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

2025 Daily Highs + Lows

Posted: 08 Oct 2025 05:30 AM, Views: 442
The featured chart presents daily high and low temperature climatology for Ames along with 2025 observations. A lot of information is packed into one chart here with the range between the average high and low temperature shaded in green and then the area between those averages and the daily record maximum and minimum values shaded in red and blue respectively. The brown bars are the range between the 2025 daily high and low temperatures. Qualitatively, you can see we have spent very little time this warm season with low temperatures within the blue area (below average). The two cool periods of late August and early September are about all to speak of for such periods since early April.

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Sidney (I-29/IA 2), IA Webcam:
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Posted: 24 Sep 11:07 PM

TAF Archive Fixes
Posted: 22 Aug 7:28 AM

Website Update
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New IEM LSR App
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CoCoRaHS Update
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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.

Precipitation

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Current Data

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

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