Tracking Major Hurricane Erin; Hot in the Mid-Mississippi Valley

Major Hurricane Erin is tracking just north of the lower Bahamas today. Dangerous surf and rip current threats increase this week for most of the Atlantic coastline. Erin's outerbands may impact the Outer Banks later this week. Hot to extremely hot temperatures are forecast today and Tuesday from a part of the southern Plains into the central to lower Mississippi River Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Partly Cloudy

70°F

21°C

Humidity 97%
Wind Speed SE 13 G 21 mph
Barometer 29.99 in (1014.5 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 18 Aug 9:53 am CDT
Extended Forecast for

5 Miles S Mason City IA

  • Today

    Today: A 40 percent chance of showers and thunderstorms, mainly before 3pm.  Partly sunny, with a high near 85. South southeast wind 7 to 9 mph becoming west southwest in the afternoon.  New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 10pm.  Partly cloudy, with a low around 69. West northwest wind 3 to 6 mph.

    Low: 69 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 82. North wind 5 to 8 mph.

    High: 82 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61. North northeast wind 3 to 6 mph.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. Northeast wind around 6 mph.

    High: 78 °F

    Sunny

  • Wednesday Night

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

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

Today
A 40 percent chance of showers and thunderstorms, mainly before 3pm. Partly sunny, with a high near 85. South southeast wind 7 to 9 mph becoming west southwest in the afternoon. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 69. West northwest wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 82. North wind 5 to 8 mph.
Tuesday Night
Mostly clear, with a low around 61. North northeast wind 3 to 6 mph.
Wednesday
Sunny, with a high near 78. Northeast wind around 6 mph.
Wednesday Night
Mostly clear, with a low around 57.
Thursday
Sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 58.
Friday
Mostly sunny, with a high near 78.
Friday Night
Mostly clear, with a low around 56.
Saturday
Sunny, with a high near 72.
Saturday Night
Mostly clear, with a low around 49.
Sunday
Sunny, with a high near 68.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Mason City IA
 43.08°N 93.19°W
6:05 am CDT Aug 18, 2025
10am CDT Aug 18, 2025-6pm CDT Aug 24, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database