Climate & Weather in Bethlehem
Bethlehem's climate is a real, genuine four-season pattern typical of the Lehigh Valley, with warm-to-hot summers, cold winters, and comparatively modest snowfall.
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Learn moreWarm-to-hot summers, cold winters
Bethlehem's July average high runs approximately 85°F (low ~64°F); the January average low runs approximately 21.6°F.
Comparatively modest snowfall
Annual snowfall runs approximately 33 inches -- genuinely less than the substantial lake-effect totals documented in this project's companion erie-pa.js record, since Bethlehem sits well inland from the Great Lakes.
Four real, distinct seasons
As across the Lehigh Valley, Bethlehem experiences four genuinely distinct seasons typical of the broader Mid-Atlantic/eastern Pennsylvania region.
Key takeaways
- Bethlehem's July average high runs approximately 85°F; January average low approximately 21.6°F.
- Annual snowfall (~33 inches) runs meaningfully lower than lake-effect-exposed erie-pa.js.
- Bethlehem experiences four distinct seasons typical of the Lehigh Valley/Mid-Atlantic region.
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