Strong to Severe Thunderstorms in the East; Heat in the Central and Western U.S.

Strong to potentially severe thunderstorms with damaging wind gusts are forecast Thursday from parts of New England into the Mid Atlantic and Carolinas. Significant heat will expand across the West and Central Plains through Friday, potentially breaking daily high temperature records. Dangerous heat will then build into the Eastern U.S. this weekend through much of next week. Read More >

Current conditions at

Harlan, Harlan Municipal Airport (KHNR)

Lat: 41.58°NLon: 95.34°WElev: 1230ft.

Partly Cloudy

73°F

23°C

Humidity 61%
Wind Speed N 7 mph
Barometer 29.89 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 18 Jun 7:35 pm CDT
Extended Forecast for

2 Miles SE Portsmouth IA

Extreme Heat Watch June 20, 10:00am until June 22, 09:00pm
Click here for hazard details and duration
Extreme Heat Watch
  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm.  Mostly clear, with a low around 58. North wind around 6 mph becoming calm  in the evening.

    Low: 58 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 88. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms after 1am.  Mostly clear, with a low around 68. South wind 9 to 15 mph, with gusts as high as 25 mph.

    Low: 68 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Friday

    Friday: Sunny and hot, with a high near 97. Breezy, with a south wind 14 to 24 mph, with gusts as high as 33 mph.

    High: 97 °F

    Hot and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 76. Breezy, with a south wind around 22 mph, with gusts as high as 32 mph.

    Low: 76 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Sunny and hot, with a high near 97. Windy, with a south wind 20 to 25 mph, with gusts as high as 34 mph.

    High: 97 °F

    Hot and Windy

  • Saturday Night

    Saturday Night: Clear, with a low around 76. Breezy, with a south wind 20 to 22 mph, with gusts as high as 31 mph.

    Low: 76 °F

    Clear and
    Breezy

  • Sunday

    Sunday: Sunny, with a high near 96. Windy, with a south wind 21 to 26 mph, with gusts as high as 34 mph.

    High: 96 °F

    Sunny and
    Windy

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, mainly after 1am.  Mostly clear, with a low around 73. Breezy, with a south wind 14 to 20 mph, with gusts as high as 29 mph.

    Low: 73 °F

    Chance
    T-storms and
    Breezy

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 58. North wind around 6 mph becoming calm in the evening.
Juneteenth
Sunny, with a high near 88. Light southwest wind increasing to 5 to 10 mph in the morning.
Thursday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 68. South wind 9 to 15 mph, with gusts as high as 25 mph.
Friday
Sunny and hot, with a high near 97. Breezy, with a south wind 14 to 24 mph, with gusts as high as 33 mph.
Friday Night
Mostly clear, with a low around 76. Breezy, with a south wind around 22 mph, with gusts as high as 32 mph.
Saturday
Sunny and hot, with a high near 97. Windy, with a south wind 20 to 25 mph, with gusts as high as 34 mph.
Saturday Night
Clear, with a low around 76. Breezy, with a south wind 20 to 22 mph, with gusts as high as 31 mph.
Sunday
Sunny, with a high near 96. Windy, with a south wind 21 to 26 mph, with gusts as high as 34 mph.
Sunday Night
A chance of showers and thunderstorms, mainly after 1am. Mostly clear, with a low around 73. Breezy, with a south wind 14 to 20 mph, with gusts as high as 29 mph.
Monday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 92. South wind 13 to 15 mph, with gusts as high as 24 mph.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 67. West northwest wind 7 to 13 mph becoming south southeast after midnight. Winds could gust as high as 20 mph.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 84. East southeast wind 7 to 10 mph becoming southwest in the afternoon. Winds could gust as high as 17 mph.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. East northeast wind around 8 mph becoming south southeast after midnight.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 80. South wind 7 to 10 mph, with gusts as high as 17 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SE Portsmouth IA
 41.63°N 95.5°W (Elev. 1296 ft)
7:35 pm CDT Jun 18, 2025
7pm CDT Jun 18, 2025-6pm CDT Jun 25, 2025
 
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Additional Resources

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