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City of Bethlehem, PABethlehem, PA Weather Forecast
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Bethlehem Weather Forecast
| TODAY | TONIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT |
 |  |  | | |  | | | |  | | |
| Mostly Sunny | Chance of Showers | Showers | Showers Likely | Mostly Sunny | Mostly Clear | Sunny | Mostly Clear | Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy |
| Hi: 65°FHi: 18°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 45°FLo: 7°C | Hi: 51°FHi: 11°C | Lo: 35°FLo: 2°C | Hi: 55°FHi: 13°C | Lo: 35°FLo: 2°C | Hi: 61°FHi: 16°C | Lo: 41°FLo: 5°C | Hi: 65°FHi: 18°C | Lo: 41°FLo: 5°C |
| POP: 80% | POP: 90% | POP: 70% |
POP = Probability of Precipitation.
Weather Outlook Updated: 400 AM EDT Thu Oct 15 2026 
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Issued: 125 PM EDT Thu Oct 15 2026
Key Messages
1. A warm front lifts north through the region tonight.
2. A strong cold frontal passage Friday evening will bring windy conditions, showers and potential for some thunderstorms, and colder temperatures into the weekend.
3. Widespread frost and freeze conditions are increasingly likely Saturday night.
Discussion
... KEY MESSAGE 1...A warm front lifts north through the region tonight.
Northerly winds will usher a cooler and drier airmass into the region. Surface dew points will fall into t...