South Williamsport, PA Weather

Lycoming County3:03 PM EDT41.23°N, 77.00°WElevation 522 ft

Current conditions

Clear
68°
Clear
Feels like 68°
High 69°·Low 41°
WindSW 8 mph
Humidity46%
Dew point46°
Pressure30.20 inHg
Visibility10 mi
Cloud cover3%
UV index2 Low
Sunrise7:33 AM
Sunset6:13 PM

Observed at Williamsport - Lycoming County Airport · 18 min ago

Forecast

10-day

  • This Afternoon

    Sunny, with a high near 69. West wind around 5 mph.

  • Tonight

    Partly cloudy, with a low around 41. Northwest wind around 3 mph.

  • Tuesday

    Mostly sunny, with a high near 61. North wind 0 to 3 mph.

National Weather Service forecast updated 1 hr ago.

Hourly

Hourly forecast
  1. Now Sunny 68°
  2. 4 PM Sunny 69°
  3. 5 PM Sunny 68°
  4. 6 PM Clear 65°
  5. 7 PM Mostly Clear 62°
  6. 8 PM Mostly Clear 57°
  7. 9 PM Mostly Clear 54°
  8. 10 PM Partly Cloudy 53°
  9. 11 PM Partly Cloudy 51°
  10. Tue12 AM Partly Cloudy 51°
  11. 1 AM Mostly Cloudy 49°
  12. 2 AM Mostly Cloudy 48°
  13. 3 AM Mostly Cloudy 47°
  14. 4 AM Mostly Cloudy 46°
  15. 5 AM Partly Cloudy 44°
  16. 6 AM Mostly Sunny 43°
  17. 7 AM Mostly Sunny 41°
  18. 8 AM Mostly Sunny 42°
  19. 9 AM Mostly Sunny 45°
  20. 10 AM Sunny 48°
  21. 11 AM Sunny 50°
  22. 12 PM Sunny 53°
  23. 1 PM Sunny 55°
  24. 2 PM Sunny 58°

10-day forecast

Details
  1. TodayOct 26 Sunny Sunny41°69°
  2. TueOct 27 Mostly Sunny Mostly Sunny38°61°
  3. WedOct 28 Partly Sunny Partly Sunny44°63°
  4. ThuOct 29 Mostly Sunny Mostly Sunny48°69°
  5. FriOct 30 Mostly Sunny Mostly Sunny45°73°
  6. SatOct 31 Partly Sunny Partly Sunny48°67°
  7. SunNov 1 Mostly Cloudy then Slight Chance Rain Showers Mostly Cloudy then Slight Chance Rain Showers45%52°66°
  8. MonNov 2 Cloudy Cloudy49°70°
  9. TueNov 3 Cloudy Cloudy0.18 in58°72°
  10. WedNov 4 Cloudy Cloudy0.08 in57°64°

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

More weather news

Air quality

34
Good
Fine particles (PM2.5)

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

Forecast

  • MonGood (40)
  • TueGood

Williamsport, PA reporting area · 2 hrs ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:33 AM
Sunset 6:13 PM
Daylight 10 h 39 min (−2 min 32 s tomorrow)
Full Moon · 99% lit
Moonrise 6:03 PM Moonset 8:07 AM
Full moon Nov 24 New moon Nov 9

Almanac

Monthly
Normal high / low59° / 39°
Record high81° (1963)
Record low20° (1952)
Wettest0.94 in (1913)
Month to date1.71 in (normal 3.05 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) Rain-free conditions will persist through the end of October and possibly the first day of November

Discussion

KEY MESSAGE 1: Rain-free conditions will persist through the end of October and possibly the first day of November

Noon Update... The cold front has made it to the USA/Canadian border, as this front has limited moisture and will eventually lead to some cloud cover this evening into the night. For the meantime clear skies continue to dominate the region. Once the front passes through, clear skies and high pressure returns. Large diurnal variations will continue with highs in the 60s and lows in the 30s.

Previous discussion... An area of high pressure will settle south across the Carolinas and southern Appalachians today, allowing a weak/dry cold front to drift southeast across the District this afternoon and evening. Outside of a few sprinkles across the Northern Mountains later today or early tonight, no measurable rainfall is expected this entire week.

In the wake of the frontal passage, another, larger area of high pressure will build Southeast across the Upper Great Lakes and extend our lengthy string of rainfree conditions through part or all of this upcoming weekend.

Locally dense large stream/river valley fog will occur across central PA and the Susq valley early today, while light wind and/or some mid and high clouds has limited much in the way of fog development (so far) across the Northern Mtns and Laurel Highlands where temp/dewpt spreads are between 1-6 deg F. Will keep the mention of patchy fog for areas outside of the Susq Mainstem and its West Branch Valley.

Moderate variations will occur in daily and nocturnal temperatures as at least one weak, dry cold fronts moves SE across the Commonwealth during the upcoming 5-6 days. Wind direction/speed and cloud cover will also show some minor day- day variations.

Aviation

Clear skies dominate PA today after this morning's fog. A weaker inversion over the western terminals may allow for a few gusts of wind around 15kts or so at BFD and JST. Aside from that, generally calm conditions for the rest of the day.

A cold front will pass through PA tonight where winds will take on a more northerly tilt behind it into tomorrow. Some lower clouds trail behind this front, however with the lack of moisture to work with, widespread restrictions don't look likely. The main areas to watch for MVFR restrictions at this time are the western terminals BFD, JST, and AOO where latest guidance has the highest probabilities for sub 2kft ceilings. This chance is around 80% according to HREF guidance at BFD where confidence is highest, so introduced a few hours of overnight MVFR there.

Outlook...

Tue...MVFR cigs possible in the north and west early, trending VFR.

Wed-Thu...VFR likely.

Fri...MVFR cigs possible mainly in the north and west due to a cold front.

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. How to use Weather