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

Done with snowfall?

Posted: 23 Apr 2019 05:37 AM, Views: 358
The featured chart displays the date, amount, and the duration that the last snowfall of the season stuck around for Des Moines. The calendar now says 23 April, which comes in at about 92% on the chart. So about 8% of all previous years had another measurable snowfall on this date or later. The forecast continues to be optimistic that we are done with the snow this season, but it would certainly help to have another week pass by to be more confident.
Rate Feature

Previous Years' Features
Rockwell City, IA Webcam:
News Items  

IEM Outage [resolved]
Posted: 10 Apr 05:39 AM

Iowa RWIS Outage [resolved]
Posted: 08 Apr 12:55 PM

Windrose plot improvements
Posted: 01 Apr 08:51 AM

Peak Wind Gust added to ASOS download
Posted: 06 Mar 12:28 PM

Orange City AWOS Removed
Posted: 28 Feb 01:33 PM

Sign up for the Daily Bulletin

Current Website Performance:
Bandwidth: 8.4 MB/s
Requests/Second: 1,758

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.


Besides point observations of precipitation, the IEM also processes gridded rainfall products made available by NOAA. This information is archived and made available in GIS ready formats.

Download Precipitation for GIS »

Current Data

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

More current products »


ISU Agronomy
IIHR - University of Iowa