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

Chippewa Valley Regional Airport (KEAU)

Lat: 44.87°NLon: 91.49°WElev: 886ft.

Mostly Cloudy

67°F

19°C

Humidity 97%
Wind Speed NE 7 mph
Barometer 30.05 in (1017.3 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 17 Aug 1:56 am CDT
Extended Forecast for

Altoona WI

  • Overnight

    Overnight: Patchy fog before 3am. Otherwise, mostly cloudy, with a low around 66. East northeast wind around 5 mph.

    Low: 66 °F

    Patchy Fog

  • Sunday

    Sunday: A slight chance of showers and thunderstorms between 4pm and 5pm. Partly sunny, with a high near 78. East wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 78 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Increasing clouds, with a low around 64. East southeast wind around 10 mph. New rainfall amounts between a quarter and half of an inch possible.

    Low: 64 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Monday

    Monday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. Southeast wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 84 °F

    Showers
    Likely

  • Monday Night

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

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 78. North wind around 5 mph.

    High: 78 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 57. North wind around 5 mph becoming calm in the evening.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79. Calm wind becoming northeast around 5 mph.

    High: 79 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 58. Calm wind.

    Low: 58 °F

    Clear

Detailed Forecast

Overnight
Patchy fog before 3am. Otherwise, mostly cloudy, with a low around 66. East northeast wind around 5 mph.
Sunday
A slight chance of showers and thunderstorms between 4pm and 5pm. Partly sunny, with a high near 78. East wind 5 to 10 mph. Chance of precipitation is 20%.
Sunday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Increasing clouds, with a low around 64. East southeast wind around 10 mph. New rainfall amounts between a quarter and half of an inch possible.
Monday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 84. Southeast wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Partly cloudy, with a low around 64. North northwest wind around 5 mph.
Tuesday
Partly sunny, with a high near 78. North wind around 5 mph.
Tuesday Night
Mostly clear, with a low around 57. North wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 79. Calm wind becoming northeast around 5 mph.
Wednesday Night
Clear, with a low around 58. Calm wind.
Thursday
Sunny, with a high near 82. Calm wind becoming south around 5 mph.
Thursday Night
Mostly clear, with a low around 61. South wind around 5 mph becoming calm.
Friday
Mostly sunny, with a high near 82. Calm wind becoming west southwest around 5 mph in the morning.
Friday Night
Mostly clear, with a low around 59. West wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 77. West northwest wind around 5 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Altoona WI
 44.8°N 91.44°W (Elev. 850 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