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

Days of 80+°F Highs

Posted: 11 Sep 2026 05:30 AM, Views: 384
With high temperatures on Friday expected to reach the lower 80s for much of Iowa and a handful of days over the coming week as warm, it is a good time to check in on the number of days per year with a high temperature of at least 80°F for Ames. The side tables list the top 10 years with the most and least number of days. The bars are colored by their departure from a simple period of record average (black line at 91 days). The 2026 total hasn't quite breached the top 10, but is already well above most years over the past two decades. It is also the seventh consecutive year above average.
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Previous Years' Features
Marion, IA Webcam:
News Items  

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

MRMS Archive Downsizing
Posted: 9 Aug 4:15 PM

26-27 July 2026 Record Dew Points
Posted: 27 Jul 8:08 PM

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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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