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.

Fog/Mist

43°F

6°C

Humidity 93%
Wind Speed N 15 G 23 mph
Barometer 30.09 in
Dewpoint 41°F (5°C)
Visibility 5.00 mi
Wind Chill36°F (2°C)
Last update 9 Apr 8:35 pm CDT
Extended Forecast for

Portsmouth IA

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 11pm. Low around 33. North northeast wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 33 °F

    T-storms then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 55. North northeast wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 55 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 39. East southeast wind 6 to 9 mph, with gusts as high as 16 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 39 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 66. Breezy, with a southeast wind 11 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 66 °F

    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Breezy, with a south wind 16 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Showers
    Likely and
    Breezy

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 7am. Mostly cloudy, with a high near 75. Breezy, with a south southwest wind 20 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 1am. Partly cloudy, with a low around 58. South wind 10 to 14 mph, with gusts as high as 22 mph.

    Low: 58 °F

    Chance
    Showers

  • Monday

    Monday: A slight chance of showers after 1pm. Mostly sunny, with a high near 81. Breezy, with a south wind 9 to 18 mph, with gusts as high as 26 mph.

    High: 81 °F

    Mostly Sunny
    then Slight
    Chance
    Showers and
    Breezy

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 57. South wind 9 to 13 mph, with gusts as high as 21 mph.

    Low: 57 °F

    Chance
    Showers

Detailed Forecast

Tonight
Showers and thunderstorms, mainly before 11pm. Low around 33. North northeast wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Mostly sunny, with a high near 55. North northeast wind 8 to 10 mph, with gusts as high as 18 mph.
Friday Night
A 50 percent chance of showers and thunderstorms after 1am. Increasing clouds, with a low around 39. East southeast wind 6 to 9 mph, with gusts as high as 16 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and possibly a thunderstorm. High near 66. Breezy, with a southeast wind 11 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Breezy, with a south wind 16 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers, with thunderstorms also possible after 7am. Mostly cloudy, with a high near 75. Breezy, with a south southwest wind 20 to 22 mph, with gusts as high as 31 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 30 percent chance of showers before 1am. Partly cloudy, with a low around 58. South wind 10 to 14 mph, with gusts as high as 22 mph.
Monday
A slight chance of showers after 1pm. Mostly sunny, with a high near 81. Breezy, with a south wind 9 to 18 mph, with gusts as high as 26 mph.
Monday Night
A chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 57. South wind 9 to 13 mph, with gusts as high as 21 mph.
Tuesday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 77. South southwest wind 8 to 16 mph, with gusts as high as 23 mph.
Tuesday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 47. South southwest wind 10 to 13 mph, with gusts as high as 20 mph.
Wednesday
A chance of showers. Mostly sunny, with a high near 69. West wind 10 to 14 mph, with gusts as high as 21 mph.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 47. South southwest wind around 8 mph.
Thursday
A slight chance of showers. Sunny, with a high near 75. South southwest wind 8 to 17 mph, with gusts as high as 25 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth IA
 41.65°N 95.5°W (Elev. 1319 ft)
Last Update:
7:46 pm CDT Apr 9, 2026
Forecast Valid:
8pm CDT Apr 9, 2026-6pm CDT Apr 16, 2026
 
Forecast Discussion
 
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