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National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 42.78°N 96.18°W (Text-Only)
NWS Forecast for: Le Mars IA
Issued by: National Weather Service Sioux Falls, SD
Last Update: 1:32 am CDT Jun 30, 2026		Print

  • Overnight

    Overnight: Showers and possibly a thunderstorm before 4am, then a chance of showers and thunderstorms after 4am. Low around 71. South wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 71 °F

    Showers



  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 94. South wind around 5 mph.

    High: 94 °F

    Becoming
    Sunny


  • Tuesday
    Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms, mainly after 2am. Increasing clouds, with a low around 71. Light south wind becoming south southeast 5 to 10 mph after midnight.

    Low: 71 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely before 3pm, then a chance of showers and thunderstorms after 4pm. Cloudy through mid morning, then gradual clearing, with a high near 91. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 91 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday
    Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 68. West southwest wind 5 to 10 mph becoming light and variable in the evening.

    Low: 68 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers and thunderstorms before 1pm, then a chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 92. Light south southeast wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 40%.

    High: 92 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday
    Night

    Thursday Night: Showers likely before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a chance of showers after 1am. Partly cloudy, with a low around 71. Chance of precipitation is 70%.

    Low: 71 °F

    Showers
    Likely


  • Friday

    Friday: Mostly sunny, with a high near 94.

    High: 94 °F

    Mostly Sunny



  • Friday
    Night

    Friday Night: Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 71. Chance of precipitation is 60%.

    Low: 71 °F

    Showers
    Likely




    • Overnight: Showers and possibly a thunderstorm before 4am, then a chance of showers and thunderstorms after 4am. Low around 71. South wind around 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 94. South wind around 5 mph.

    Tuesday Night: A 50 percent chance of showers and thunderstorms, mainly after 2am. Increasing clouds, with a low around 71. Light south wind becoming south southeast 5 to 10 mph after midnight.

    Wednesday: Showers and thunderstorms likely before 3pm, then a chance of showers and thunderstorms after 4pm. Cloudy through mid morning, then gradual clearing, with a high near 91. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 1am. Partly cloudy, with a low around 68. West southwest wind 5 to 10 mph becoming light and variable in the evening.

    Thursday: A slight chance of showers and thunderstorms before 1pm, then a chance of showers between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 92. Light south southeast wind increasing to 5 to 10 mph in the morning. Chance of precipitation is 40%.

    Thursday Night: Showers likely before 7pm, then showers likely and possibly a thunderstorm between 7pm and 1am, then a chance of showers after 1am. Partly cloudy, with a low around 71. Chance of precipitation is 70%.

    Friday: Mostly sunny, with a high near 94.

    Friday Night: Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 71. Chance of precipitation is 60%.

    Independence Day: Partly sunny, with a high near 91.

    Saturday Night: Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 68. Chance of precipitation is 60%.

    Sunday: A 30 percent chance of showers. Partly sunny, with a high near 87.

    Sunday Night: Partly cloudy, with a low around 65.

    Monday: Mostly sunny, with a high near 88.


    Le Mars IA
     42.78°N 96.18°W (Elev. 1211 ft)

    Visit your local NWS office at: https://www.weather.gov/fsd/