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

Platteville Municipal Airport (KPVB)

Lat: 42.69°NLon: 90.44°WElev: 1020ft.

Mostly Cloudy

83°F

28°C

Humidity 66%
Wind Speed Calm
Barometer 29.96 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 10 Aug 3:55 pm CDT
Extended Forecast for

Lancaster WI

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 11pm, then a chance of showers after 5am. Mostly cloudy, with a low around 69. East wind around 6 mph. Chance of precipitation is 30%.

    Low: 69 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly before 11am. Some of the storms could produce heavy rainfall. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 81. East wind 5 to 9 mph becoming light in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 81 °F

    Heavy Rain
    and Patchy
    Fog then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 4am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 67. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 67 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms. Partly sunny, with a high near 82. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 30%.

    High: 82 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 66. Light northeast wind.

    Low: 66 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 78. East wind 3 to 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 78 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 63. Northeast wind 3 to 7 mph.

    Low: 63 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 75. East wind 9 to 11 mph. Chance of precipitation is 30%.

    High: 75 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. East wind 10 to 14 mph. Chance of precipitation is 70%.

    Low: 61 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 11pm, then a chance of showers after 5am. Mostly cloudy, with a low around 69. East wind around 6 mph. Chance of precipitation is 30%.
Tuesday
Showers and thunderstorms likely, mainly before 11am. Some of the storms could produce heavy rainfall. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 81. East wind 5 to 9 mph becoming light in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night
A slight chance of showers and thunderstorms before 4am, then a slight chance of showers after 5am. Mostly cloudy, with a low around 67. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Light and variable wind becoming south around 6 mph in the morning. Chance of precipitation is 30%.
Wednesday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 66. Light northeast wind.
Thursday
Showers likely, with thunderstorms also possible after 10am. Mostly cloudy, with a high near 78. East wind 3 to 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 63. Northeast wind 3 to 7 mph.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 75. East wind 9 to 11 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 61. East wind 10 to 14 mph. Chance of precipitation is 70%.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 77. Southeast wind around 10 mph becoming south in the afternoon.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Southwest wind 5 to 8 mph becoming northwest after midnight. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers. Mostly cloudy, with a high near 76. Northwest wind 6 to 8 mph.
Sunday Night
Partly cloudy, with a low around 61. Northwest wind around 6 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 75. Light and variable wind becoming northeast around 6 mph in the morning.
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ABOUT THIS FORECAST

 
Point Forecast:
Lancaster WI
 42.85°N 90.71°W
Last Update:
1:26 pm CDT Aug 10, 2026
Forecast Valid:
4pm CDT Aug 10, 2026-6pm CDT Aug 17, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation