Our fall plantings are producing on into June, at least. I usually start bushhogging about June, just to keep it from getting too tall.
Are you growing any durana clover in your fields? If you've got that kind of moisture then it should thrive and possibly even last all summer for you. I'm fortunate here at home that I have all kinds of soil conditions to play with across a very short span. Where I have my really moist areas the durana is growing like mad.
