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Hazardous Weather Conditions

Current conditions at

Harlan, Harlan Municipal Airport (KHNR)

Lat: 41.58°NLon: 95.34°WElev: 1230ft.

Fair

16°F

-9°C

Humidity 45%
Wind Speed N 9 mph
Barometer NA
Dewpoint -2°F (-19°C)
Visibility NA
Wind Chill5°F (-15°C)
Last update 22 Jan 6:15 pm CST
Extended Forecast for

Portsmouth IA

Cold Weather Advisory January 23, 12:00am until January 23, 10:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Tonight

    Tonight: Partly cloudy, with a low around -9. Wind chill values as low as -26. North wind around 14 mph, with gusts as high as 22 mph.

    Low: -9 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 0. Wind chill values as low as -28. North wind 6 to 13 mph, with gusts as high as 18 mph.

    High: 0 °F

    Cold

  • Friday Night

    Friday Night: Snow likely, mainly after midnight. Cloudy, with a steady temperature around -2. Wind chill values as low as -15. East northeast wind around 6 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: -2 °F

    Chance Snow
    then Snow
    Likely

  • Saturday

    Saturday: A 40 percent chance of snow, mainly before noon. Cloudy and cold, with a high near 5. Wind chill values as low as -15. East wind 3 to 6 mph.

    High: 5 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of snow. Mostly cloudy, with a low around -4. Light east wind.

    Low: -4 °F

    Slight Chance
    Snow

  • Sunday

    Sunday: Mostly sunny, with a high near 11. North northeast wind 3 to 8 mph.

    High: 11 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -8. North northwest wind around 6 mph becoming west southwest after midnight.

    Low: -8 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 21. South southwest wind 5 to 13 mph, with gusts as high as 20 mph.

    High: 21 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 6. South southwest wind 5 to 9 mph becoming northwest after midnight. Winds could gust as high as 16 mph.

    Low: 6 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around -9. Wind chill values as low as -26. North wind around 14 mph, with gusts as high as 22 mph.
Friday
Mostly cloudy and cold, with a high near 0. Wind chill values as low as -28. North wind 6 to 13 mph, with gusts as high as 18 mph.
Friday Night
Snow likely, mainly after midnight. Cloudy, with a steady temperature around -2. Wind chill values as low as -15. East northeast wind around 6 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday
A 40 percent chance of snow, mainly before noon. Cloudy and cold, with a high near 5. Wind chill values as low as -15. East wind 3 to 6 mph.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around -4. Light east wind.
Sunday
Mostly sunny, with a high near 11. North northeast wind 3 to 8 mph.
Sunday Night
Partly cloudy, with a low around -8. North northwest wind around 6 mph becoming west southwest after midnight.
Monday
Sunny, with a high near 21. South southwest wind 5 to 13 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 6. South southwest wind 5 to 9 mph becoming northwest after midnight. Winds could gust as high as 16 mph.
Tuesday
Mostly sunny, with a high near 24. North northwest wind 5 to 7 mph.
Tuesday Night
Mostly cloudy, with a low around 6. North northwest wind around 6 mph.
Wednesday
Mostly sunny, with a high near 20. North northwest wind 6 to 11 mph, with gusts as high as 17 mph.
Wednesday Night
Mostly cloudy, with a low around 1. North northwest wind around 8 mph.
Thursday
Partly sunny, with a high near 14. North northwest wind 7 to 10 mph, with gusts as high as 16 mph.
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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:
6:11 pm CST Jan 22, 2026
Forecast Valid:
6pm CST Jan 22, 2026-6pm CST Jan 29, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation