The crookneck are definitely fast - they can be canned by the way - people laugh at that notion, and the joke is on them.Ernie, sorry, but only have had winter squash survive a mild frost when covered. But some yellow summer squash makes in 45-60 days, when you start with warm Sept temps...; go for it! Good luck.
Same temps and Bloomsdale results here winter 2013/2014. We had Fordhook Swiss Chard replant year after year 10 years ago.the yellow crook neck is 41 days...but i would try one of the zucs too.
you should try the bloomsdale spinach as i had great sucess with it this past fall and winter with it surviving temps as low without cover to lows of -10f on south slope.come spring i had fresh leaves to harvest in a matter of days and until the coldest temps hit in winter i was harvesting every other day.
i planted alaska peas a week ago and it poured the rain a few days and high humidity and now i have peas up 2 to 3 inches tall with multiple leaves on stems...i think i will get a harvest...i have harvested them as late as thanksgiving in past.
sidenote about bloomsdale in raised bed ..i let it go to bloom once the heat came on and many seed fell off the stems...guess what...when conditions got right the past few weeks...wal la..instant beautiful stand of spinach....without me planting or doing a thing.i will be harvesting in a week or two....go permaculture no work gardening....lol