Blizzard Conditions Are Forecast Across Parts of the Northern Plains and Upper Great Lakes

In the north-central U.S., a strong storm will continue to bring heavy snow and gusty to high winds over parts of the northern Plains and Upper Midwest tonight before moving across the Great Lakes with heavy lake effect snow Wednesday into Thanksgiving Day. Read More >

Hazardous Weather Conditions

Current conditions at

Harlan, Harlan Municipal Airport (KHNR)

Lat: 41.58°NLon: 95.34°WElev: 1230ft.

Overcast and Windy

32°F

0°C

Humidity 69%
Wind Speed NW 28 G 35 mph
Barometer 30.10 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 26 Nov 1:15 am CST
Extended Forecast for

Portsmouth IA

  • Overnight

    Overnight: Mostly cloudy, with a low around 24. Windy, with a northwest wind 24 to 28 mph, with gusts as high as 43 mph.

    Low: 24 °F

    Mostly Cloudy
    and Windy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 35. Breezy, with a northwest wind 19 to 24 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 35 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming clear, with a low around 15. Northwest wind 5 to 9 mph.

    Low: 15 °F

    Decreasing
    Clouds

  • Thanksgiving Day

    Thanksgiving Day: Sunny, with a high near 34. Light northwest wind increasing to 5 to 9 mph in the morning.

    High: 34 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 15. Light and variable wind.

    Low: 15 °F

    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of snow after noon.  Cloudy, with a high near 30. Light east southeast wind becoming southeast 6 to 11 mph in the morning. Winds could gust as high as 18 mph.

    High: 30 °F

    Mostly Cloudy
    then Chance
    Snow

  • Friday Night

    Friday Night: Snow likely.  Cloudy, with a low around 23. East southeast wind 7 to 10 mph, with gusts as high as 17 mph.  Chance of precipitation is 70%.

    Low: 23 °F

    Snow Likely

  • Saturday

    Saturday: Snow likely, mainly before noon.  Cloudy, with a high near 28. East northeast wind 7 to 14 mph becoming north northwest in the afternoon. Winds could gust as high as 22 mph.

    High: 28 °F

    Snow Likely

  • Saturday Night

    Saturday Night: A slight chance of snow before midnight.  Mostly cloudy, with a low around 8. North northwest wind 9 to 13 mph, with gusts as high as 18 mph.

    Low: 8 °F

    Slight Chance
    Snow then
    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 24. Windy, with a northwest wind 24 to 28 mph, with gusts as high as 43 mph.
Wednesday
Mostly sunny, with a high near 35. Breezy, with a northwest wind 19 to 24 mph decreasing to 13 to 18 mph in the afternoon. Winds could gust as high as 30 mph.
Wednesday Night
Mostly cloudy, then gradually becoming clear, with a low around 15. Northwest wind 5 to 9 mph.
Thanksgiving Day
Sunny, with a high near 34. Light northwest wind increasing to 5 to 9 mph in the morning.
Thursday Night
Partly cloudy, with a low around 15. Light and variable wind.
Friday
A 40 percent chance of snow after noon. Cloudy, with a high near 30. Light east southeast wind becoming southeast 6 to 11 mph in the morning. Winds could gust as high as 18 mph.
Friday Night
Snow likely. Cloudy, with a low around 23. East southeast wind 7 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 70%.
Saturday
Snow likely, mainly before noon. Cloudy, with a high near 28. East northeast wind 7 to 14 mph becoming north northwest in the afternoon. Winds could gust as high as 22 mph.
Saturday Night
A slight chance of snow before midnight. Mostly cloudy, with a low around 8. North northwest wind 9 to 13 mph, with gusts as high as 18 mph.
Sunday
A slight chance of snow after noon. Partly sunny, with a high near 19. North northwest wind 7 to 10 mph, with gusts as high as 16 mph.
Sunday Night
A slight chance of snow. Mostly cloudy, with a low around 2. North northwest wind around 6 mph.
Monday
Partly sunny, with a high near 20. West wind 6 to 9 mph becoming south in the morning.
Monday Night
Mostly cloudy, with a low around 5. South southwest wind around 6 mph becoming west after midnight.
Tuesday
Partly sunny, with a high near 23. West northwest wind 6 to 9 mph becoming south in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth IA
 41.65°N 95.5°W (Elev. 1319 ft)
12:35 am CST Nov 26, 2025
1am CST Nov 26, 2025-6pm CST Dec 2, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database