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

64°F

18°C

Humidity 52%
Wind Speed N 8 mph
Barometer 30.34 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 4 Oct 11:15 am CDT
Extended Forecast for

Portsmouth IA

  • Today

    Today: Sunny, with a high near 70. North northwest wind around 7 mph.

    High: 70 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 47. Calm wind.

    Low: 47 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 71. Light south southeast wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 17 mph.

    High: 71 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 55. South wind 7 to 10 mph, with gusts as high as 18 mph.

    Low: 55 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 76. South southwest wind 7 to 10 mph, with gusts as high as 17 mph.

    High: 76 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 73. Calm wind becoming north northeast around 5 mph in the afternoon.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 72. Southeast wind 3 to 8 mph.

    High: 72 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 70. North northwest wind around 7 mph.
Tonight
Clear, with a low around 47. Calm wind.
Monday
Sunny, with a high near 71. Light south southeast wind becoming south 6 to 11 mph in the morning. Winds could gust as high as 17 mph.
Monday Night
Clear, with a low around 55. South wind 7 to 10 mph, with gusts as high as 18 mph.
Tuesday
Sunny, with a high near 76. South southwest wind 7 to 10 mph, with gusts as high as 17 mph.
Tuesday Night
Mostly clear, with a low around 57. Calm wind.
Wednesday
Sunny, with a high near 73. Calm wind becoming north northeast around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 56. Calm wind.
Thursday
Mostly sunny, with a high near 72. Southeast wind 3 to 8 mph.
Thursday Night
Partly cloudy, with a low around 56. Light east wind.
Friday
Sunny, with a high near 71. East southeast wind 5 to 9 mph.
Friday Night
Mostly clear, with a low around 60. South southeast wind 7 to 11 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 76. Breezy, with a south wind 13 to 20 mph, with gusts as high as 28 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth IA
 41.65°N 95.53°W (Elev. 1250 ft)
Last Update:
10:35 am CDT Oct 4, 2026
Forecast Valid:
11am CDT Oct 4, 2026-6pm CDT Oct 10, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation