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

Flooding Risks from Tropical Moisture Across the Intermountain West and East Coast

Tropical moisture from Isaias and Rachel will impact portions of the Intermountain West and East Coast states. Flooding, gusty winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, record warmth will spread northward across the Mississippi Valley the next few days. Looking for snow, the first winter storm of the season is underway across the northern Rockies. Read More >

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

78°F

26°C

Humidity 43%
Wind Speed SW 16 G 23 mph
Barometer 29.84 in (1009.3 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 11 Oct 10:53 am CDT
Extended Forecast for

Chapin IA

  • Today

    Today: Sunny, with a high near 85. South wind around 14 mph, with gusts as high as 21 mph.

    High: 85 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 67. South wind around 9 mph.

    Low: 67 °F

    Mostly Cloudy

  • Columbus Day

    Columbus Day: Mostly sunny, with a high near 86. South southwest wind 8 to 13 mph, with gusts as high as 18 mph.

    High: 86 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. South southwest wind 5 to 8 mph becoming north northwest after midnight.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 72. North northwest wind 6 to 8 mph.

    High: 72 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers after 1am. Partly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 68.

    High: 68 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 49.

    Low: 49 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers likely. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.

    High: 63 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 85. South wind around 14 mph, with gusts as high as 21 mph.
Tonight
Mostly cloudy, with a low around 67. South wind around 9 mph.
Columbus Day
Mostly sunny, with a high near 86. South southwest wind 8 to 13 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 58. South southwest wind 5 to 8 mph becoming north northwest after midnight.
Tuesday
Sunny, with a high near 72. North northwest wind 6 to 8 mph.
Tuesday Night
A 20 percent chance of showers after 1am. Partly cloudy, with a low around 52.
Wednesday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 68.
Wednesday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 49.
Thursday
Showers likely. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 43.
Friday
Partly sunny, with a high near 56. Windy.
Friday Night
Partly cloudy, with a low around 35.
Saturday
Sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Chapin IA
 42.84°N 93.23°W
Last Update:
9:37 am CDT Oct 11, 2026
Forecast Valid:
11am CDT Oct 11, 2026-6pm CDT Oct 17, 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