Pennsylvania · NWS CTP office

Williamsport, PA weather

It is 39°F and clear at Williamsport - Lycoming County Airport as of Oct 28, 5:05 AM EDT. Overnight: Mostly Cloudy, low near 39°F, 1% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 2:21 AM EDT.

Updated Oct 28, 5:26 AM EDT (snapshot)

Current conditions

Temperature

39°F

Clear · feels like 37°F

Wind

WSW 3 mph

Humidity 87% · dew point 36°F

Pressure · visibility

30.41 inHg

Visibility 10 mi

Observed at Williamsport - Lycoming County Airport (KIPT), Oct 28, 5:05 AM EDT. Station readings can lag or be missing.

Alerts for this area

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

Around the NWS CTP forecast area

No active alerts in zones served by the CTP office near Williamsport.

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 Williamsport (local time)
TimeTempForecastPrecip. chanceWind
Wed 7 AM39°FMostly Cloudy1% 0 mph
Wed 8 AM39°FMostly Cloudy1%E 1 mph
Wed 9 AM41°FMostly Cloudy1%E 2 mph
Wed 10 AM45°FMostly Cloudy1%E 2 mph
Wed 11 AM48°FMostly Cloudy1%SE 3 mph
Wed 12 PM52°FMostly Cloudy1%SE 5 mph
Wed 1 PM56°FCloudy1%SE 6 mph
Wed 2 PM60°FMostly Cloudy1%S 6 mph
Wed 3 PM61°FMostly Cloudy1%S 6 mph
Wed 4 PM62°FMostly Cloudy1%S 6 mph
Wed 5 PM63°FPartly Sunny1%S 5 mph
Wed 6 PM61°FPartly Cloudy1%SE 3 mph
Wed 7 PM58°FPartly Cloudy1%SE 2 mph
Wed 8 PM56°FPartly Cloudy0%E 1 mph
Wed 9 PM52°FPartly Cloudy0% 0 mph
Wed 10 PM50°FPartly Cloudy1% 0 mph
Wed 11 PM48°FPartly Cloudy1%E 1 mph
Thu 12 AM47°FPartly Cloudy1% 0 mph
Thu 1 AM46°FMostly Clear1% 0 mph
Thu 2 AM45°FPatchy Fog1% 0 mph
Thu 3 AM45°FPatchy Fog1% 0 mph
Thu 4 AM44°FPatchy Fog1% 0 mph
Thu 5 AM43°FAreas Of Fog1% 0 mph
Thu 6 AM43°FAreas Of Fog0% 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 Williamsport can differ.

7-day forecast

Overnight

Low 39°F

Mostly cloudy, with a low around 39. Wind around 0 mph.

Wednesday

High 63°F·Low 41°F

Mostly cloudy, with a high near 63. East wind 0 to 6 mph.

Wednesday Night: Areas of fog after 2am. Partly cloudy, with a low around 41. East wind 0 to 3 mph.

Thursday

High 70°F·Low 50°F

Areas of fog before 11am. Mostly sunny, with a high near 70. South wind 0 to 5 mph.

Thursday Night: Partly cloudy, with a low around 50. Southwest wind 0 to 3 mph.

Friday

High 67°F·Low 38°F

Sunny, with a high near 67.

Friday Night: Mostly clear, with a low around 38.

Saturday

High 63°F·Low 39°F

Mostly sunny, with a high near 63.

Saturday Night: Mostly cloudy, with a low around 39.

Sunday

High 65°F·Low 45°F

Mostly cloudy, with a high near 65.

Sunday Night: A slight chance of rain showers after 1am. Mostly cloudy, with a low around 45.

Monday

High 65°F·Low 48°F

A chance of rain showers. Mostly cloudy, with a high near 65. Chance of precipitation is 40%.

Monday Night: A chance of rain showers. Mostly cloudy, with a low around 48. Chance of precipitation is 30%.

Tuesday

High 65°F

A chance of rain showers. Mostly cloudy, with a high near 65.

Nearby cities

Larger cities in the area

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

About this forecast

Forecast office
Williamsport is served by the National Weather Service CTP forecast office, forecast zone PAZ046, county zone PAC081.
Location used
The Census Bureau's internal point for Williamsport (41.2400, -77.0356), in Lycoming County. Population: 27,628 (2024 estimate), number 20 of the 30 Pennsylvania cities on this site.
Radar
Nearest NWS radar: KCCX. View it on radar.weather.gov.

On Amazon

Weather-ready picks

As an Amazon Associate I earn from qualifying purchases.

Home & kitchen LEVOIT Air Purifier An air purifier for smoky or high-pollen days indoors. View on Amazon → Men’s fashion Hanes Fleece Hooded Sweatshirt A warm hoodie for chilly mornings. View on Amazon → Fitness & outdoors Stanley Quencher H2.0 Tumbler A big tumbler for long commutes and outdoor days. View on Amazon → Fitness & outdoors LifeStraw Personal Water Filter A personal water filter worth adding to an emergency kit. View on Amazon →

Sources

  • Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/41.24,-77.0356 (forecast issued Oct 28, 2:21 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.

More Pennsylvania cities