Clarke County, IA

Alerts

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Briefing

Last updated:

Sunday, Jul 26, 2026, 4:32 PM

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From the Forecaster

Dangerous Heat Again Monday

Created by the NWS Des Moines WFO

Dangerously hot and humid conditions will persist for much of Iowa again on Monday, though some relief will begin to arrive over northwest Iowa. High temperatures will be in the 90s with heat index values in the 100 to 115 degree range. Practice good heat safety and avoid prolonged time outdoors. If you must be outdoors, heat illness could occur. Make sure to take frequent breaks in the A/C or shade, and drink plenty of water. Never leave kids or pets in a car unattended.

Map showing Extreme Heat Warnings and Heat Advisories across Iowa for Monday, with maximum heat index values ranging from 100 to 115 degrees Fahrenheit. Text highlights heat safety practices, including taking breaks in the AC or shade, drinking plenty of water, and never leaving children or pets unattended in cars.

Des Moines Area Forecast Discussion

Seven-day Weather Risk Overview

The graphic shows the daily risk summary for 7 days. Daily risk is based on highest risk factor for that day.

	Sun 7/26	Mon 7/27	Tue 7/28	Wed 7/29	Thu 7/30	Fri 7/31	Sat 8/1
risk level	out of 10	out of 10			out of 10	out of 10	out of 10

No risk

Low risk

High risk

See the detailed risk analysis

Radar

Time shown:

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dBz	Intensity
−35–0	Extremely light (drizzle/snow)
0–20	Very light precipitation or general clutter
20–40	Light precipitation
40–50	Moderate precipitation
50–65	Heavy precipitation or some hail
>65	Extremely heavy precipitation including water-coated hail

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Weather Forecasting Office

Des Moines Forecast Office