Bethlehem, PA Weather

Bethlehem has a humid continental climate (Dfa). Summers are typically hot and humid, fall and spring are generally mild, and winter is cold. Precipitation is distributed throughout the year, with thunderstorms in the summer, showers in spring and fall, and snow in winter. The average high temperature varies widely, from 36 °F (2 °C) in January to 84 °F (29 °C) in July. The highest recorded temperature was 105 °F (41 °C), while the lowest recorded temperature was −16 °F (−27 °C).

Bethlehem falls under the USDA 6b Plant Hardiness zone.