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Tropical Storm Edouard Along the Gulf Coast; Heat Expands Eastward

Tropical Storm Edouard off the central Gulf Coast will bring tropical storm conditions and heavy rainfall to portions of Upper Texas and southwestern Louisiana coasts Tuesday into Wednesday. Storm Surge Watches and Tropical Storm Warnings are in effect. Hot and humid conditions will continue to expand from the Central Plains into the Ohio Valley and Mid-Atlantic this week. Read More >

Current conditions at

Harlan, Harlan Municipal Airport (KHNR)

Lat: 41.58°NLon: 95.34°WElev: 1230ft.

Overcast

72°F

22°C

Humidity 100%
Wind Speed Calm
Barometer 29.96 in
Dewpoint 72°F (22°C)
Visibility 8.00 mi
Last update 1 Sep 12:55 am CDT
Extended Forecast for

Portsmouth IA

  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 72. Calm wind.

    Low: 72 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 92. Light and variable wind becoming south 5 to 9 mph in the morning.

    High: 92 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 73. South wind 6 to 13 mph becoming west after midnight. Winds could gust as high as 25 mph.

    Low: 73 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 91. East southeast wind 7 to 9 mph becoming southwest in the morning.

    High: 91 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 74. South southeast wind 5 to 10 mph, with gusts as high as 18 mph.

    Low: 74 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 92. South wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 92 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 74. South wind around 11 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 92. South wind 9 to 11 mph, with gusts as high as 17 mph.

    High: 92 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 74. South southeast wind around 7 mph.

    Low: 74 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 72. Calm wind.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 92. Light and variable wind becoming south 5 to 9 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 73. South wind 6 to 13 mph becoming west after midnight. Winds could gust as high as 25 mph.
Wednesday
Mostly sunny, with a high near 91. East southeast wind 7 to 9 mph becoming southwest in the morning.
Wednesday Night
Mostly clear, with a low around 74. South southeast wind 5 to 10 mph, with gusts as high as 18 mph.
Thursday
Mostly sunny, with a high near 92. South wind 10 to 13 mph, with gusts as high as 20 mph.
Thursday Night
Mostly clear, with a low around 74. South wind around 11 mph, with gusts as high as 20 mph.
Friday
Mostly sunny, with a high near 92. South wind 9 to 11 mph, with gusts as high as 17 mph.
Friday Night
Partly cloudy, with a low around 74. South southeast wind around 7 mph.
Saturday
Mostly sunny, with a high near 93. South wind 5 to 8 mph.
Saturday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 71. Southeast wind around 6 mph.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 90. East southeast wind 3 to 8 mph.
Sunday Night
Partly cloudy, with a low around 69. East wind around 7 mph.
Labor Day
Mostly sunny, with a high near 87. South wind 6 to 10 mph, with gusts as high as 16 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portsmouth IA
 41.65°N 95.53°W (Elev. 1250 ft)
Last Update:
12:36 am CDT Sep 1, 2026
Forecast Valid:
1am CDT Sep 1, 2026-6pm CDT Sep 7, 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