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

Heat and Fire Weather Concerns West; Heavy Rain and Thunderstorms from Plains to mid-Atlantic

Thunderstorms and locally heavy rainfall is expected from the Central Plains to the Ohio Valley, mid-Atlantic and across the Southeast. Severe weather from the Upper Midwest to Central Plains increases on Friday. Major to Extreme HeatRisk continues across the Southern Plains to the lower Mississippi Valley late this week. Fire weather concerns for the northern Rockies and northern Plains today. Read More >

Current conditions at

Chippewa Valley Regional Airport (KEAU)

Lat: 44.87°NLon: 91.49°WElev: 886ft.

Fair

58°F

14°C

Humidity 93%
Wind Speed SW 3 mph
Barometer 30.07 in (1018.3 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 10 Sep 7:56 am CDT
Extended Forecast for

Altoona WI

  • Today

    Today: Areas of fog before 9am. Otherwise, sunny, with a high near 79. Calm wind becoming west around 5 mph in the afternoon.

    High: 79 °F

    Areas Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. Calm wind becoming south around 5 mph after midnight.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 82. South wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 82 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 63. South wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 76. Northwest wind around 10 mph.

    High: 76 °F

    Chance
    Showers then
    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 50. West northwest wind around 5 mph becoming calm in the evening.

    Low: 50 °F

    Mostly Clear

  • Sunday

    Sunday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 68. Calm wind becoming north around 5 mph in the afternoon.

    High: 68 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 54. Northeast wind 5 to 15 mph. Chance of precipitation is 60%.

    Low: 54 °F

    Chance
    T-storms then
    Heavy Rain

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 72. East southeast wind around 15 mph. Chance of precipitation is 90%.

    High: 72 °F

    Showers

Detailed Forecast

Today
Areas of fog before 9am. Otherwise, sunny, with a high near 79. Calm wind becoming west around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 58. Calm wind becoming south around 5 mph after midnight.
Friday
Mostly sunny, with a high near 82. South wind 5 to 15 mph, with gusts as high as 25 mph.
Friday Night
A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then a chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 63. South wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A 30 percent chance of showers and thunderstorms before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 76. Northwest wind around 10 mph.
Saturday Night
Mostly clear, with a low around 50. West northwest wind around 5 mph becoming calm in the evening.
Sunday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 68. Calm wind becoming north around 5 mph in the afternoon.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Some of the storms could produce heavy rainfall. Mostly cloudy, with a low around 54. Northeast wind 5 to 15 mph. Chance of precipitation is 60%.
Monday
Showers and possibly a thunderstorm. High near 72. East southeast wind around 15 mph. Chance of precipitation is 90%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 52. Southwest wind 10 to 15 mph. Chance of precipitation is 50%.
Tuesday
Partly sunny, with a high near 65. West northwest wind around 10 mph.
Tuesday Night
Partly cloudy, with a low around 47. West northwest wind around 5 mph becoming calm.
Wednesday
Mostly sunny, with a high near 67. Calm wind becoming south southeast around 5 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
Altoona WI
 44.8°N 91.44°W (Elev. 850 ft)
Last Update:
7:06 am CDT Sep 10, 2026
Forecast Valid:
8am CDT Sep 10, 2026-6pm CDT Sep 16, 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