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

Strong to Severe Thunderstorms in the East; Heat in the Central and Western U.S.

Strong to potentially severe thunderstorms with damaging wind gusts are forecast Thursday from parts of New England into the Mid Atlantic and Carolinas. Significant heat will expand across the West and Central Plains through Friday, potentially breaking daily high temperature records. Dangerous heat will then build into the Eastern U.S. this weekend through much of next week. Read More >

Hazardous Weather Conditions

Current conditions at

Platteville Municipal Airport (KPVB)

Lat: 42.69°NLon: 90.44°WElev: 1020ft.

Mostly Cloudy

65°F

18°C

Humidity 100%
Wind Speed Calm
Barometer 29.81 in
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 18 Jun 9:15 pm CDT
Extended Forecast for

Potosi WI

Extreme Heat Watch June 21, 12:00pm until June 22, 09:00pm
Click here for hazard details and duration
Extreme Heat Watch

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 63. Northwest wind around 6 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Chance
    T-storms

  • Juneteenth

    Juneteenth: Sunny, with a high near 85. Northwest wind 6 to 9 mph.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. West wind 5 to 7 mph becoming south in the evening.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 86. Breezy, with a south wind 9 to 17 mph, with gusts as high as 26 mph.

    High: 86 °F

    Slight Chance
    T-storms and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 76. Breezy, with a south wind around 17 mph, with gusts as high as 28 mph.

    Low: 76 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Sunny and hot, with a high near 95. Breezy, with a south wind 17 to 20 mph, with gusts as high as 31 mph.

    High: 95 °F

    Hot and
    Breezy

  • Saturday Night

    Saturday Night: Clear, with a low around 78. Breezy, with a south wind 14 to 16 mph, with gusts as high as 26 mph.

    Low: 78 °F

    Clear and
    Breezy then
    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 95. Breezy, with a south wind 14 to 20 mph, with gusts as high as 30 mph.

    High: 95 °F

    Hot and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 78. Breezy, with a south wind 14 to 17 mph, with gusts as high as 26 mph.

    Low: 78 °F

    Clear and
    Breezy then
    Mostly Clear

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 63. Northwest wind around 6 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Juneteenth
Sunny, with a high near 85. Northwest wind 6 to 9 mph.
Thursday Night
Mostly clear, with a low around 66. West wind 5 to 7 mph becoming south in the evening.
Friday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly cloudy, then gradually becoming sunny, with a high near 86. Breezy, with a south wind 9 to 17 mph, with gusts as high as 26 mph.
Friday Night
Mostly clear, with a low around 76. Breezy, with a south wind around 17 mph, with gusts as high as 28 mph.
Saturday
Sunny and hot, with a high near 95. Breezy, with a south wind 17 to 20 mph, with gusts as high as 31 mph.
Saturday Night
Clear, with a low around 78. Breezy, with a south wind 14 to 16 mph, with gusts as high as 26 mph.
Sunday
Sunny and hot, with a high near 95. Breezy, with a south wind 14 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Clear, with a low around 78. Breezy, with a south wind 14 to 17 mph, with gusts as high as 26 mph.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. Southwest wind 11 to 14 mph, with gusts as high as 22 mph.
Monday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Southwest wind 6 to 10 mph.
Tuesday
Showers and thunderstorms likely. Partly sunny, with a high near 90. Southwest wind 7 to 9 mph. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 70. Southeast wind around 7 mph. Chance of precipitation is 70%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 85. Southwest wind 7 to 9 mph. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Potosi WI
 42.69°N 90.72°W
Last Update:
7:58 pm CDT Jun 18, 2025
Forecast Valid:
9pm CDT Jun 18, 2025-6pm CDT Jun 25, 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