Found a site that tells what the soil temps is across Iowa

[iowathumper]

Latest Iowa 4-Inch Soil Temperatures - IowaWeather.com

The following maps are county analyses of four inch depth soil temperatures across the state of Iowa from yesterday, two, and three days ago.

iowaweather.com

Thought this was pretty cool

 

[deerdown]

That's pretty cool!

 

[Sligh1]

Handy!!!! Guessing we at a lower temp this year vs past averages.

 

[Tmayer13]

Farmers typically use this one:

IEM :: ISU Soil Moisture County Temperature Estimates

Iowa Environmental Mesonet of Iowa State University

mesonet.agron.iastate.edu