Pennsylvania · NWS PHI office

Bethlehem, PA weather

It is 39°F and clear at Allentown, Lehigh Valley International Airport as of Oct 28, 5:05 AM EDT. Overnight: Partly Cloudy, low near 38°F. Forecast from the National Weather Service, issued Oct 28, 4:08 AM EDT.

Updated Oct 28, 5:18 AM EDT (snapshot)

Current conditions

Temperature

39°F

Clear

Wind

Calm

Humidity 93% · dew point 37°F

Pressure · visibility

30.43 inHg

Visibility 10 mi

Observed at Allentown, Lehigh Valley International Airport (KABE), Oct 28, 5:05 AM EDT. Station readings can lag or be missing.

Alerts for this area

No active NWS alerts cover the Bethlehem forecast zone right now.

Around the NWS PHI forecast area

No active alerts in zones served by the PHI office near Bethlehem.

From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. No alerts are active anywhere in Pennsylvania.

For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.

Next 24 hours

Hourly forecast for Bethlehem (local time)
TimeTempForecastPrecip. chanceWind
Wed 7 AM38°FPatchy Fog0% 0 mph
Wed 8 AM38°FPatchy Fog0% 0 mph
Wed 9 AM43°FMostly Sunny0% 0 mph
Wed 10 AM49°FMostly Sunny0% 0 mph
Wed 11 AM53°FMostly Sunny0% 0 mph
Wed 12 PM56°FMostly Sunny0% 0 mph
Wed 1 PM59°FPartly Sunny0% 0 mph
Wed 2 PM61°FPartly Sunny0% 0 mph
Wed 3 PM62°FPartly Sunny0% 0 mph
Wed 4 PM62°FPartly Sunny0% 0 mph
Wed 5 PM61°FPartly Sunny0% 0 mph
Wed 6 PM59°FMostly Cloudy0% 0 mph
Wed 7 PM55°FPartly Cloudy0% 0 mph
Wed 8 PM53°FPartly Cloudy0% 0 mph
Wed 9 PM52°FMostly Clear0% 0 mph
Wed 10 PM51°FMostly Clear0% 0 mph
Wed 11 PM49°FMostly Clear0% 0 mph
Thu 12 AM49°FMostly Clear0% 0 mph
Thu 1 AM48°FMostly Clear0% 0 mph
Thu 2 AM47°FMostly Clear0% 0 mph
Thu 3 AM47°FPartly Cloudy0% 0 mph
Thu 4 AM46°FMostly Cloudy0% 0 mph
Thu 5 AM46°FMostly Cloudy0% 0 mph
Thu 6 AM46°FPartly Sunny0% 0 mph

Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Bethlehem can differ.

7-day forecast

Overnight

Low 38°F

Partly cloudy, with a low around 38. Wind around 0 mph.

Wednesday

High 65°F·Low 42°F

Partly sunny, with a high near 65. East wind around 0 mph.

Wednesday Night: Partly cloudy, with a low around 42. Wind around 0 mph.

Thursday

High 70°F·Low 50°F

Mostly sunny, with a high near 70. Northwest wind 0 to 5 mph.

Thursday Night: Partly cloudy, with a low around 50. Southwest wind 0 to 5 mph.

Friday

High 70°F·Low 39°F

Sunny, with a high near 70.

Friday Night: Mostly clear, with a low around 39.

Saturday

High 64°F·Low 40°F

Mostly sunny, with a high near 64.

Saturday Night: Mostly cloudy, with a low around 40.

Sunday

High 67°F·Low 46°F

Partly sunny, with a high near 67.

Sunday Night: Mostly cloudy, with a low around 46.

Monday

High 67°F·Low 49°F

A chance of rain showers after 7am. Mostly cloudy, with a high near 67. Chance of precipitation is 30%.

Monday Night: A chance of rain showers. Mostly cloudy, with a low around 49. Chance of precipitation is 30%.

Tuesday

High 67°F

A chance of rain showers. Partly sunny, with a high near 67.

Nearby cities

Larger cities in the area

Other cities in Northampton County

See every city we cover in Pennsylvania, or check all active alerts.

About this forecast

Forecast office
Bethlehem is served by the National Weather Service PHI forecast office, forecast zone PAZ062, county zone PAC095.
Location used
The Census Bureau's internal point for Bethlehem (40.6264, -75.3679), in Northampton County. Population: 79,453 (2024 estimate), number 6 of the 30 Pennsylvania cities on this site.
Radar
Nearest NWS radar: KDIX. View it on radar.weather.gov.

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Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/40.6264,-75.3679 (forecast issued Oct 28, 4:08 AM EDT).
  • Official forecast page: forecast.weather.gov.
  • City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
  • Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.

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