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

Strong Storms and Heavy Rainfall Threats; Dangerous Heat for Southern Plains into the Southwest

Thunderstorms, some severe, will impact areas of the Plains into the Midwest today. Rainfall can be locally heavy as well from these storms with isolated instances of flash flooding. Monsoonal flow will enhance rainfall across the Four Corners into the central Rockies today. Meanwhile, summer heat continues for the southern Plains, Southwest into southern California. Read More >

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

71°F

22°C

Humidity 71%
Wind Speed S 12 mph
Barometer 30.05 in (1016.8 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 25 Aug 9:53 am CDT
Extended Forecast for

Rock Falls IA

  • Today

    Today: Mostly sunny, with a high near 82. South wind 9 to 11 mph.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 63. South southwest wind 6 to 8 mph becoming west after midnight.

    Low: 63 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 80. Northwest wind 7 to 15 mph, with gusts as high as 23 mph.

    High: 80 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. Northwest wind 5 to 8 mph.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 80. North northwest wind 5 to 8 mph.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers before 1pm. Partly sunny, with a high near 82. Breezy.

    High: 82 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Today
Mostly sunny, with a high near 82. South wind 9 to 11 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 63. South southwest wind 6 to 8 mph becoming west after midnight.
Wednesday
Sunny, with a high near 80. Northwest wind 7 to 15 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 60. Northwest wind 5 to 8 mph.
Thursday
Sunny, with a high near 80. North northwest wind 5 to 8 mph.
Thursday Night
Mostly clear, with a low around 55.
Friday
Sunny, with a high near 82.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 63.
Saturday
A 40 percent chance of showers before 1pm. Partly sunny, with a high near 82. Breezy.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 86.
Sunday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Monday
Partly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Rock Falls IA
 43.21°N 93.1°W
Last Update:
5:26 am CDT Aug 25, 2026
Forecast Valid:
10am CDT Aug 25, 2026-6pm CDT Aug 31, 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