Temperature Situation

Hey guys, first time grower, really excited that all 12 of my plants are doing incredibly well. They've been in pots since 4/18, outdoors, receiving about 6 hours of direct sunlight per day. They're almost all growing really well, with the tallest at about 4 or 5 inches now. However, I'm going to be having problems with temperature in the near future, forecasted for 39 on Tuesday night and 41 on Wednesday night. I don't think it will frost, but will these low temperatures kill the plants? If so, what can I do? They've been doing really well with night time temps in the low 50's so far. Thanks for any help.

if it doesn't freeze then they should be fine.

get some 20 oz bottles cut off the tops and cover the plant that day when its still warm out but dont keep them covered for to many days or they could die,im pretty sure that should work as long as it doesnt like snow and shit

Exactly - if it doesn't freeze they'll be ok.
And plants on that size will probably survive a night of freeze.