The Iowa Environmental Mesonet (IEM) collects environmental data from cooperating members with observing networks. The data are stored and made available on this website.
Top Two Day Rainfall
Posted: 07 Jul 2026 05:30 AM, Views: 670For the Ames NWS COOP site at the ISU Ag Farm southwest of town, the two day precipitation total from the deluge last week came in third largest on record for the site. The site reported a 24 hour total of 2.17" for the afternoon report on Friday and then 4.20" on Saturday. The heavy rainfall events took a break on Monday for Iowa with Tuesday expected to be mostly dry as well. Storms will return Wednesday and likely produce locally heavy rainfall totals again with ample moisture around and slow storm motions.
Rate Feature
Previous Years' Features
2025IEM One App
2021July Lows
2019Two Week Totals
201570s in July
2011Barely any wind
2010Waterloo Event
2009A few inches
2002Foggy
De Witt (US 30/US 61), IA Webcam:
Most Popular (List Apps)
ISU Network Outage [resolved]
Posted: 12 May 11:06 PM
1 April IEM Outage [resolved]
Posted: 2 Apr 10:55 AM
Tracking TAF Amendments
Posted: 13 Feb 10:28 AM
IEM Archival Update
Posted: 24 Sep 11:07 PM
TAF Archive Fixes
Posted: 22 Aug 7:28 AM
Sign up for the Daily Bulletin
Current Website Performance:
Bandwidth: 242.1 MB/s
Total Website: 2,676 req/s
API/Data Services: 146.0 req/s
API Success: 100%
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.




