT Aug 17, 2025
1pm CDT Aug 17, 2025-6pm CDT Aug 23, 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