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

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

67°F

19°C

Humidity 39%
Wind Speed N 14 mph
Barometer 30.29 in (1025.2 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 4 Oct 12:53 pm CDT
Extended Forecast for

Thornton IA

  • This Afternoon

    This Afternoon: Sunny, with a steady temperature around 65. Northwest wind around 8 mph.

    High: 65 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 43. Light northwest wind.

    Low: 43 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 68. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 51. South wind 7 to 10 mph.

    Low: 51 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 74. West southwest wind 9 to 14 mph, with gusts as high as 20 mph.

    High: 74 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 50.

    Low: 50 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a steady temperature around 65. Northwest wind around 8 mph.
Tonight
Clear, with a low around 43. Light northwest wind.
Monday
Sunny, with a high near 68. Calm wind becoming south 5 to 9 mph in the afternoon.
Monday Night
Mostly clear, with a low around 51. South wind 7 to 10 mph.
Tuesday
Sunny, with a high near 74. West southwest wind 9 to 14 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
Sunny, with a high near 70.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
Mostly sunny, with a high near 69.
Thursday Night
Partly cloudy, with a low around 49.
Friday
Mostly sunny, with a high near 68.
Friday Night
Mostly clear, with a low around 54.
Saturday
Sunny, with a high near 74. Windy.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Thornton IA
 42.95°N 93.37°W
Last Update:
12:02 pm CDT Oct 4, 2026
Forecast Valid:
1pm CDT Oct 4, 2026-6pm CDT Oct 10, 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