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

41°F

5°C

Humidity 100%
Wind Speed Calm
Barometer 29.84 in
Dewpoint 41°F (5°C)
Visibility 9.00 mi
Last update 16 Feb 5:15 am CST
Extended Forecast for

Portsmouth IA

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 64. South wind 6 to 10 mph.

    High: 64 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 45. Southeast wind 5 to 10 mph, with gusts as high as 16 mph.

    Low: 45 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A slight chance of drizzle before noon. Cloudy through mid morning, then gradual clearing, with a high near 71. Breezy, with a south southeast wind 11 to 16 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph.

    High: 71 °F

    Breezy.
    Slight Chance
    Drizzle then
    Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain before midnight. Mostly clear during the early evening, then becoming mostly cloudy, with a low around 41. Breezy, with a south wind 11 to 21 mph becoming west after midnight. Winds could gust as high as 29 mph.

    Low: 41 °F

    Chance Rain
    and Breezy
    then Partly
    Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 60. West wind 10 to 17 mph, with gusts as high as 25 mph.

    High: 60 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after midnight. Partly cloudy, with a low around 30. West northwest wind 7 to 11 mph becoming northeast after midnight. Winds could gust as high as 20 mph.

    Low: 30 °F

    Partly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: A chance of rain and snow. Partly sunny, with a high near 44. Breezy, with a northeast wind 13 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    High: 44 °F

    Chance
    Rain/Snow and
    Breezy

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 19. North northwest wind 11 to 16 mph, with gusts as high as 26 mph.

    Low: 19 °F

    Chance Snow

  • Friday

    Friday: Partly sunny, with a high near 35. Northwest wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 35 °F

    Partly Sunny

Detailed Forecast

Washington's Birthday
Mostly sunny, with a high near 64. South wind 6 to 10 mph.
Tonight
Increasing clouds, with a low around 45. Southeast wind 5 to 10 mph, with gusts as high as 16 mph.
Tuesday
A slight chance of drizzle before noon. Cloudy through mid morning, then gradual clearing, with a high near 71. Breezy, with a south southeast wind 11 to 16 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 37 mph.
Tuesday Night
A 40 percent chance of rain before midnight. Mostly clear during the early evening, then becoming mostly cloudy, with a low around 41. Breezy, with a south wind 11 to 21 mph becoming west after midnight. Winds could gust as high as 29 mph.
Wednesday
Sunny, with a high near 60. West wind 10 to 17 mph, with gusts as high as 25 mph.
Wednesday Night
A 20 percent chance of rain after midnight. Partly cloudy, with a low around 30. West northwest wind 7 to 11 mph becoming northeast after midnight. Winds could gust as high as 20 mph.
Thursday
A chance of rain and snow. Partly sunny, with a high near 44. Breezy, with a northeast wind 13 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 19. North northwest wind 11 to 16 mph, with gusts as high as 26 mph.
Friday
Partly sunny, with a high near 35. Northwest wind 8 to 11 mph, with gusts as high as 18 mph.
Friday Night
A slight chance of snow after midnight. Mostly cloudy, with a low around 18. North northwest wind around 7 mph.
Saturday
A slight chance of snow. Partly sunny, with a high near 39. Northwest wind 7 to 13 mph, with gusts as high as 20 mph.
Saturday Night
A slight chance of snow. Partly cloudy, with a low around 14. North northwest wind 8 to 10 mph, with gusts as high as 16 mph.
Sunday
Mostly sunny, with a high near 33. North northwest wind 9 to 13 mph, with gusts as high as 18 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth IA
 41.65°N 95.5°W (Elev. 1319 ft)
Last Update:
4:42 am CST Feb 16, 2026
Forecast Valid:
5am CST Feb 16, 2026-6pm CST Feb 22, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation