The Iowa Environmental Mesonet (IEM) collects environmental data from cooperating members with observing networks. The data are stored and made available on this website.
Dry Stretch of May
Posted: 19 May 2025 05:30 AM, Views: 495
Sunday was the last of a very dry stretch of May days with very little precipitation over Iowa. Based on unofficial IEM estimates, the statewide rainfall total between 3 and 18 May was just 0.17 inches. For these cherry picked days, this is easily the lowest total on record as shown by the featured chart. The simple average for this period is just north of two inches. This dry period has certainly allowed farmers to make significant planting progress and the rainfall coming this week is very much welcome to help get these newly planted crops developing.
Previous Years' Features
CoCoRaHS Update
Posted: 29 Jan 10:29 AM
13-16 Jan Network Issue [resolved]
Posted: 15 Jan 10:13 AM
Alaska Marine Warnings
Posted: 8 Jan 9:28 AM
Wagering on ASOS Temperatures
Posted: 4 Dec 10:39 AM
25 Sep Website Issues [resolved]
Posted: 25 Sep 8:04 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.
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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