What is wrong with our lawn?
Not likely a lack of water given our spring and summer weather. But it could be related to standing water. This could be a patch disease but it could also be an effect of herbicide drift or a soil or sunlight issue. Pull up a section and check if there are roots under the dry sections. If this is happening over the entire yard, I would suggest a soil test as well. The following website gives some things to look for to help you understand the problem. 1.) http://apps.extension.umn.edu/garden/diagnose/plant/turf/irregular/ 2.) http://soiltest.cfans.umn.edu/testing-services/lawn-garden 3.) https://extension.umn.edu/lawns-and-landscapes/lawn-care