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

Des Moines International Airport (KDSM)

Lat: 41.53°NLon: 93.65°WElev: 942ft.

Partly Cloudy

35°F

2°C

Humidity 48%
Wind Speed SW 13 mph
Barometer 30.41 in (1030.8 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 11 Jan 2:54 pm CST
Extended Forecast for

Saint Marys IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 37. Southwest wind around 9 mph, with gusts as high as 20 mph.

    High: 37 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 29. Southwest wind 8 to 14 mph, with gusts as high as 21 mph.

    Low: 29 °F

    Increasing
    Clouds

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 50. West southwest wind 7 to 9 mph.

    High: 50 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 35. Southwest wind 8 to 14 mph, with gusts as high as 20 mph.

    Low: 35 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 56. Breezy, with a west northwest wind 15 to 18 mph, with gusts as high as 26 mph.

    High: 56 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 28. Windy.

    Low: 28 °F

    Mostly Cloudy
    and Windy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 33. Windy.

    High: 33 °F

    Mostly Sunny
    and Windy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 17. Blustery.

    Low: 17 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

  • Thursday

    Thursday: Partly sunny, with a high near 36.

    High: 36 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 37. Southwest wind around 9 mph, with gusts as high as 20 mph.
Tonight
Increasing clouds, with a low around 29. Southwest wind 8 to 14 mph, with gusts as high as 21 mph.
Monday
Partly sunny, then gradually becoming sunny, with a high near 50. West southwest wind 7 to 9 mph.
Monday Night
Increasing clouds, with a low around 35. Southwest wind 8 to 14 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, with a high near 56. Breezy, with a west northwest wind 15 to 18 mph, with gusts as high as 26 mph.
Tuesday Night
Mostly cloudy, with a low around 28. Windy.
Wednesday
Mostly sunny, with a high near 33. Windy.
Wednesday Night
Mostly clear, with a low around 17. Blustery.
Thursday
Partly sunny, with a high near 36.
Thursday Night
Mostly cloudy, with a low around 29.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 37. Breezy.
Friday Night
Mostly cloudy, with a low around 15. Blustery.
Saturday
Partly sunny, with a high near 25. Blustery.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys IA
 41.3°N 93.75°W
Last Update:
2:51 pm CST Jan 11, 2026
Forecast Valid:
3pm CST Jan 11, 2026-6pm CST Jan 17, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation