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

Hazardous Weather Conditions

Current conditions at

Newton Municipal Airport - Earl Johnson Field (KTNU)

Lat: 41.67°NLon: 93.02°WElev: 945ft.

Fair

90°F

32°C

Humidity 59%
Wind Speed S 8 mph
Barometer 29.83 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 3 Sep 6:35 pm CDT
Extended Forecast for

4 Miles SW Newton Municipal IA

Heat Advisory September 3, 06:46pm until September 5, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 3, 06:46pm until September 5, 07:00pm

    NOW until 7:00pm Sat

    Heat Advisory

  • Tonight

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 95. Heat index values as high as 105. South southwest wind 5 to 9 mph.

    High: 95 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 72. Light south southwest wind.

    Low: 72 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 94. Heat index values as high as 105. Light and variable wind.

    High: 94 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 70. East wind 3 to 6 mph.

    Low: 70 °F

    Mostly Clear

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 75. South wind 6 to 9 mph.
Friday
Sunny, with a high near 95. Heat index values as high as 105. South southwest wind 5 to 9 mph.
Friday Night
Partly cloudy, with a low around 72. Light south southwest wind.
Saturday
Sunny, with a high near 94. Heat index values as high as 105. Light and variable wind.
Saturday Night
Mostly clear, with a low around 70. East wind 3 to 6 mph.
Sunday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Partly cloudy, with a low around 68.
Labor Day
Mostly sunny, with a high near 90.
Monday Night
Partly cloudy, with a low around 72.
Tuesday
A 30 percent chance of showers after 1pm. Mostly sunny and hot, with a high near 97.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 93.
Wednesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 69.
Thursday
Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Newton Municipal IA
 41.62°N 93.07°W
Last Update:
5:36 pm CDT Sep 3, 2026
Forecast Valid:
6pm CDT Sep 3, 2026-6pm CDT Sep 10, 2026
 
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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