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

Areas of Excessive Rainfall and Severe Thunderstorms; Typhoon Watch for Guam/CNMI

Heavy to excessive rainfall will continue today from the Texas Big Bend region into southern Oklahoma. Locally considerable flash and urban flooding is possible, and river flooding will continue in central Oklahoma. Scattered severe thunderstorms are possible in parts of the Mid-Atlantic Friday. A Typhoon Watch has been issued for Guam and CNMI. Read More >

Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Overcast and Breezy

50°F

10°C

Humidity 93%
Wind Speed NW 23 G 32 mph
Barometer 29.94 in (1013.8 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 15 Oct 2:53 pm CDT
Extended Forecast for

Sheffield IA

Freeze Watch October 17, 01:00am until October 17, 09:00am
Click here for hazard details and duration
Freeze Watch

  • This Afternoon

    This Afternoon: Showers. Steady temperature around 54. North northwest wind 13 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Showers

  • Tonight

    Tonight: Showers likely before 10pm, then a slight chance of showers after 3am. Cloudy, then gradually becoming partly cloudy, with a low around 41. Breezy, with a northwest wind 15 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Breezy.
    Showers
    Likely then
    Slight Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers, mainly before 9am. Mostly cloudy, with a high near 51. Windy, with a north wind 20 to 26 mph, with gusts as high as 39 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 51 °F

    Windy. Chance
    Showers then
    Mostly Cloudy

  • Friday Night

    Friday Night: Widespread frost, mainly after 2am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 29. North wind 5 to 8 mph becoming calm in the evening.

    Low: 29 °F

    Frost

  • Saturday

    Saturday: Widespread frost before 9am. Otherwise, sunny, with a high near 57. Light southwest wind becoming south southwest 9 to 14 mph in the morning. Winds could gust as high as 21 mph.

    High: 57 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 38.

    Low: 38 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 65. Breezy.

    High: 65 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Showers. Steady temperature around 54. North northwest wind 13 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Showers likely before 10pm, then a slight chance of showers after 3am. Cloudy, then gradually becoming partly cloudy, with a low around 41. Breezy, with a northwest wind 15 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 30 percent chance of showers, mainly before 9am. Mostly cloudy, with a high near 51. Windy, with a north wind 20 to 26 mph, with gusts as high as 39 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Widespread frost, mainly after 2am. Otherwise, mostly cloudy, then gradually becoming clear, with a low around 29. North wind 5 to 8 mph becoming calm in the evening.
Saturday
Widespread frost before 9am. Otherwise, sunny, with a high near 57. Light southwest wind becoming south southwest 9 to 14 mph in the morning. Winds could gust as high as 21 mph.
Saturday Night
Clear, with a low around 38.
Sunday
Sunny, with a high near 65. Breezy.
Sunday Night
Mostly clear, with a low around 41.
Monday
Mostly sunny, with a high near 66.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 70.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Mostly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sheffield IA
 42.89°N 93.2°W
Last Update:
1:52 pm CDT Oct 15, 2026
Forecast Valid:
3pm CDT Oct 15, 2026-6pm CDT Oct 21, 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