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

Dangerous Heat in the East; Critical Fire Weather in the Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue today and likely Tuesday across portions of the Four Corners and northern High Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Chariton (KCNC)

Lat: 41.03°NLon: 93.37°WElev: 1050ft.

Partly Cloudy and Breezy

90°F

32°C

Humidity 75%
Wind Speed S 21 G 28 mph
Barometer 29.76 in
Dewpoint 81°F (27°C)
Visibility 9.00 mi
Heat Index109°F (43°C)
Last update 29 Jun 4:15 pm CDT
Extended Forecast for

Derby IA

Extreme Heat Warning June 29, 04:24pm until July 1, 10:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 29, 04:24pm until July 1, 10:00pm

    NOW until 10:00pm Wed

    Extreme Heat Warning

  • This Afternoon

    High: 91 °F

    Sunny and
    Windy

  • Tonight

    Tonight: Partly cloudy, with a low around 75. Windy, with a south wind 16 to 22 mph, with gusts as high as 31 mph.

    Low: 75 °F

    Partly Cloudy
    and Windy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 91. Heat index values as high as 101. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 28 mph.

    High: 91 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 74. Breezy, with a south southwest wind 14 to 16 mph, with gusts as high as 25 mph.

    Low: 74 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 91. Breezy, with a south southwest wind 14 to 18 mph, with gusts as high as 26 mph.

    High: 91 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 74. Breezy.

    Low: 74 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.

    High: 90 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 72.

    Low: 72 °F

    Mostly Cloudy
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Sunny, with a high near 91. Heat index values as high as 103. Windy, with a south wind around 23 mph, with gusts as high as 31 mph.
Tonight
Partly cloudy, with a low around 75. Windy, with a south wind 16 to 22 mph, with gusts as high as 31 mph.
Tuesday
Mostly sunny, with a high near 91. Heat index values as high as 101. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 28 mph.
Tuesday Night
Partly cloudy, with a low around 74. Breezy, with a south southwest wind 14 to 16 mph, with gusts as high as 25 mph.
Wednesday
Mostly sunny, with a high near 91. Breezy, with a south southwest wind 14 to 18 mph, with gusts as high as 26 mph.
Wednesday Night
Partly cloudy, with a low around 74. Breezy.
Thursday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Thursday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 72.
Friday
Mostly sunny, with a high near 91.
Friday Night
Partly cloudy, with a low around 71.
Independence Day
Mostly sunny, with a high near 91.
Saturday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Sunday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Derby IA
 40.93°N 93.46°W
Last Update:
3:13 pm CDT Jun 29, 2026
Forecast Valid:
4pm CDT Jun 29, 2026-6pm CDT Jul 5, 2026
 
Forecast Discussion
 
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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