The most pleasant months of the year for the 18333 zip code are September, June and May. In the 18333 zip code, there are 4 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for the 18333 zip code with an average high temperature of 85.1°, which ranks it as warmer than most places in Pennsylvania. February is the snowiest month in the 18333 zip code with 11.5 inches of snow, and 6 months of the year have significant snowfall. July is the most humid month, though it is still relatively mild compared to many other places.