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

38°F

3°C

Humidity 93%
Wind Speed N 8 mph
Barometer 29.76 in (1007.6 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 9 Mar 11:53 pm CDT
Extended Forecast for

Grafton IA

  • Overnight

    Overnight: Mostly clear, with a low around 36. North northeast wind 8 to 10 mph.

    Low: 36 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 54. East northeast wind 11 to 14 mph, with gusts as high as 21 mph.

    High: 54 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of rain showers between 1am and 4am, then rain and snow showers likely. Mostly cloudy, with a low around 31. Northeast wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 31 °F

    Mostly Cloudy
    then
    Rain/Snow
    Likely

  • Wednesday

    Wednesday: Rain and snow likely before 10am, then a chance of snow between 10am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 43. Breezy, with a northwest wind 15 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 43 °F

    Breezy.
    Rain/Snow
    Likely then
    Chance Snow

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 25. Northwest wind 6 to 11 mph.

    Low: 25 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly cloudy, with a high near 50. Breezy.

    High: 50 °F

    Partly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Thursday Night

    Thursday Night: Rain likely before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 29. Blustery. Chance of precipitation is 60%.

    Low: 29 °F

    Rain Likely
    and Breezy
    then
    Rain/Snow
    Likely and
    Blustery

  • Friday

    Friday: Partly sunny, with a high near 44. Breezy.

    High: 44 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Overnight
Mostly clear, with a low around 36. North northeast wind 8 to 10 mph.
Tuesday
Partly sunny, with a high near 54. East northeast wind 11 to 14 mph, with gusts as high as 21 mph.
Tuesday Night
A chance of rain showers between 1am and 4am, then rain and snow showers likely. Mostly cloudy, with a low around 31. Northeast wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday
Rain and snow likely before 10am, then a chance of snow between 10am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 43. Breezy, with a northwest wind 15 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday Night
Mostly clear, with a low around 25. Northwest wind 6 to 11 mph.
Thursday
Mostly cloudy, with a high near 50. Breezy.
Thursday Night
Rain likely before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 29. Blustery. Chance of precipitation is 60%.
Friday
Partly sunny, with a high near 44. Breezy.
Friday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 28.
Saturday
Mostly cloudy, with a high near 45.
Saturday Night
Rain and snow likely. The snow could be heavy at times. Cloudy, with a low around 26. Blustery. Chance of precipitation is 70%.
Sunday
A 50 percent chance of snow. The snow could be heavy at times. Mostly cloudy, with a high near 35. Windy.
Sunday Night
Mostly cloudy, with a low around 10. Windy.
Monday
Mostly sunny, with a high near 26.
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ABOUT THIS FORECAST

 
Point Forecast:
Grafton IA
 43.34°N 93.07°W
Last Update:
10:26 pm CDT Mar 9, 2026
Forecast Valid:
12am CDT Mar 10, 2026-6pm CDT Mar 16, 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