The Iowa Environmental Mesonet (IEM) collects environmental data from cooperating members with observing networks. The data are stored and made available on this website.

IEM Daily Feature

Still Awaiting Sub-32°F

Posted: 09 Nov 2026 05:30 AM, Views: 230
While most of the state experienced sub-32°F low temperatures over this past weekend, the Des Moines Airport and a handful of other isolated locations failed to do so. It is getting very late in the season to not have a sub freezing level temperature! The featured chart presents the period each year between the last spring season and first fall season sub 32°F temperature for Des Moines. The right hand side panel lists out the earliest and latest dates for each. The record shown for Des Moines is 13 November. The forecast for this week has freezing temperatures returning Thursday Night, so 2026 may come up a day short of at least tying the record!
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Previous Years' Features
Avoca I-80 WB, IA Webcam:
News Items  

7 Oct NWS Data Outage [resolved]
Posted: 7 Oct 9:36 AM

8 Oct Partial Outage [resolved]
Posted: 6 Oct 1:26 PM

5 Sep NWS Data Outage
Posted: 5 Sep 2:03 PM

4 Sep ISU Network Issue [resolved]
Posted: 4 Sep 11:03 AM

12 Aug Service Degradation [resolved]
Posted: 12 Aug 6:13 AM

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Soil Temperatures

Data from the Iowa State Soil Moisture Network is found on this website and daily soil temperature averages are used to produce the highlighted analysis.

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The IEM combines data from participating networks into products like maps shown above and web applications to analyze the data.

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