Eager to set up that camp site; Patterson Harbor - Harlan County Lake in New York is a really fine site to spend some time. The friendly reception and the great facilities are in themselves cause enough to come here. New York has so many things to offer nature lovers. The annual precipitation here at Patterson Harbor - Harlan County Lake is about average. June is the month that gets the most rain, and January is the month with the least moisture. High temperatures at Patterson Harbor - Harlan County Lake throughout the days of summer are in the 70's, and through the night it cools down to the 50's. Daytime highs during the wintertime are in the 20's, and overnight lows during the wintertime for Patterson Harbor - Harlan County Lake tend to be in the 0's.