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

Spencer Municipal Airport (KSPW)

Lat: 43.17°NLon: 95.21°WElev: 1332ft.

Overcast

64°F

18°C

Humidity 90%
Wind Speed Calm
Barometer 30.00 in (1015.1 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 19 Aug 1:53 am CDT
Extended Forecast for

3 Miles N Marathon IA

  • Overnight

    Overnight: Partly cloudy, with a low around 60. Calm wind becoming northeast around 5 mph.

    Low: 60 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers between noon and 3pm. Partly sunny, with a high near 78. Calm wind becoming east around 5 mph. Chance of precipitation is 20%.

    High: 78 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. Calm wind becoming southwest around 5 mph.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 82. South southwest wind 5 to 10 mph.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 62. South southwest wind around 5 mph.

    Low: 62 °F

    Slight Chance
    T-storms

  • Friday

    Friday: Sunny, with a high near 83. Northwest wind around 5 mph.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 60. Calm wind becoming northeast around 5 mph.
Wednesday
A slight chance of showers between noon and 3pm. Partly sunny, with a high near 78. Calm wind becoming east around 5 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 57. Calm wind becoming southwest around 5 mph.
Thursday
Mostly sunny, with a high near 82. South southwest wind 5 to 10 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 62. South southwest wind around 5 mph.
Friday
Sunny, with a high near 83. Northwest wind around 5 mph.
Friday Night
Mostly clear, with a low around 61.
Saturday
Sunny, with a high near 79.
Saturday Night
Partly cloudy, with a low around 57.
Sunday
Partly sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Partly sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles N Marathon IA
 42.92°N 94.97°W (Elev. 1401 ft)
Last Update:
1:32 am CDT Aug 19, 2026
Forecast Valid:
2am CDT Aug 19, 2026-6pm CDT Aug 25, 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