National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hot in Parts of the West; Cold Blast Coming to the Central U.S.

Hot to extremely hot temperatures are in place much of this week across parts of California and the interior Northwest U.S. A blast of cold air will drop across the central and eastern U.S. later this week bringing below to well below normal temperatures. Read More >

Hazardous Weather Conditions

Current conditions at

Harlan, Harlan Municipal Airport (KHNR)

Lat: 41.58°NLon: 95.34°WElev: 1230ft.

A Few Clouds

68°F

20°C

Humidity 73%
Wind Speed SE 3 mph
Barometer 30.17 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 1 Sep 5:15 pm CDT
Extended Forecast for

Irwin IA

  • Labor Day

    Labor Day: A 20 percent chance of showers. Mostly cloudy, with a high near 71. South southeast wind around 7 mph.

    High: 71 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 52. Light and variable wind.

    Low: 52 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 75. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 75 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 55. Light southwest wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Mostly Clear
    then Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 4pm, then a slight chance of showers. Mostly cloudy, with a high near 68. West southwest wind 5 to 13 mph becoming north in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 68 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 40. North wind 5 to 10 mph becoming light north northwest after midnight. Winds could gust as high as 18 mph.

    Low: 40 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 67. Light west northwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 17 mph.

    High: 67 °F

    Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms. Mostly clear, with a low around 47. Southwest wind around 8 mph becoming northwest after midnight.

    Low: 47 °F

    Slight Chance
    T-storms

  • Friday

    Friday: Sunny, with a high near 65. Northwest wind 8 to 14 mph, with gusts as high as 21 mph.

    High: 65 °F

    Sunny

Detailed Forecast

Labor Day
A 20 percent chance of showers. Mostly cloudy, with a high near 71. South southeast wind around 7 mph.
Tonight
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 52. Light and variable wind.
Tuesday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 75. Calm wind becoming west southwest around 5 mph in the afternoon.
Tuesday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 55. Light southwest wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms before 4pm, then a slight chance of showers. Mostly cloudy, with a high near 68. West southwest wind 5 to 13 mph becoming north in the afternoon. Winds could gust as high as 20 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
Partly cloudy, with a low around 40. North wind 5 to 10 mph becoming light north northwest after midnight. Winds could gust as high as 18 mph.
Thursday
Sunny, with a high near 67. Light west northwest wind becoming west 5 to 10 mph in the morning. Winds could gust as high as 17 mph.
Thursday Night
A slight chance of showers and thunderstorms. Mostly clear, with a low around 47. Southwest wind around 8 mph becoming northwest after midnight.
Friday
Sunny, with a high near 65. Northwest wind 8 to 14 mph, with gusts as high as 21 mph.
Friday Night
Mostly clear, with a low around 40. Northwest wind 5 to 7 mph becoming calm in the evening.
Saturday
Sunny, with a high near 68. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 45. Calm wind.
Sunday
Mostly sunny, with a high near 70. Calm wind becoming south southeast 5 to 8 mph in the morning.
Sunday Night
Partly cloudy, with a low around 51. Southeast wind around 6 mph.
Monday
Mostly sunny, with a high near 73. South wind 6 to 11 mph, with gusts as high as 18 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Irwin IA
 41.79°N 95.21°W (Elev. 1247 ft)
Last Update:
4:35 pm CDT Sep 1, 2025
Forecast Valid:
5pm CDT Sep 1, 2025-6pm CDT Sep 8, 2025
 
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