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

2026 Daily Departures

Posted: 09 Jul 2026 05:00 AM, Views: 711
The featured chart presents the daily high and low temperature climatology, 2026 observations, and the departure between the two for Ames. The chart nicely shows the cooler than average weather that dominated the last half of June has been replaced by warmer weather to start off July. The bottom panel, which plots difference between observations and the climatology average, is interesting as while highs and lows generally directionally match, the magnitudes are different with high temperature departures typically having larger absolute values than lows.
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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.

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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