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.

Fair

32°F

0°C

Humidity 55%
Wind Speed E 14 mph
Barometer 30.33 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 1 Mar 1:55 pm CST
Extended Forecast for

Portsmouth IA

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 33. East wind around 11 mph, with gusts as high as 18 mph.

    High: 33 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 24. East southeast wind 6 to 8 mph, with gusts as high as 16 mph.

    Low: 24 °F

    Mostly Cloudy

  • Monday

    Monday: Cloudy, with a high near 44. South southeast wind 7 to 10 mph, with gusts as high as 16 mph.

    High: 44 °F

    Cloudy

  • Monday Night

    Monday Night: A 50 percent chance of rain after midnight. Cloudy, with a low around 33. Southeast wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 33 °F

    Cloudy then
    Chance Rain

  • Tuesday

    Tuesday: A 40 percent chance of rain. Mostly cloudy, with a high near 48. Northeast wind 5 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 35. Northeast wind 6 to 8 mph. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 35 °F

    Chance Rain

  • Wednesday

    Wednesday: A chance of rain and thunderstorms. Partly sunny, with a high near 49. Northeast wind 5 to 7 mph. Chance of precipitation is 30%.

    High: 49 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain, mainly after midnight. Partly cloudy, with a low around 33. Light and variable wind.

    Low: 33 °F

    Chance Rain

  • Thursday

    Thursday: A slight chance of rain after noon. Mostly sunny, with a high near 66. Light south southeast wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 18 mph.

    High: 66 °F

    Partly Sunny
    then Slight
    Chance Rain

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 33. East wind around 11 mph, with gusts as high as 18 mph.
Tonight
Mostly cloudy, with a low around 24. East southeast wind 6 to 8 mph, with gusts as high as 16 mph.
Monday
Cloudy, with a high near 44. South southeast wind 7 to 10 mph, with gusts as high as 16 mph.
Monday Night
A 50 percent chance of rain after midnight. Cloudy, with a low around 33. Southeast wind around 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 48. Northeast wind 5 to 9 mph. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 35. Northeast wind 6 to 8 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A chance of rain and thunderstorms. Partly sunny, with a high near 49. Northeast wind 5 to 7 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of rain, mainly after midnight. Partly cloudy, with a low around 33. Light and variable wind.
Thursday
A slight chance of rain after noon. Mostly sunny, with a high near 66. Light south southeast wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 18 mph.
Thursday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 43. South southeast wind around 10 mph, with gusts as high as 17 mph.
Friday
Rain likely. Mostly cloudy, with a high near 61. South wind 10 to 16 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph.
Friday Night
A chance of rain. Mostly cloudy, with a low around 26. Northwest wind 6 to 13 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 55. Northwest wind 6 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 17 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:
1:57 pm CST Mar 1, 2026
Forecast Valid:
2pm CST Mar 1, 2026-6pm CST Mar 7, 2026
 
Forecast Discussion
 
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Additional Resources

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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