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

Harlan, Harlan Municipal Airport (KHNR)

Lat: 41.58°NLon: 95.34°WElev: 1230ft.

Fair

12°F

-11°C

Humidity 62%
Wind Speed NW 8 mph
Barometer 30.26 in
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 27 Jan 6:55 am CST
Extended Forecast for

Portsmouth IA

  • Today

    Today: Sunny, with a high near 20. Northwest wind 7 to 15 mph, with gusts as high as 23 mph.

    High: 20 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 6. Northwest wind around 5 mph becoming calm in the evening.

    Low: 6 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 27. Calm wind becoming north northwest 5 to 8 mph in the afternoon.

    High: 27 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 7. Northeast wind 3 to 5 mph.

    Low: 7 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, with a high near 19. North wind 3 to 6 mph.

    High: 19 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -1. North northeast wind 5 to 7 mph.

    Low: -1 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 13. North northeast wind 7 to 10 mph, with gusts as high as 16 mph.

    High: 13 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around -4. North wind around 6 mph becoming calm in the evening.

    Low: -4 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 19. Calm wind becoming southwest 5 to 9 mph in the morning.

    High: 19 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 20. Northwest wind 7 to 15 mph, with gusts as high as 23 mph.
Tonight
Partly cloudy, with a low around 6. Northwest wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 27. Calm wind becoming north northwest 5 to 8 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 7. Northeast wind 3 to 5 mph.
Thursday
Mostly cloudy, with a high near 19. North wind 3 to 6 mph.
Thursday Night
Partly cloudy, with a low around -1. North northeast wind 5 to 7 mph.
Friday
Sunny, with a high near 13. North northeast wind 7 to 10 mph, with gusts as high as 16 mph.
Friday Night
Mostly clear, with a low around -4. North wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 19. Calm wind becoming southwest 5 to 9 mph in the morning.
Saturday Night
A chance of snow, mainly after midnight. Mostly cloudy, with a low around 9. South wind around 8 mph.
Sunday
A slight chance of snow. Partly sunny, with a high near 31. South wind 8 to 11 mph becoming west in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Mostly cloudy, with a low around 16. West wind 5 to 7 mph.
Monday
Partly sunny, with a high near 35. West wind 5 to 8 mph becoming south southeast in the afternoon.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth IA
 41.65°N 95.5°W (Elev. 1319 ft)
Last Update:
6:35 am CST Jan 27, 2026
Forecast Valid:
7am CST Jan 27, 2026-6pm CST Feb 2, 2026
 
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Additional Resources

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Chance of Precipitation