Williamsport, PA 17703 Weather

Lycoming County4:18 AM EDT41.24°N, 77.00°W

Current conditions

Clear
41°
Clear
Feels like 41°
High 63°·Low 37° tonight
WindCalm
Humidity87%
Dew point37°
Pressure30.31 inHg
Visibility10 mi
Cloud cover4%
UV index0 Low
Sunrise7:27 AM
Sunset6:20 PM

Observed at Williamsport - Lycoming County Airport · 33 min ago

Forecast

10-day

  • Overnight

    Clear, with a low around 37. West wind around 3 mph.

  • Wednesday

    Sunny, with a high near 63. Northwest wind 0 to 5 mph.

  • Wednesday Night

    Mostly clear, with a low around 35. Northwest wind around 6 mph.

National Weather Service forecast updated 1 hr ago.

Hourly

Hourly forecast
  1. Now Clear 39°
  2. 5 AM Clear 38°
  3. 6 AM Sunny 37°
  4. 7 AM Sunny 37°
  5. 8 AM Sunny 37°
  6. 9 AM Sunny 38°
  7. 10 AM Sunny 44°
  8. 11 AM Sunny 50°
  9. 12 PM Sunny 54°
  10. 1 PM Sunny 59°
  11. 2 PM Sunny 61°
  12. 3 PM Sunny 63°
  13. 4 PM Sunny 63°
  14. 5 PM Sunny 62°
  15. 6 PM Clear 58°
  16. 7 PM Mostly Clear 54°
  17. 8 PM Mostly Clear 48°
  18. 9 PM Mostly Clear 45°
  19. 10 PM Mostly Clear 43°
  20. 11 PM Mostly Clear 41°
  21. Thu12 AM Mostly Clear 40°
  22. 1 AM Clear 39°
  23. 2 AM Clear 38°
  24. 3 AM Clear 36°

10-day forecast

Details
  1. TonightOct 20 Clear Clear37°
  2. TodayOct 21 Sunny Sunny35°63°
  3. ThuOct 22 Patchy Frost then Sunny Patchy Frost then Sunny35°64°
  4. FriOct 23 Patchy Frost then Sunny Patchy Frost then Sunny31°58°
  5. SatOct 24 Areas Of Frost then Sunny Areas Of Frost then Sunny33°60°
  6. SunOct 25 Patchy Frost then Sunny Patchy Frost then Sunny38°64°
  7. MonOct 26 Mostly Sunny Mostly Sunny43°67°
  8. TueOct 27 Partly Sunny Partly Sunny62°
  9. WedOct 28 Rain Rain0.15 in44°51°
  10. ThuOct 29 Partly cloudy Partly cloudy37°55°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
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Weather news near Williamsport

More weather news

Air quality

29
Good
Fine particles (PM2.5)

Air quality is satisfactory, and air pollution poses little or no risk.

Forecast

  • WedGood (25)
  • ThuGood (25)
  • FriGood

Williamsport, PA reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:27 AM
Sunset 6:20 PM
Daylight 10 h 52 min (−2 min 36 s tomorrow)
Waxing Gibbous · 75% lit
Moonrise 4:00 PM Moonset 2:24 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low61° / 41°
Record high86° (1947)
Record low24° (1972)
Wettest2.89 in (1995)
Month to date1.71 in (normal 2.50 in)

Williamsport Area, records since 1895. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in CTP, issued 1 hr ago

What Has Changed

* No significant changes

Key Messages

1) Dry and seasonable weather continues into the last week of October

Discussion

KEY MESSAGE 1: Dry and seasonable weather continues into the last week of October

The seasonably sensational stretch weather continues into the last week of October. This rain-free pattern is highlighted by sunny and warm afternoons with low humidity followed by clear and chilly moonlit nights with areas of frost and river valley fog. Afternoon dewpoints were adjusted lower into late week to capture the observed mixing trends that have occurred over the past few days. Minimum temps were also reduced by a few degrees to account for ideal nighttime radiational cooling.

Aviation

High pressure and very dry air are allowing for continued dry conditions and clear skies across the majority of the forecast area this morning. VFR conditions are virtually certain through 06Z Thursday at all of central Pennsylvania's airfields. The only hiccup in that forecast will be where HREF ensemble guidance (which has shown fair skill in honing in where fog will form the past couple of days) continues to outline northern tier for some chances of fog formation across NW PA over the next couple of hours, which will bring some chances for lower flight categories (IFR and below) to BFD in the 06-12Z Wednesday timeframe. Confidence remains too low (~20-30%) for inclusion in the 06Z TAF package, but will remain a lower- probability solution.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.