Forecaster's
Discussion:

County-by-County
Forecast:

Daily Co-operative Station
Observation Summary:

Public Information
Statement:

All NWS State College Text Statements/Forecasts:

OR -- CLICK ON THE IMAGE BELOW TO USE THE NWS MOBILE WEB APP

Latest PA Weather Summary:

436
AWUS81 KCTP 242027
RWSCTP
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-
049>053-056>059-063>066-251030-

Regional Weather Summary
National Weather Service State College PA
427 PM EDT Wed Sep 24 2025

Showers will become more numerous overnight into Thursday, as
warm front lifts north of the Keystone tonight, followed by
a weak cold front later on Thursday. Some thunderstorms will
be possible as well, mainly across the east on Thursday. Some
storms could contain gusty winds and heavy rain, mainly across the
east.

Lows tonight will be in the 60s. Highs on Thursday will be in the
70s. Lows Thursday night will range from the 50s across the
northwest, to the mid 60s across the southeast.

As the cold front will stall just to the south of Pennsylvania
this weekend, there will still be a chance of a shower from
time to time during the period Friday into Sunday. Temperatures
will continue to average above normal, as September comes to an
end.

$$

Martin

Latest Forecaster's Discussion:

722
FXUS61 KCTP 242328
AFDCTP

Area Forecast Discussion
National Weather Service State College PA
728 PM EDT Wed Sep 24 2025

.SYNOPSIS...
* Muggy with periods of much needed rain through Thursday
* Drying out and not as humid on Friday
* Above average temperatures forecast through the end of
September; however rainfall potential remains low/uncertain

&&

.NEAR TERM /THROUGH THURSDAY/...
Another mostly cloudy and muggy period with rain showers
expected to expand from SW to NE across CPA into tonight. The
clouds have kept instability and rain rates in-check so far, but
can`t rule out a couple of heavy downpours this evening or
overnight as above normal PWs creep higher in response to an
increasing SSWly LLJ. Very warm and humid conditions for late
September with low temps +15-20 degrees above climo in the
60-70F range.

&&

.SHORT TERM /THURSDAY NIGHT THROUGH FRIDAY NIGHT/...
A broad upper low over the OH Valley will gradually devolve into a
positive-tilt trough before moving eastward over the Northeast
Thursday. At the surface, a weak low will traverse the St Lawrence
Valley dragging a cold front the OH Valley and Appalachians.
Expanding shower/thunderstorm activity and extensive low cloud
cover is probable Thursday morning ahead of the cold front.
With widespread clouds, minimal surface heating and poor lapse
rates are expected over much of the warm sector. Still, a very
moist air mass for late Sept. with 60s to 70s F dewpoints
should support some weak buoyancy (MLCAPE generally less than
1000 J/kg). Southwesterly flow aloft will favor slightly
cyclonically curved hodographs with around 30-40 kt of deep-
layer shear. This could support some storm organization ahead of
the front into linear clusters with transient updraft rotation.
Isolated damaging gusts are the most likely threat, though a
brief QLCS tornado is also possible near the effective front
where low level flow is more backed. However, given the limited
buoyancy and marginal storm organization, a broader severe risk
appears unlikely. SPC maintained a MRGL severe tstm risk across
the southeast portion of the area with a 2% tornado prob. Hi
pwats around 2" could also support another round of locally
heavy rain focused over the eastern half of the CWA.

The +tilt northern stream trough tracks across NY state early
Friday with the cold front reaching the coast by 12Z. There may
be a couple of lingering showers with the upper trough passage,
but on balance conditions should dry out through Friday night as
weak area of high pressure migrates eastward from the Great
Lakes. A wind shift to the WNW should advect slightly drier/less
humid air into the area to end the week with more
comfortable/seasonable min temps in the 45-60F range Friday
night.

&&

.LONG TERM /SATURDAY THROUGH WEDNESDAY/...
Model and ensemble data show a highly complex pattern evolving
over the Eastern U.S. this weekend into the final days of
September. A southern stream cut-off low over the central
Appalachians will interact with a pair of tropical systems over
the western Atlantic. While the details remain unclear, there
is general agreement with a plume of deep tropical moisture
being transported northward along the coast into the northern
mid Atlantic region. An easterly component to the low level flow
suggests more clouds and increasing odds for rain particularly
over the southern half of CPA this weekend into early next week.
There are signs of drier weather pattern unfolding by the time
the calendar flips to October.

&&

.AVIATION /00Z THURSDAY THROUGH MONDAY/...
Most of showers will lift northward overnight, with just a few
showers left over. This is based on a weak low tracking northeast
across western NY overnight, with warm front over Lake Erie,
along with the main push of higher dewpoint air lifting
northward across PA from the far south. Had a few small bow
shape showers near the MD border up to a short time ago, given
how high the dewpoints are down there. Anyway, the main thing
overnight will be a wide range of conditions, but the trend will
be for lower conditions late.

Conditions will improve on Thurday, as winds shift more to the
southwest. Went with showers for now, potential for storms, but
a bit too far out to add this detail.

Improving conditions on Friday, as slightly drier air works
into the area.

Outlook...

