Originally Posted by BajaHanger
Did you have a tarp up? That should prevent frost from collecting on your gear. Just my $.02.
At that temp, frost shouldnt form if you were in the bag. Moisture will however. A tarp is usually enough to keep the dew (and frost) from forming for the most part.
Anytime its cold, moisture will form in/on the bag from you. Its not usually a big deal unless your out in the cold for a long trip.