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

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

72°F

22°C

Humidity 94%
Wind Speed SE 9 mph
Barometer 29.84 in (1009.0 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 30 Aug 9:53 pm CDT
Extended Forecast for

6 Miles SE Grafton IA

  • Tonight

    Tonight: Mostly cloudy, with a low around 71. South wind 8 to 10 mph.

    Low: 71 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 89. Southwest wind around 6 mph becoming northwest in the afternoon.

    High: 89 °F

    Partly Sunny

  • Monday Night

    Monday Night: Isolated showers and thunderstorms between 1am and 2am. Partly cloudy, with a low around 68. Light and variable wind. Chance of precipitation is 20%.

    Low: 68 °F

    Mostly Clear
    then Isolated
    T-storms

  • Tuesday

    Tuesday: Partly sunny, with a high near 88. Light and variable wind.

    High: 88 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 68. Calm wind becoming northeast 5 to 7 mph in the evening. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 86. Northeast wind around 7 mph becoming south in the afternoon.

    High: 86 °F

    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 67. East wind around 5 mph.

    Low: 67 °F

    Mostly Clear
    then Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 84. Southeast wind 5 to 9 mph.

    High: 84 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 69. Southeast wind 6 to 8 mph.

    Low: 69 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

Detailed Forecast

Tonight
Mostly cloudy, with a low around 71. South wind 8 to 10 mph.
Monday
Partly sunny, with a high near 89. Southwest wind around 6 mph becoming northwest in the afternoon.
Monday Night
Isolated showers and thunderstorms between 1am and 2am. Partly cloudy, with a low around 68. Light and variable wind. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 88. Light and variable wind.
Tuesday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 68. Calm wind becoming northeast 5 to 7 mph in the evening. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 86. Northeast wind around 7 mph becoming south in the afternoon.
Wednesday Night
A 50 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 67. East wind around 5 mph.
Thursday
A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 84. Southeast wind 5 to 9 mph.
Thursday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 69. Southeast wind 6 to 8 mph.
Friday
Mostly sunny, with a high near 85. Southeast wind 6 to 8 mph becoming south in the afternoon.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 67. Southeast wind around 7 mph.
Saturday
Mostly sunny, with a high near 85. Southeast wind 6 to 8 mph.
Saturday Night
Partly cloudy, with a low around 64. East wind 5 to 8 mph.
Sunday
A 20 percent chance of showers. Mostly sunny, with a high near 83. Southeast wind 6 to 10 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SE Grafton IA
 43.27°N 92.98°W
Last Update:
9:22 pm CDT Aug 30, 2026
Forecast Valid:
10pm CDT Aug 30, 2026-6pm CDT Sep 6, 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