Fri...Low cigs early trending VFR by Friday afternoon.
Decreasing odds for rain.

Sat-Mon...Low confidence in sub-VFR cigs/rain across the
southern/eastern portions of the airspace. Mainly VFR to the NW.

&&

.CTP WATCHES/WARNINGS/ADVISORIES...
None.

&&

$$

SYNOPSIS...Steinbugl
NEAR TERM...Steinbugl
SHORT TERM...Steinbugl
LONG TERM...Steinbugl
AVIATION...Martin

Latest Public Information Statement:

301
NOUS41 KCTP 081505
PNSCTP
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053-056>059-
063>066-090305-

Public Information Statement
National Weather Service State College PA
1105 AM EDT Mon Sep 8 2025

...LOW TEMPERATURE REPORTS...

Location Temp Time/Date Provider

...Pennsylvania...

...Bedford County...
Claysburg 35 F 0726 AM 09/08 CWOP
Bedford Airport 36 F 0655 AM 09/08 AWOS
Clearville 36 F 0725 AM 09/08 DAVIS
Saxton 37 F 0715 AM 09/08 CWOP

...Blair County...
Altoona-Blair County Airport 35 F 0753 AM 09/08 AWOS
WILLIAMSBURG 36 F 0707 AM 09/08 CWOP
Duncansville 38 F 0655 AM 09/08 DAVIS
Altoona 38 F 0745 AM 09/08 CWOP
4 NNE Williamsburg 38 F 0745 AM 09/08 AWS
Williamsburg 39 F 0645 AM 09/08 HADS
Penn State Altoona 39 F 0712 AM 09/08 MESOWEST
Blair Helibase 39 F 0716 AM 09/08 RAWS
2 NNW Altoona 39 F 0720 AM 09/08 AWS
Altoona 39 F 0800 AM 09/08 CWOP
Hollidaysburg 40 F 0705 AM 09/08 DAVIS
Williamsburg 40 F 0715 AM 09/08 DAVIS
ALTOONA 40 F 0726 AM 09/08 CWOP
1 E Bellwood 40 F 0805 AM 09/08 PADOT

...Cambria County...
MINERAL POINT 35 F 0539 AM 09/08 CWOP
Ebensburg 39 F 0731 AM 09/08 CWOP

...Cameron County...
Doll Hill 38 F 0650 AM 09/08 RAWS
Emporium 39 F 0755 AM 09/08 DAVIS

...Centre County...
South Philipsburg 32 F 0722 AM 09/08 CWOP
PORT MATILDA 32 F 0725 AM 09/08 CWOP
Spring Mills 33 F 0624 AM 09/08 CWOP
Bellefonte 35 F 0630 AM 09/08 CWOP
Rock Springs 35 F 0707 AM 09/08 MESOWEST
Centre Hall 35 F 0725 AM 09/08 DAVIS
Zion 36 F 0638 AM 09/08 CWOP
Pennsylvania Furnace 36 F 0643 AM 09/08 CWOP
2 SW State College 36 F 0645 AM 09/08 CWOP
PSU UPark PEMN 36 F 0652 AM 09/08 MESOWEST
Stormstown 36 F 0700 AM 09/08 CWOP
Snow Shoe 36 F 0710 AM 09/08 PADOT
State College 38 F 0705 AM 09/08 CWOP
State College 38 F 0715 AM 09/08 DAVIS
1 NE Port Matilda 38 F 0725 AM 09/08 PADOT
State College 39 F 0718 AM 09/08 CWOP
Bald Eagle State Park 40 F 0322 AM 09/08 MESOWEST
3 NNW Milesburg 40 F 0640 AM 09/08 PADOT

...Clearfield County...
Clearfield Airport 34 F 0754 AM 09/08 ASOS
2 ENE Clearfield 36 F 0555 AM 09/08 PADOT
Grampian 36 F 0600 AM 09/08 COOP
Dubois 36 F 0645 AM 09/08 CWOP
Psu Dubois 36 F 0722 AM 09/08 MESOWEST
6 NNE Philipsburg 37 F 0650 AM 09/08 PADOT
Clearfield 39 F 0815 AM 09/08 DAVIS
Kennedy Preserve 40 F 0108 AM 09/08 RAWS
1 SSE S.b. Elliot State Park 40 F 0725 AM 09/08 PADOT

...Clinton County...
Carroll 37 F 0725 AM 09/08 PADOT
Lock Haven 40 F 0655 AM 09/08 DAVIS

...Dauphin County...
Halifax 40 F 0725 AM 09/08 CWOP

...Elk County...
Kersey 31 F 0720 AM 09/08 CWOP
Saint Marys 33 F 0645 AM 09/08 CWOP
Ridgway 34 F 0740 AM 09/08 AWS
Ridgway 36 F 0700 AM 09/08 COOP
St Marys 37 F 0715 AM 09/08 AWOS
Saint Marys 39 F 0715 AM 09/08 CWOP

...Franklin County...
Waynesboro 39 F 0630 AM 09/08 CWOP
Willow Hill 39 F 0714 AM 09/08 AWS
Greencastle 39 F 0715 AM 09/08 CWOP
Chambersburg 40 F 0715 AM 09/08 DAVIS

