Freezing tonight?

Wow, I step away from the weather updates for a few days and it takes a turn for the cold! Well, cold for us anyway :) check this out:

My dilemma: I really want to plant my sprouts. I have tried twice now and something has always come up. I have 4 tomato plants, 8 pepper plants, 4 zucchini plants, and 4 squash plants. I even arranged for my mom to come over and watch the kiddos so I could give it my undivided attention. I guess I will make my decision when I wake up in the morning...