Extreme Heat in the Southwest; Severe Weather in the Northern Plains; Heavy Rain in the East

Extreme heat continues across the Southwest as temperatures may top 120 degrees. The heat may expand across the West and south-central U.S. into the middle of the month. Severe thunderstorms capable of severe wind gusts and large hail will be the primary hazards today across the northern Plains into the upper Midwest. Rainfall could be locally heavy across the Eastern U.S. today. Read More >

Hazardous Weather Conditions

Current conditions at

Wittman Regional Airport (KOSH)

Lat: 43.97°NLon: 88.56°WElev: 801ft.

Fair

65°F

18°C

Humidity 87%
Wind Speed S 9 mph
Barometer 29.97 in (1013.7 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 4 Aug 1:53 am CDT
Extended Forecast for

3 Miles S Green Lake WI

  • Overnight

    Overnight: Mostly clear, with a low around 63. South wind around 10 mph.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 2pm.  Partly sunny, with a high near 82. South wind 10 to 15 mph.

    High: 82 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 4am, then a chance of showers.  Mostly cloudy, with a low around 61. West wind 5 to 10 mph.  Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before 11am.  Cloudy, then gradually becoming mostly sunny, with a high near 77. Northwest wind around 5 mph becoming calm.

    High: 77 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 10 percent chance of showers and thunderstorms before 7pm.  Mostly cloudy, with a low around 57. Southwest wind around 5 mph becoming calm.

    Low: 57 °F

    Slight Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 79. Calm wind becoming south around 5 mph.

    High: 79 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 57. South wind around 5 mph.

    Low: 57 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82. Southwest wind 5 to 10 mph.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 63. South wind around 10 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 82. South wind 10 to 15 mph.
Tuesday Night
Showers and thunderstorms likely before 4am, then a chance of showers. Mostly cloudy, with a low around 61. West wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 30 percent chance of showers, mainly before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 77. Northwest wind around 5 mph becoming calm.
Wednesday Night
A 10 percent chance of showers and thunderstorms before 7pm. Mostly cloudy, with a low around 57. Southwest wind around 5 mph becoming calm.
Thursday
Sunny, with a high near 79. Calm wind becoming south around 5 mph.
Thursday Night
Mostly clear, with a low around 57. South wind around 5 mph.
Friday
Sunny, with a high near 82. Southwest wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 62.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 84.
Sunday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 63.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Green Lake WI
 43.81°N 88.97°W (Elev. 850 ft)
2:36 am CDT Aug 4, 2026
2am CDT Aug 4, 2026-6pm CDT Aug 10, 2026
 
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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