The Iowa State University "Ag Climate" network is one of the nation's oldest automated weather observation networks with data dating back to 1986. This network of stations, located at ISU Research Farms, is polled once per day by the High Plains Climate Center, who then sends the data to us. Data for the previous day is available by 7 AM of the next day.

Quick Download Links:     Hourly Data     Daily Summary Data

Information:

• Location of observing stations in Iowa.
• Information about network stations.
• Information on PET calculations done by the High Plains Climate Center.

Rainfall Disclaimer:

The Ag Climate network uses a non-heated tipping bucket rain gage and is unable to measure snowfall. If you are interested in higher quality precipitation data, check out the NWS COOP network of human observations.