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.

Partly Cloudy and Breezy

46°F

8°C

Humidity 62%
Wind Speed N 25 G 36 mph
Barometer 30.09 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 22 Mar 2:15 pm CDT
Extended Forecast for

Portsmouth IA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 52. Breezy, with a north wind 20 to 22 mph, with gusts as high as 31 mph.

    High: 52 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 28. North wind 9 to 14 mph becoming light after midnight. Winds could gust as high as 21 mph.

    Low: 28 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of rain after 4pm. Increasing clouds, with a high near 53. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 16 mph.

    High: 53 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Monday Night

    Monday Night: A 10 percent chance of rain before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 34. South wind around 10 mph, with gusts as high as 17 mph.

    Low: 34 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 64. South wind 9 to 11 mph, with gusts as high as 17 mph.

    High: 64 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 45. South southeast wind around 8 mph, with gusts as high as 16 mph.

    Low: 45 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 78. South wind 7 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 16 mph.

    High: 78 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 51. North northwest wind 5 to 8 mph becoming south southeast after midnight.

    Low: 51 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 69. Breezy, with a southwest wind 9 to 14 mph becoming north 16 to 21 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 69 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 52. Breezy, with a north wind 20 to 22 mph, with gusts as high as 31 mph.
Tonight
Mostly clear, with a low around 28. North wind 9 to 14 mph becoming light after midnight. Winds could gust as high as 21 mph.
Monday
A 20 percent chance of rain after 4pm. Increasing clouds, with a high near 53. Light and variable wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 16 mph.
Monday Night
A 10 percent chance of rain before 7pm. Cloudy during the early evening, then gradual clearing, with a low around 34. South wind around 10 mph, with gusts as high as 17 mph.
Tuesday
Partly sunny, with a high near 64. South wind 9 to 11 mph, with gusts as high as 17 mph.
Tuesday Night
Mostly cloudy, with a low around 45. South southeast wind around 8 mph, with gusts as high as 16 mph.
Wednesday
Mostly sunny, with a high near 78. South wind 7 to 10 mph becoming west southwest in the afternoon. Winds could gust as high as 16 mph.
Wednesday Night
Partly cloudy, with a low around 51. North northwest wind 5 to 8 mph becoming south southeast after midnight.
Thursday
Partly sunny, with a high near 69. Breezy, with a southwest wind 9 to 14 mph becoming north 16 to 21 mph in the afternoon. Winds could gust as high as 29 mph.
Thursday Night
A slight chance of rain and snow before 1am, then a slight chance of snow. Mostly cloudy, with a low around 27. Blustery, with a north wind 14 to 18 mph, with gusts as high as 25 mph.
Friday
Mostly sunny, with a high near 48. North wind around 11 mph, with gusts as high as 18 mph.
Friday Night
Mostly clear, with a low around 26. North northwest wind 5 to 8 mph becoming south southeast after midnight.
Saturday
Mostly sunny, with a high near 56. South southwest wind 6 to 14 mph, with gusts as high as 21 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:
2:26 pm CDT Mar 22, 2026
Forecast Valid:
2pm CDT Mar 22, 2026-6pm CDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation