Montoursville, PA Weather

Lycoming County12:51 AM EDT41.25°N, 76.92°WElevation 538 ft

Current conditions

Clear
37°
Clear
Feels like 35°
High 70°·Low 36° tonight
WindW 3 mph
Humidity93%
Dew point36°
Pressure30.42 inHg
Visibility10 mi
Cloud cover18%
UV index0 Low
Sunrise7:32 AM
Sunset6:12 PM

Observed at Williamsport - Lycoming County Airport · 46 min ago

Forecast

10-day

  • Tonight

    Areas of fog after 3am. Mostly clear, with a low around 36. Wind around 0 mph.

  • Monday

    Areas of fog before 10am. Mostly sunny, with a high near 70. West wind 0 to 5 mph.

  • Monday Night

    Partly cloudy, with a low around 42. Northwest wind around 3 mph.

National Weather Service forecast updated 4 hrs ago.

Hourly

Hourly forecast
  1. Now Mostly Clear 42°
  2. 1 AM Mostly Clear 41°
  3. 2 AM Partly Cloudy 40°
  4. 3 AM Patchy Fog 39°
  5. 4 AM Patchy Fog 38°
  6. 5 AM Areas Of Fog 37°
  7. 6 AM Areas Of Fog 37°
  8. 7 AM Areas Of Fog 37°
  9. 8 AM Areas Of Fog 37°
  10. 9 AM Areas Of Fog 40°
  11. 10 AM Mostly Sunny 46°
  12. 11 AM Mostly Sunny 53°
  13. 12 PM Sunny 58°
  14. 1 PM Sunny 64°
  15. 2 PM Sunny 68°
  16. 3 PM Sunny 68°
  17. 4 PM Sunny 70°
  18. 5 PM Sunny 68°
  19. 6 PM Mostly Clear 65°
  20. 7 PM Mostly Clear 62°
  21. 8 PM Mostly Clear 57°
  22. 9 PM Partly Cloudy 55°
  23. 10 PM Partly Cloudy 54°
  24. 11 PM Partly Cloudy 52°

10-day forecast

Details
  1. TonightOct 25 Mostly Clear then Areas Of Fog Mostly Clear then Areas Of Fog36°
  2. TodayOct 26 Areas Of Fog then Mostly Sunny Areas Of Fog then Mostly Sunny42°70°
  3. TueOct 27 Sunny Sunny37°62°
  4. WedOct 28 Partly Sunny Partly Sunny43°62°
  5. ThuOct 29 Mostly Sunny Mostly Sunny47°70°
  6. FriOct 30 Mostly Sunny Mostly Sunny47°73°
  7. SatOct 31 Partly Sunny Partly Sunny51°69°
  8. SunNov 1 Mostly Cloudy then Chance Rain Showers Mostly Cloudy then Chance Rain Showers40%67°
  9. MonNov 2 Cloudy Cloudy50°68°
  10. TueNov 3 Rain Rain0.31 in50°61°

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

Radar

Full map
Open the National Weather Service radar (the map here needs JavaScript).

Weather news in Pennsylvania

More weather news

Air quality

41
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 · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:32 AM
Sunset 6:12 PM
Daylight 10 h 39 min (−2 min 33 s tomorrow)
Full Moon · 100% lit
Moonrise 6:02 PM Moonset 8:07 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low59° / 39°
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 6 hrs ago

What Has Changed

* No significant changes

Key Messages

1) Rain-free conditions will persist through the end of October

Discussion

KEY MESSAGE 1: Rain-free conditions will persist through the end of October

A large area of high pressure will remain in place over the Northeast U.S. and Central Appalachians. Expect mainly clear skies and rain-free conditions right through the upcoming week.

Fog is a tough call for tonight. HREF and REFS probabilities are highest around LNS and over the NW mtns. However, clouds moving in from the NW could keep the NW from getting too foggy. The best bets are the same places as have been the last few nights (W Br Susq and Susq above Harrisburg, and Lake Raystown). Have mentioned patchy fog in many places due to the uncertainty, but kept dense fog mention to IPT/LNS.

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

The first of the aforementioned dry cold fronts will slip SE across the CWA Monday night into early Tuesday, but with only limited moisture to work with, just some periods of BKN, shallow strato cu and cirrus will occur with no rainfall expected beyond a few sprinkles over the Northern Mtns Monday night. Have kept the PoPs below mentionable for now on Mon night. This front seems like it may slide in before it makes low clouds in the nrn tier.

After a brief shot of seasonably cool air Tuesday and Wed (directed mainly at the NE half of the state), a late week/Saturday rebound in temps (to well above normal values in the low-mid 60s across the Mtns and upper 60s to mid 70s in the Central and Southern Valleys) will follow. A second, weak frontal boundary could brush by across the Northern tier counties Friday afternoon and night. New Day8 is wet (40-60 PoPs) as the pattern shifts to a more-zonal flow for the east. GFS is still dry, though. Models/members are not in as good of agreement from then onward.

Aviation

Bright moonlight skies and light winds will prevail overnight, as high pressure remains over the area. A few high clouds, mainly at BFD.

As was the case last night, a very strong inversion could result in some fog and lower clouds late, even with the very dry air. Overall I did not change much from the 18Z TAF package for overnight.

More detail below.

The greatest chances for fog and lower CIGS are at IPT, MDT, and LNS, given weaker flow down there, closer to the high center.

Outlook...

Mon-Fri...VFR prevailing conditions.

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