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.

Fog

63°F

17°C

Humidity 100%
Wind Speed Calm
Barometer 29.93 in (1012.5 mb)
Dewpoint 63°F (17°C)
Visibility 0.25 mi
Last update 9 Jun 2:53 am CDT
Extended Forecast for

Mason City IA

  • Overnight

    Overnight: Patchy fog after 4am. Otherwise, mostly cloudy, with a steady temperature around 67. Calm wind.

    Low: 67 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 89. Light and variable wind becoming southeast 5 to 10 mph in the morning.

    High: 89 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms, mainly before 4am. Partly cloudy, with a low around 72. Southeast wind 11 to 15 mph becoming southwest after midnight. Winds could gust as high as 23 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 72 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 89. Windy, with a south wind 16 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 89 °F

    Windy. Slight
    Chance
    T-storms then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly clear, with a low around 61. Southwest wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. High near 79. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 79 °F

    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 80. Breezy.

    High: 80 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, mostly cloudy, with a steady temperature around 67. Calm wind.
Tuesday
Patchy fog before 8am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 89. Light and variable wind becoming southeast 5 to 10 mph in the morning.
Tuesday Night
A 40 percent chance of showers and thunderstorms, mainly before 4am. Partly cloudy, with a low around 72. Southeast wind 11 to 15 mph becoming southwest after midnight. Winds could gust as high as 23 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 89. Windy, with a south wind 16 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A chance of showers and thunderstorms. Mostly clear, with a low around 61. Southwest wind 9 to 14 mph becoming light and variable after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. High near 79. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
Mostly clear, with a low around 56.
Friday
Sunny, with a high near 80. Breezy.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 80.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 51.
Monday
Mostly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mason City IA
 43.15°N 93.19°W
Last Update:
1:27 am CDT Jun 9, 2026
Forecast Valid:
3am CDT Jun 9, 2026-6pm CDT Jun 15, 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