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

Hazardous Weather Conditions

Current conditions at

Harlan, Harlan Municipal Airport (KHNR)

Lat: 41.58°NLon: 95.34°WElev: 1230ft.

Fair

32°F

0°C

Humidity 93%
Wind Speed N 5 mph
Barometer 29.73 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 25 Feb 3:55 am CST
Extended Forecast for

Portsmouth IA

  • Today

    Today: A slight chance of flurries before 11am, then a slight chance of snow after 4pm. Mostly cloudy, with a high near 38. Calm wind becoming east 5 to 7 mph in the morning. Chance of precipitation is 20%.

    High: 38 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Tonight

    Tonight: A 40 percent chance of snow, mainly before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 23. East wind around 6 mph becoming light and variable.

    Low: 23 °F

    Chance Snow
    then Mostly
    Cloudy

  • Thursday

    Thursday: Partly sunny, then gradually becoming sunny, with a high near 52. Southwest wind 5 to 11 mph, with gusts as high as 17 mph.

    High: 52 °F

    Becoming
    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30. South southwest wind 5 to 7 mph.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 62. South southwest wind 7 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 18 mph.

    High: 62 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 24. Northwest wind 6 to 15 mph becoming northeast after midnight. Winds could gust as high as 23 mph.

    Low: 24 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 38. Northeast wind 15 to 17 mph, with gusts as high as 25 mph.

    High: 38 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of snow after midnight. Partly cloudy, with a low around 17. Northeast wind 10 to 14 mph, with gusts as high as 20 mph.

    Low: 17 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A chance of snow. Cloudy, with a high near 28. East wind around 11 mph, with gusts as high as 18 mph.

    High: 28 °F

    Chance Snow

Detailed Forecast

Today
A slight chance of flurries before 11am, then a slight chance of snow after 4pm. Mostly cloudy, with a high near 38. Calm wind becoming east 5 to 7 mph in the morning. Chance of precipitation is 20%.
Tonight
A 40 percent chance of snow, mainly before 10pm. Cloudy, then gradually becoming partly cloudy, with a low around 23. East wind around 6 mph becoming light and variable.
Thursday
Partly sunny, then gradually becoming sunny, with a high near 52. Southwest wind 5 to 11 mph, with gusts as high as 17 mph.
Thursday Night
Mostly clear, with a low around 30. South southwest wind 5 to 7 mph.
Friday
Sunny, with a high near 62. South southwest wind 7 to 10 mph becoming northwest in the afternoon. Winds could gust as high as 18 mph.
Friday Night
Mostly clear, with a low around 24. Northwest wind 6 to 15 mph becoming northeast after midnight. Winds could gust as high as 23 mph.
Saturday
Mostly sunny, with a high near 38. Northeast wind 15 to 17 mph, with gusts as high as 25 mph.
Saturday Night
A slight chance of snow after midnight. Partly cloudy, with a low around 17. Northeast wind 10 to 14 mph, with gusts as high as 20 mph.
Sunday
A chance of snow. Cloudy, with a high near 28. East wind around 11 mph, with gusts as high as 18 mph.
Sunday Night
A chance of snow, mainly before midnight. Mostly cloudy, with a low around 17. East northeast wind 7 to 10 mph, with gusts as high as 16 mph.
Monday
A slight chance of snow. Mostly cloudy, with a high near 34. East wind 8 to 11 mph, with gusts as high as 18 mph.
Monday Night
A chance of snow. Mostly cloudy, with a low around 20. East wind 6 to 8 mph becoming south southeast after midnight.
Tuesday
A chance of snow. Partly sunny, with a high near 44. South southeast wind 6 to 10 mph becoming northwest in the afternoon.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth IA
 41.65°N 95.5°W (Elev. 1319 ft)
Last Update:
3:35 am CST Feb 25, 2026
Forecast Valid:
4am CST Feb 25, 2026-6pm CST Mar 3, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation