Current conditions at

Newton Municipal Airport - Earl Johnson Field (KTNU)

Lat: 41.67°NLon: 93.02°WElev: 945ft.

Fair

93°F

34°C

Humidity 47%
Wind Speed SW 9 mph
Barometer 29.92 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 1 Sep 2:55 pm CDT
Extended Forecast for

Colfax IA

Heat Advisory September 1, 03:10pm until September 3, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 1, 03:10pm until September 3, 07:00pm

    NOW until 7:00pm Thu

    Heat Advisory

  • This Afternoon

    High: 94 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 74. South wind around 7 mph.

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 94. Heat index values as high as 103. Southwest wind 6 to 10 mph.

    High: 94 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76. South wind around 7 mph.

    Low: 76 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 92. Light south wind increasing to 5 to 9 mph in the morning.

    High: 92 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 94. Heat index values as high as 101. South southwest wind around 7 mph.
Tonight
Mostly clear, with a low around 74. South wind around 7 mph.
Wednesday
Sunny, with a high near 94. Heat index values as high as 103. Southwest wind 6 to 10 mph.
Wednesday Night
Mostly clear, with a low around 76. South wind around 7 mph.
Thursday
Mostly sunny, with a high near 92. Light south wind increasing to 5 to 9 mph in the morning.
Thursday Night
Mostly clear, with a low around 74.
Friday
Mostly sunny, with a high near 92.
Friday Night
Mostly clear, with a low around 73.
Saturday
Mostly sunny, with a high near 93.
Saturday Night
Partly cloudy, with a low around 72.
Sunday
A 40 percent chance of showers. Mostly sunny, with a high near 89.
Sunday Night
Partly cloudy, with a low around 69.
Labor Day
Partly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Colfax IA
 41.69°N 93.25°W
1:51 pm CDT Sep 1, 2026
3pm CDT Sep 1, 2026-6pm CDT Sep 7, 2026
 
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Additional Resources

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