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

86°F

30°C

Humidity 100%
Wind Speed NE 6 mph
Barometer 29.99 in
Dewpoint 86°F (30°C)
Visibility 10.00 mi
Heat Index112°F (44°C)
Last update 5 Sep 11:15 am CDT
Extended Forecast for

Colfax IA

Heat Advisory September 5, 11:23am until September 5, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 5, 11:23am until September 5, 07:00pm

    NOW until 7:00pm Sat

    Heat Advisory

  • Today

    High: 94 °F

    Mostly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 70. East wind around 8 mph.

    Low: 70 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 86. East wind 8 to 10 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms before 7pm. Cloudy during the early evening, then becoming partly cloudy, with a low around 67. East southeast wind 8 to 10 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Chance
    Showers then
    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 86. Southeast wind 8 to 13 mph, with gusts as high as 20 mph.

    High: 86 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 95.

    High: 95 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 69. Chance of precipitation is 70%.

    Low: 69 °F

    Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 94. Heat index values as high as 106. East wind 5 to 7 mph.
Tonight
Increasing clouds, with a low around 70. East wind around 8 mph.
Sunday
A chance of showers, with thunderstorms also possible after 4pm. Mostly cloudy, with a high near 86. East wind 8 to 10 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 30 percent chance of showers and thunderstorms before 7pm. Cloudy during the early evening, then becoming partly cloudy, with a low around 67. East southeast wind 8 to 10 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Labor Day
Mostly sunny, with a high near 86. Southeast wind 8 to 13 mph, with gusts as high as 20 mph.
Monday Night
Partly cloudy, with a low around 70.
Tuesday
Mostly sunny, with a high near 95.
Tuesday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 69. Chance of precipitation is 70%.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
Mostly sunny, with a high near 83.
Thursday Night
Partly cloudy, with a low around 65.
Friday
Mostly sunny, with a high near 87.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Colfax IA
 41.67°N 93.25°W
Last Update:
9:02 am CDT Sep 5, 2026
Forecast Valid:
11am CDT Sep 5, 2026-6pm CDT Sep 11, 2026
 
Forecast Discussion
 
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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation