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

Hazardous Weather Conditions

Current conditions at

Appleton-Outagamie (KATW)

Lat: 44.26°NLon: 88.52°WElev: 869ft.

Mostly Cloudy

88°F

31°C

Humidity 66%
Wind Speed Calm
Barometer 29.96 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 1 Sep 11:45 am CDT
Extended Forecast for

Appleton WI

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 89. Heat index values as high as 94. West southwest wind 5 to 7 mph.

    High: 89 °F

    Mostly Sunny

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly after 3am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 69. Southwest wind around 5 mph becoming calm in the evening.

    Low: 69 °F

    Mostly Cloudy
    then Chance
    T-storms and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 5pm. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 83. Heat index values as high as 87. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    T-storms and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: A 10 percent chance of showers and thunderstorms before 7pm. Widespread fog after 1am. Otherwise, partly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Slight Chance
    T-storms then
    Fog

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 4pm. Widespread fog, mainly before 9am. Otherwise, partly sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers and
    Fog

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.

    Low: 68 °F

    Chance
    T-storms

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 82.

    High: 82 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 89. Heat index values as high as 94. West southwest wind 5 to 7 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly after 3am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 69. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 5pm. Patchy fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 83. Heat index values as high as 87. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 30%.
Wednesday Night
A 10 percent chance of showers and thunderstorms before 7pm. Widespread fog after 1am. Otherwise, partly cloudy, with a low around 66. Calm wind.
Thursday
A chance of showers, with thunderstorms also possible after 4pm. Widespread fog, mainly before 9am. Otherwise, partly sunny, with a high near 82. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 70%.
Friday
A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 84.
Friday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Saturday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 82.
Saturday Night
A 40 percent chance of showers. Partly cloudy, with a low around 67.
Sunday
A 30 percent chance of showers. Mostly sunny, with a high near 82.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 63.
Labor Day
A 20 percent chance of showers. Partly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Appleton WI
 44.27°N 88.43°W (Elev. 797 ft)
Last Update:
11:12 am CDT Sep 1, 2026
Forecast Valid:
12pm CDT Sep 1, 2026-6pm CDT Sep 7, 2026
 
Forecast Discussion
 
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Additional Resources

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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