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

48°F

9°C

Humidity 32%
Wind Speed SW 10 mph
Barometer 30.24 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 11 Feb 4:15 pm CST
Extended Forecast for

Portsmouth IA

  • Tonight

    Tonight: A slight chance of rain and snow between 9pm and 3am. Mostly cloudy, with a low around 33. South wind around 6 mph. Chance of precipitation is 20%.

    Low: 33 °F

    Slight Chance
    Rain/Snow

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 53. South wind 5 to 9 mph becoming light south southeast in the afternoon.

    High: 53 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28. Calm wind.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 56. Calm wind becoming south southwest around 5 mph.

    High: 56 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 36. Calm wind becoming south around 5 mph.

    Low: 36 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 58. Calm wind becoming south southwest 5 to 7 mph in the morning.

    High: 58 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 33. Light and variable wind.

    Low: 33 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 60. Calm wind becoming south 5 to 8 mph in the morning.

    High: 60 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 40. South wind 7 to 10 mph, with gusts as high as 17 mph.

    Low: 40 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of rain and snow between 9pm and 3am. Mostly cloudy, with a low around 33. South wind around 6 mph. Chance of precipitation is 20%.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 53. South wind 5 to 9 mph becoming light south southeast in the afternoon.
Thursday Night
Mostly clear, with a low around 28. Calm wind.
Friday
Sunny, with a high near 56. Calm wind becoming south southwest around 5 mph.
Friday Night
Mostly cloudy, with a low around 36. Calm wind becoming south around 5 mph.
Saturday
Mostly cloudy, with a high near 58. Calm wind becoming south southwest 5 to 7 mph in the morning.
Saturday Night
Mostly clear, with a low around 33. Light and variable wind.
Sunday
Sunny, with a high near 60. Calm wind becoming south 5 to 8 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 40. South wind 7 to 10 mph, with gusts as high as 17 mph.
Washington's Birthday
Mostly cloudy, with a high near 61. South wind 9 to 16 mph, with gusts as high as 23 mph.
Monday Night
Mostly cloudy, with a low around 45. South southeast wind around 10 mph, with gusts as high as 18 mph.
Tuesday
Partly sunny, with a high near 66. South wind 11 to 17 mph, with gusts as high as 26 mph.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 41. South southwest wind 10 to 14 mph becoming west after midnight. Winds could gust as high as 21 mph.
Wednesday
Sunny, with a high near 56. West northwest wind 10 to 13 mph, with gusts as high as 20 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth IA
 41.65°N 95.5°W (Elev. 1319 ft)
Last Update:
3:35 pm CST Feb 11, 2026
Forecast Valid:
4pm CST Feb 11, 2026-6pm CST Feb 18, 2026
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation