Francis E Walter Dam, PA Climate

Climate Insight: Francis E Walter Dam, PA

An annual average temperature of 47°F, ranging from a mean daily high of 56°F to a mean daily low of 37°F is what the NOAA 1991–2020 climate normals report for Francis E Walter Dam, Pennsylvania. July is typically the warmest month of the year, while January is the coldest. That baseline comes from station USC00363018 and thirty years of averaging, so it reflects a typical month rather than any one year's swings.

Francis E Walter Dam averages 48.8 inches of precipitation a year, predominantly as rainfall, and that matters as much to daily life here as temperature does. The frost-free season averages 152 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near May 7 and the first fall freeze near October 6. As for energy demand, 7,024 heating degree days and 345 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.

On PlainClimate's composite comfort index, Francis E Walter Dam scores 64/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above turn that into a planning tool: expect the mildest highs and lows in the shoulder seasons, July-driven heat at the peak of summer, and January-driven cold at the depth of winter. Every number here is a thirty-year average, not a forecast, so any given year can and does run warmer, cooler, wetter, or drier than the normal.