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° N Lon: 90.44° W Elev: 1020 ft.

Mostly Cloudy

10°F

-12°C

Humidity 78%
Wind Speed W 20 G 25 mph
Barometer 29.89 in
Dewpoint 4°F (-16°C)
Visibility 7.00 mi
Wind Chill-9°F (-23°C)
Last update 18 Jan 10:55 pm CST
Detailed forecast for

Grant County

Overnight
Mostly cloudy. A slight chance of snow late this evening. Patchy blowing snow. Blustery, cold with lows around 7 below. Northwest winds 20 to 25 mph with gusts up to 40 mph. Chance of snow 20 percent. Wind chill values as low as 30 below.
Martin Luther King Jr Day
Partly sunny. Colder with highs around 4 above. West winds 10 to 20 mph with gusts up to 30 mph. Wind chill values as low as 30 below in the morning.
Monday Night
Partly cloudy. Cold with lows around 4 below. West winds 5 to 10 mph. Wind chill values as low as 15 below.
Tuesday
Not as cold. Mostly sunny. Highs around 16. Southwest winds 5 to 10 mph.
Tuesday Night
Not as cold. Mostly cloudy. A chance of snow in the evening, then snow likely after midnight. Snow accumulation around an inch possible. Near steady temperature around 14. South winds 5 to 10 mph. Chance of snow 60 percent.
Wednesday
Partly sunny. Highs in the lower 20s.
Wednesday Night And Thursday
Partly cloudy. Lows zero to 5 above zero. Highs 10 to 15.
Thursday Night And Friday
Mostly cloudy. Lows around zero. Highs around 10 above.
Friday Night
Cold. Partly cloudy. Lows around 10 below.
Saturday And Saturday Night
Mostly cloudy. Highs zero to 5 above zero. Lows around 10 below.
Sunday
Mostly sunny. Highs 5 to 10 above.



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1102 PM CST Sun Jan 18 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database