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

Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

88°F

31°C

Humidity 23%
Wind Speed S 14 G 22 mph
Barometer 29.68 in (1003.8 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 15 May 2:53 pm CDT
Extended Forecast for

3 Miles NNE Rock Falls IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 88. South wind 11 to 14 mph, with gusts as high as 18 mph.

    High: 88 °F

    Sunny

  • Tonight

    Tonight: Showers and thunderstorms, mainly before 11pm. Some of the storms could be severe. Low around 51. South wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 51 °F

    Severe
    Thunderstorms

  • Saturday

    Saturday: Mostly sunny, with a high near 82. Northwest wind around 6 mph becoming north northeast in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 54. East wind 6 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Sunday

    Sunday: Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 83. Windy, with a south southeast wind 15 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 83 °F

    Showers and
    Windy

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 58. Windy. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 58 °F

    Showers and
    Windy

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 82. Windy. Chance of precipitation is 80%.

    High: 82 °F

    Showers and
    Windy

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 50. Windy. Chance of precipitation is 80%.

    Low: 50 °F

    Showers and
    Windy

  • Tuesday

    Tuesday: Partly sunny, with a high near 63. Windy.

    High: 63 °F

    Partly Sunny
    and Windy

Detailed Forecast

This Afternoon
Sunny, with a high near 88. South wind 11 to 14 mph, with gusts as high as 18 mph.
Tonight
Showers and thunderstorms, mainly before 11pm. Some of the storms could be severe. Low around 51. South wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Mostly sunny, with a high near 82. Northwest wind around 6 mph becoming north northeast in the afternoon.
Saturday Night
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 54. East wind 6 to 11 mph, with gusts as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. High near 83. Windy, with a south southeast wind 15 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and possibly a thunderstorm. Low around 58. Windy. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Showers and possibly a thunderstorm. High near 82. Windy. Chance of precipitation is 80%.
Monday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Low around 50. Windy. Chance of precipitation is 80%.
Tuesday
Partly sunny, with a high near 63. Windy.
Tuesday Night
Partly cloudy, with a low around 40. Windy.
Wednesday
Sunny, with a high near 63.
Wednesday Night
Partly cloudy, with a low around 40.
Thursday
Mostly sunny, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Rock Falls IA
 43.23°N 93.07°W
Last Update:
2:26 pm CDT May 15, 2026
Forecast Valid:
3pm CDT May 15, 2026-6pm CDT May 21, 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