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.

Fair

51°F

11°C

Humidity 77%
Wind Speed Calm
Barometer 30.20 in (1022.7 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 7 Sep 2:54 am CDT
Extended Forecast for

Saint Marys IA

  • Overnight

    Overnight: Clear, with a steady temperature around 45. Calm wind.

    Low: 45 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 73. Calm wind.

    High: 73 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50. South wind 5 to 8 mph.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 81. Breezy, with a south wind 10 to 16 mph, with gusts as high as 25 mph.

    High: 81 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Monday Night

    Monday Night: A chance of showers, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 58. South wind around 11 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 80. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a steady temperature around 45. Calm wind.
Sunday
Sunny, with a high near 73. Calm wind.
Sunday Night
Mostly clear, with a low around 50. South wind 5 to 8 mph.
Monday
Mostly sunny, with a high near 81. Breezy, with a south wind 10 to 16 mph, with gusts as high as 25 mph.
Monday Night
A chance of showers, with thunderstorms also possible after 4am. Mostly cloudy, with a low around 58. South wind around 11 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 80. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Partly cloudy, with a low around 62.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Sunny, with a high near 89.
Thursday Night
Partly cloudy, with a low around 66.
Friday
Mostly sunny, with a high near 91.
Friday Night
Partly cloudy, with a low around 67.
Saturday
Mostly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys IA
 41.32°N 93.72°W
Last Update:
2:20 am CDT Sep 7, 2025
Forecast Valid:
3am CDT Sep 7, 2025-6pm CDT Sep 13, 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