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

45°F

7°C

Humidity 43%
Wind Speed NE 12 G 20 mph
Barometer 30.37 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 6 Apr 5:55 pm CDT
Extended Forecast for

Portsmouth IA

Winter Weather Advisory April 6, 10:00pm until April 7, 01:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Tonight

    Tonight: A chance of rain showers before 10pm, then snow. Low around 26. East northeast wind 8 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 2 to 4 inches possible.

    Low: 26 °F

    Chance
    Rain/Snow
    then Snow

  • Tuesday

    Tuesday: Snow likely before 3pm, then rain showers likely. Cloudy, with a high near 36. East southeast wind 10 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

    High: 36 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely, mainly before 7pm. Mostly cloudy, with a temperature rising to around 41 by 5am. Breezy, with a southeast wind 14 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F⇑

    Showers
    Likely then
    Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 4pm. Mostly sunny, with a high near 65. Breezy, with a south wind 16 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Chance
    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 38. West wind 5 to 8 mph becoming light and variable. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 38 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 58. North wind 5 to 9 mph becoming east in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 58 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 39. North northeast wind around 8 mph. Chance of precipitation is 40%.

    Low: 39 °F

    Chance
    T-storms

  • Friday

    Friday: A chance of showers. Partly sunny, with a high near 59. Northeast wind 8 to 10 mph.

    High: 59 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 44. East northeast wind around 8 mph.

    Low: 44 °F

    Showers
    Likely

Detailed Forecast

Tonight
A chance of rain showers before 10pm, then snow. Low around 26. East northeast wind 8 to 10 mph, with gusts as high as 16 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 2 to 4 inches possible.
Tuesday
Snow likely before 3pm, then rain showers likely. Cloudy, with a high near 36. East southeast wind 10 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Tuesday Night
Showers likely, mainly before 7pm. Mostly cloudy, with a temperature rising to around 41 by 5am. Breezy, with a southeast wind 14 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A chance of showers, with thunderstorms also possible after 4pm. Mostly sunny, with a high near 65. Breezy, with a south wind 16 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 38. West wind 5 to 8 mph becoming light and variable. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 58. North wind 5 to 9 mph becoming east in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 39. North northeast wind around 8 mph. Chance of precipitation is 40%.
Friday
A chance of showers. Partly sunny, with a high near 59. Northeast wind 8 to 10 mph.
Friday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 44. East northeast wind around 8 mph.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Cloudy, with a high near 65. Southeast wind 10 to 16 mph, with gusts as high as 25 mph.
Saturday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 54. Southeast wind 14 to 16 mph, with gusts as high as 24 mph.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 73. Breezy, with a south wind 15 to 22 mph, with gusts as high as 31 mph.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 54. South wind 14 to 16 mph, with gusts as high as 24 mph.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 73. South wind 11 to 17 mph, with gusts 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:
6:02 pm CDT Apr 6, 2026
Forecast Valid:
6pm CDT Apr 6, 2026-6pm CDT Apr 13, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation