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

Hazardous Weather Conditions

Current conditions at

Spencer Municipal Airport (KSPW)

Lat: 43.17°NLon: 95.21°WElev: 1332ft.

Fair

64°F

18°C

Humidity 87%
Wind Speed NW 6 mph
Barometer 30.14 in (1020.2 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 27 Aug 8:53 am CDT
Extended Forecast for

Marathon IA

  • Today

    Today: Sunny, with a high near 82. North northwest wind around 5 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 84. Light south southeast wind becoming south 5 to 10 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. South wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 86. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.

    High: 86 °F

    Breezy.
    Chance
    T-storms then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 72. South wind around 10 mph.

    Low: 72 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 88.

    High: 88 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 82. North northwest wind around 5 mph.
Tonight
Mostly clear, with a low around 55. Calm wind.
Friday
Mostly sunny, with a high near 84. Light south southeast wind becoming south 5 to 10 mph in the afternoon.
Friday Night
A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. South wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 86. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Saturday Night
Partly cloudy, with a low around 72. South wind around 10 mph.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
Partly cloudy, with a low around 70.
Monday
Partly sunny, with a high near 88.
Monday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 66.
Tuesday
Partly sunny, with a high near 85.
Tuesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 65.
Wednesday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marathon IA
 42.85°N 94.97°W (Elev. 1375 ft)
Last Update:
9:33 am CDT Aug 27, 2026
Forecast Valid:
9am CDT Aug 27, 2026-6pm CDT Sep 2, 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