Johnson City has a humid subtropical climate , with warm summers and cool winters. Temperatures in Johnson City are moderated somewhat by its elevation and proximity to the Appalachian Mountains. Precipitation is abundant, with an average of 45.22 in (1,149 mm). Summer is typically the wettest part of the year, while early autumn is considerably drier. Snowfall is moderate and sporadic, with an average of 15.6 in (40 cm).
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