Frost on the Pumpkin? Not Quite

One temperature gauge said it hit 32.3 degrees last night and the other says 33 degrees.  Either way, it stayed above freezing, just barely.  I ran the sprinklers three times this morning.  The water from the irrigation is going to easily be 10-20 degrees warmer than the air, so it will actually warm the plants.  I'm sure there was a little damage to the plants last night, but it should be pretty minimal.