I am not in the Midwest but I broadcasted some ryegrass about 3 weeks ago. I kept looking for the grass to come up because we had a week of above normal temps (low 60's) and never saw anything till this weekend. Then all of a sudden it was coming up everywhere. If you have a good situation where you can get good soil contact after a shower of rain I would give it a try. You could lose your time and seed and make nothing, or you could get a tremendous amount forage or hay with not too much cost. Just addressing the ryegrass question.
Edit to note that the ryegrass will be competing with the clover and may crowd it out, and the ryegrass will produce best if you add nitrogen which is not good for the clover. You may be better off with grain rye to mix the clover with as it will die out quicker.