Yup...dewpoints are low so you get these mini cold domes building in heavily forested areas where the wind can’t mix down. The melting and evaporational cooling really helps sustain that cold supply. I get it here in the afternoon from the back woods to my west. I can walk out a bit into the woods and feel the “front” hit me. In the evening it’s a continual battle on my Davis with the temp jumping sometimes 5F in a minute depending on if the wind lets up and the cold air oozes in or if we get a period of 5-10mph+ and mix it out.