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

46°F

8°C

Humidity 62%
Wind Speed S 13 mph
Barometer 30.11 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 2 Mar 4:35 pm CST
Extended Forecast for

Portsmouth IA

  • Tonight

    Tonight: A chance of drizzle after 3am. Cloudy, with a low around 32. Southeast wind 3 to 6 mph.

    Low: 32 °F

    Cloudy then
    Chance
    Drizzle

  • Tuesday

    Tuesday: A slight chance of drizzle before noon, then a slight chance of rain after 5pm. Patchy fog between 7am and 11am. Otherwise, mostly cloudy, with a high near 51. Calm wind becoming east northeast 5 to 7 mph in the afternoon. Chance of precipitation is 20%.

    High: 51 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 32. East northeast wind 3 to 6 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 32 °F

    Chance Rain

  • Wednesday

    Wednesday: A 30 percent chance of rain, mainly before noon. Mostly sunny, with a high near 51. East northeast wind 3 to 6 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 51 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 35. Light east southeast wind. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 64. Light south southeast wind becoming south 5 to 10 mph in the morning.

    High: 64 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Rain, mainly after midnight. Low around 48. Southeast wind 8 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 80%.

    Low: 48 °F

    Chance Rain
    then Rain

  • Friday

    Friday: Rain and possibly a thunderstorm. Mostly cloudy, with a high near 67. South southwest wind 10 to 17 mph, with gusts as high as 24 mph.

    High: 67 °F

    Rain

  • Friday Night

    Friday Night: Rain likely and possibly a thunderstorm before midnight, then a chance of rain. Mostly cloudy, with a low around 34. Southwest wind 8 to 15 mph becoming northwest after midnight. Winds could gust as high as 21 mph.

    Low: 34 °F

    Rain Likely

Detailed Forecast

Tonight
A chance of drizzle after 3am. Cloudy, with a low around 32. Southeast wind 3 to 6 mph.
Tuesday
A slight chance of drizzle before noon, then a slight chance of rain after 5pm. Patchy fog between 7am and 11am. Otherwise, mostly cloudy, with a high near 51. Calm wind becoming east northeast 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
A 30 percent chance of rain, mainly after midnight. Mostly cloudy, with a low around 32. East northeast wind 3 to 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A 30 percent chance of rain, mainly before noon. Mostly sunny, with a high near 51. East northeast wind 3 to 6 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 35. Light east southeast wind. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Mostly sunny, with a high near 64. Light south southeast wind becoming south 5 to 10 mph in the morning.
Thursday Night
Rain, mainly after midnight. Low around 48. Southeast wind 8 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 80%.
Friday
Rain and possibly a thunderstorm. Mostly cloudy, with a high near 67. South southwest wind 10 to 17 mph, with gusts as high as 24 mph.
Friday Night
Rain likely and possibly a thunderstorm before midnight, then a chance of rain. Mostly cloudy, with a low around 34. Southwest wind 8 to 15 mph becoming northwest after midnight. Winds could gust as high as 21 mph.
Saturday
Mostly sunny, with a high near 51. Northwest wind 8 to 11 mph, with gusts as high as 17 mph.
Saturday Night
Mostly clear, with a low around 33. West northwest wind around 9 mph becoming south southwest after midnight.
Sunday
Sunny, with a high near 61. Southwest wind 9 to 16 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 37. Southwest wind around 9 mph becoming southeast after midnight.
Monday
Sunny, with a high near 64. East wind 9 to 17 mph becoming south in the afternoon. Winds could gust as high as 24 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 Mar 2, 2026
Forecast Valid:
4pm CST Mar 2, 2026-6pm CDT Mar 9, 2026
 
Forecast Discussion
 
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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