The following links contain information gathered from volunteer observers located all across the Tri-State region (southeast Minnesota, northeast Iowa, western Wisconsin). The information is gathered in the early morning hours, then compiled and quality controlled for accurracy. Many of the sites listed on the plots are from Cooperative Observers, with climate records dating back many, many years.
Note the plots are of 24 hour data, taken from 7 am to 7 am. They are not "daily" data, meaning from midnight to midnight.