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

75°F

24°C

Humidity 100%
Wind Speed S 6 mph
Barometer 29.87 in
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Last update 3 Sep 2:55 am CDT
Extended Forecast for

2 Miles S Lambs Grove IA

Heat Advisory September 3, 03:16am until September 4, 07:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 3, 03:16am until September 4, 07:00pm

    NOW until 7:00pm Fri

    Heat Advisory

  • Overnight

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 94. Heat index values as high as 101. South wind 6 to 11 mph, with gusts as high as 18 mph.

    High: 94 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 75. South wind 6 to 9 mph.

    Low: 75 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 95. Heat index values as high as 104. South southwest wind 5 to 9 mph.

    High: 95 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 73. South wind around 5 mph becoming calm in the evening.

    Low: 73 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear
    then Slight
    Chance
    T-storms

  • Sunday

    Sunday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 89.

    High: 89 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 77. South wind around 6 mph.
Thursday
Sunny, with a high near 94. Heat index values as high as 101. South wind 6 to 11 mph, with gusts as high as 18 mph.
Thursday Night
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 104. South southwest wind 5 to 9 mph.
Friday Night
Mostly clear, with a low around 73. South wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 93.
Saturday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 72.
Sunday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 89.
Sunday Night
Partly cloudy, with a low around 70.
Labor Day
Mostly sunny, with a high near 89.
Monday Night
Partly cloudy, with a low around 72.
Tuesday
Mostly sunny, with a high near 93.
Tuesday Night
A 40 percent chance of showers. Partly cloudy, with a low around 71.
Wednesday
A 30 percent chance of showers. 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:
2 Miles S Lambs Grove IA
 41.67°N 93.07°W
Last Update:
3:02 am CDT Sep 3, 2026
Forecast Valid:
3am CDT Sep 3, 2026-6pm CDT Sep 9, 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