How cold does it have to be??????????

I'm going to winterize my boat this Thursday, but I'm concerned about the temp for the next couple of day's. It's supposed to get to 31 degrees by early morning, and warm back up to 50's by afternoon for the next couple of day's. I keep my boat at an indoor storage facility which is basically an unheated aluminum pole barn with no electricity. Do you think it will be alright with the temp dropping below freezing for a couple of hours, or should I head down there after work tonight.

should be ok

you'll be fine. i keep my boat in a enclosed non heated pole barn and it gets down to the low 20's for a couple weeks at night but warms up to the mid 50s. for it to crack the temp really needs to stay below freezing temps for 12 plus hours. with it warming up it wont hurt it. i would imagine that in the barn it'll be at least in the high 30's at night.

you should be fine. Someone did an elaborate study of the temp change on several parts of the boat, including manifolds and the block. IIRC, it takes 6 or 8 hrs for the engine bay to reach ambient temps.

Thanks for the quick responses, you have contributed to a peaceful night sleep.