Current conditions at

Newton Municipal Airport - Earl Johnson Field (KTNU)

Lat: 41.67°NLon: 93.02°WElev: 945ft.

Fair

81°F

27°C

Humidity 100%
Wind Speed S 5 mph
Barometer 29.85 in
Dewpoint 81°F (27°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 3 Sep 8:55 pm CDT
Extended Forecast for

Newton IA

Heat Advisory September 3, 09:06pm until September 5, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 3, 09:06pm until September 5, 07:00pm

    NOW until 7:00pm Sat

    Heat Advisory

  • Tonight

    Low: 74 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 95. Heat index values as high as 104. South southwest wind 6 to 9 mph.

    High: 95 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 71. Light south southwest wind.

    Low: 71 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 93. Heat index values as high as 102. Light and variable wind.

    High: 93 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 69. East wind 3 to 6 mph.

    Low: 69 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 89. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Slight Chance
    T-storms 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 89.

    High: 89 °F

    Mostly Sunny

Detailed Forecast

Tonight
Clear, with a low around 74. South wind 7 to 9 mph.
Friday
Sunny, with a high near 95. Heat index values as high as 104. South southwest wind 6 to 9 mph.
Friday Night
Partly cloudy, with a low around 71. Light south southwest wind.
Saturday
Sunny, with a high near 93. Heat index values as high as 102. Light and variable wind.
Saturday Night
Mostly clear, with a low around 69. East wind 3 to 6 mph.
Sunday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%. 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 89.
Monday Night
Partly cloudy, with a low around 71.
Tuesday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 96.
Tuesday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Wednesday
A 30 percent chance of showers. Mostly sunny, with a high near 92.
Wednesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 68.
Thursday
Mostly sunny, with a high near 87.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Newton IA
 41.69°N 93.04°W
8:06 pm CDT Sep 3, 2026
9pm CDT Sep 3, 2026-6pm CDT Sep 10, 2026
 
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