Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

Platteville Municipal Airport (KPVB)

Lat: 42.69°NLon: 90.44°WElev: 1020ft.

Overcast

8°F

-13°C

Humidity 70%
Wind Speed W 17 G 24 mph
Barometer 29.92 in
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Wind Chill-10°F (-23°C)
Last update 18 Jan 11:55 pm CST
Extended Forecast for

Lancaster WI

Cold Weather Advisory January 19, 03:00am until January 19, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory
  • Overnight

    Overnight: A 20 percent chance of snow before 1am.  Patchy blowing snow. Mostly cloudy, with a low around -5. Wind chill values as low as -27. Blustery, with a northwest wind around 22 mph, with gusts as high as 36 mph.

    Low: -5 °F

    Slight Chance
    Snow and
    Patchy
    Blowing Snow

  • M.L.King Day

    M.L.King Day: Patchy blowing snow before 9am. Partly sunny and cold, with a high near 3. Wind chill values as low as -28. Blustery, with a northwest wind 13 to 21 mph, with gusts as high as 32 mph.

    High: 3 °F

    Patchy
    Blowing Snow
    and Blustery

  • Monday Night

    Monday Night: Partly cloudy, with a low around -4. Wind chill values as low as -15. West wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: -4 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 16. Wind chill values as low as -15. West wind around 7 mph becoming south in the afternoon.

    High: 16 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Snow likely, mainly after midnight.  Mostly cloudy, with a low around 9. South wind 5 to 7 mph becoming west after midnight.  Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Low: 9 °F

    Snow Likely

  • Wednesday

    Wednesday: A 20 percent chance of snow after noon.  Partly sunny, with a high near 21. West wind 7 to 14 mph, with gusts as high as 22 mph.

    High: 21 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 2. West wind 10 to 13 mph, with gusts as high as 21 mph.

    Low: 2 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 13. West wind 8 to 11 mph, with gusts as high as 20 mph.

    High: 13 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 0. West wind 6 to 8 mph becoming northwest after midnight.

    Low: 0 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of snow before 1am. Patchy blowing snow. Mostly cloudy, with a low around -5. Wind chill values as low as -27. Blustery, with a northwest wind around 22 mph, with gusts as high as 36 mph.
M.L.King Day
Patchy blowing snow before 9am. Partly sunny and cold, with a high near 3. Wind chill values as low as -28. Blustery, with a northwest wind 13 to 21 mph, with gusts as high as 32 mph.
Monday Night
Partly cloudy, with a low around -4. Wind chill values as low as -15. West wind 6 to 10 mph, with gusts as high as 18 mph.
Tuesday
Mostly sunny, with a high near 16. Wind chill values as low as -15. West wind around 7 mph becoming south in the afternoon.
Tuesday Night
Snow likely, mainly after midnight. Mostly cloudy, with a low around 9. South wind 5 to 7 mph becoming west after midnight. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Wednesday
A 20 percent chance of snow after noon. Partly sunny, with a high near 21. West wind 7 to 14 mph, with gusts as high as 22 mph.
Wednesday Night
Partly cloudy, with a low around 2. West wind 10 to 13 mph, with gusts as high as 21 mph.
Thursday
Mostly sunny, with a high near 13. West wind 8 to 11 mph, with gusts as high as 20 mph.
Thursday Night
Mostly cloudy, with a low around 0. West wind 6 to 8 mph becoming northwest after midnight.
Friday
A 20 percent chance of snow. Partly sunny, with a high near 10. Northwest wind 8 to 10 mph.
Friday Night
Partly cloudy, with a low around -8. North wind around 9 mph.
Saturday
Partly sunny and cold, with a high near 2. North wind around 10 mph.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around -11. North wind 7 to 9 mph.
Sunday
A 20 percent chance of snow. Mostly sunny and cold, with a high near 5. West wind 7 to 9 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Lancaster WI
 42.85°N 90.71°W
11:56 pm CST Jan 18, 2026
12am CST Jan 19, 2026-6pm CST Jan 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database