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

Hazardous Weather Conditions

Current conditions at

Lamoni, Lamoni Municipal Airport (KLWD)

Lat: 40.63°NLon: 93.9°WElev: 1129ft.

Overcast

74°F

23°C

Humidity 82%
Wind Speed E 8 mph
Barometer 29.88 in (1011.0 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 20 Jun 9:53 am CDT
Extended Forecast for

Decatur IA

Heat Advisory June 20, 12:00pm until June 22, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: A 30 percent chance of showers and thunderstorms before 11am. Sunny, with a high near 94. Heat index values as high as 102. Windy, with a south wind 16 to 21 mph, with gusts as high as 31 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 94 °F

    Chance
    T-storms and
    Breezy then
    Sunny and
    Windy

  • Tonight

    Tonight: Mostly clear, with a low around 77. Breezy, with a south southwest wind around 18 mph, with gusts as high as 30 mph.

    Low: 77 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Sunny, with a high near 96. Heat index values as high as 105. Windy, with a south southwest wind 18 to 23 mph, with gusts as high as 36 mph.

    High: 96 °F

    Sunny and
    Windy

  • Saturday Night

    Saturday Night: Clear, with a low around 75. Breezy, with a south southwest wind 16 to 18 mph, with gusts as high as 31 mph.

    Low: 75 °F

    Clear and
    Breezy

  • Sunday

    Sunday: Sunny, with a high near 93. Windy, with a south wind 16 to 22 mph, with gusts as high as 34 mph.

    High: 93 °F

    Sunny and
    Windy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 74. Breezy.

    Low: 74 °F

    Mostly Clear
    and Breezy

  • Monday

    Monday: A 30 percent chance of showers after 1pm. Sunny, with a high near 94.

    High: 94 °F

    Sunny then
    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.

    Low: 70 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 92. Chance of precipitation is 40%.

    High: 92 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms before 11am. Sunny, with a high near 94. Heat index values as high as 102. Windy, with a south wind 16 to 21 mph, with gusts as high as 31 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Mostly clear, with a low around 77. Breezy, with a south southwest wind around 18 mph, with gusts as high as 30 mph.
Saturday
Sunny, with a high near 96. Heat index values as high as 105. Windy, with a south southwest wind 18 to 23 mph, with gusts as high as 36 mph.
Saturday Night
Clear, with a low around 75. Breezy, with a south southwest wind 16 to 18 mph, with gusts as high as 31 mph.
Sunday
Sunny, with a high near 93. Windy, with a south wind 16 to 22 mph, with gusts as high as 34 mph.
Sunday Night
Mostly clear, with a low around 74. Breezy.
Monday
A 30 percent chance of showers after 1pm. Sunny, with a high near 94.
Monday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 92. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 40%.
Wednesday
A 40 percent chance of showers. Mostly sunny, with a high near 91.
Wednesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Thursday
A 50 percent chance of showers. Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Decatur IA
 40.75°N 93.84°W
Last Update:
9:14 am CDT Jun 20, 2025
Forecast Valid:
10am CDT Jun 20, 2025-6pm CDT Jun 26, 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