Precipitation patterns will be altered, with projected increases in total annual precipitation distributed unevenly among colder months (more) and warmer months (less).

All global climate models agree that there will be changes in precipitation patterns across the Central Appalachians, but there is large variability among projections of future precipitation. Most climate models project increases in annual preciptation. Seasonally, winter and spring are also generally projected to have increases in precipitation during the next century. Projections of summer and fall precipitation vary more widely, with many models projecting decreased precipitation or only very slight increases (<10%).