...Fulton County...
Forney Trail 34 F 0649 AM 09/08 RAWS
1 NNW Hancock 40 F 0709 AM 09/08 PADOT

...Huntingdon County...
Petersburg 36 F 0725 AM 09/08 DAVIS
Huntingdon 38 F 0702 AM 09/08 MESOWEST
Mapleton 39 F 0607 AM 09/08 CWOP
Shavers Creek WxSTEM 39 F 0750 AM 09/08 MESOWEST

...Juniata County...
Lemont 38 F 0735 AM 09/08 DAVIS

...Lycoming County...
Jersey Shore 38 F 0700 AM 09/08 CWOP

...McKean County...
Smethport 32 F 0800 AM 09/08 CWOP
Kinzua Bridge State Park 34 F 0652 AM 09/08 MESOWEST
Bradford Airport 34 F 0753 AM 09/08 ASOS
Smethport 34 F 0800 AM 09/08 CWOP
Port Allegany 36 F 0800 AM 09/08 COOP
2 WSW Mount Jewett 38 F 0710 AM 09/08 PADOT
Bradford 5SW 39 F 0800 AM 09/08 COOP

...Mifflin County...
2 SSW Alfarata 39 F 0705 AM 09/08 AWS
Mifflin County Airport-RVL 39 F 0715 AM 09/08 AWOS
Chestnut Springs 40 F 0651 AM 09/08 RAWS
LEWISTOWN 40 F 0656 AM 09/08 CWOP

...Northumberland County...
2.6 N Mount Carmel 40 F 0649 AM 09/08 HADS
Knoebels Grove 40 F 0735 AM 09/08 AWS

...Perry County...
1 SW Loysville 37 F 0637 AM 09/08 AWS
Big Knob 40 F 0708 AM 09/08 RAWS
Elliottsburg 40 F 0715 AM 09/08 DAVIS

...Potter County...
Ulysses 36 F 0725 AM 09/08 DAVIS
3 W Denton Hill State Park 38 F 0305 AM 09/08 PADOT
Cherry Springs State Park 39 F 0632 AM 09/08 MESOWEST

...Schuylkill County...
Valley View 38 F 0657 AM 09/08 CWOP
Nuremberg 38 F 0715 AM 09/08 DAVIS
Frackville 40 F 0648 AM 09/08 CWOP
POTTSVILLE 40 F 0700 AM 09/08 CWOP

...Snyder County...
Selinsgrove 40 F 0753 AM 09/08 ASOS

...Somerset County...
CENTRAL CITY 32 F 0730 AM 09/08 CWOP
ROCKWOOD 33 F 0703 AM 09/08 CWOP
HOLLSOPPLE 35 F 0234 AM 09/08 CWOP
Ogletown 35 F 0725 AM 09/08 PADOT
Somerset Airport 36 F 0650 AM 09/08 AWOS
SOMERSET 36 F 0724 AM 09/08 CWOP
Somerset 36 F 0735 AM 09/08 CWOP
2 NNE Garrett 37 F 0705 AM 09/08 PADOT
Meyersdale 37 F 0750 AM 09/08 PADOT
HOLLSOPLE 38 F 0305 AM 09/08 CWOP
Jerome 38 F 0635 AM 09/08 DAVIS
Addison Township 38 F 0722 AM 09/08 MESOWEST
2 NW Indian Lake 39 F 0705 AM 09/08 AWS
Flight 93 Memorial Site 40 F 0512 AM 09/08 MESOWEST
Somerset 40 F 0800 AM 09/08 COOP

...Sullivan County...
LOPEZ 32 F 0710 AM 09/08 CWOP
3 NE Laporte 36 F 0740 AM 09/08 PADOT
DUSHORE 38 F 0643 AM 09/08 CWOP
Dushore 38 F 0643 AM 09/08 CWOP
Hillsgrove 38 F 0645 AM 09/08 DAVIS
3.4 E Muncy Valley 40 F 0730 AM 09/08 HADS

...Tioga County...
Wellsboro 35 F 0735 AM 09/08 CWOP
Old Mountain 36 F 0616 AM 09/08 RAWS
Tioga 2 36 F 0712 AM 09/08 MESOWEST
Westfield 38 F 0645 AM 09/08 CWOP
1.3 NE Leonard Harrison SP 38 F 0700 AM 09/08 COOP
Wellsboro 38 F 0730 AM 09/08 CWOP
Tioga 39 F 0422 AM 09/08 MESOWEST
0.8 W Tioga 40 F 0800 AM 09/08 HADS

...Union County...
LEWISBURG 39 F 0702 AM 09/08 CWOP
Lewisburg 40 F 0715 AM 09/08 DAVIS

...Warren County...
Grand Valley 35 F 0530 AM 09/08 CWOP
Kinzua 38 F 0622 AM 09/08 RAWS
Warren 39 F 0642 AM 09/08 MESOWEST
Tidioute 40 F 0140 AM 09/08 AWS
&&

Observations are collected from a variety of sources with varying
equipment and exposures. We thank all volunteer weather observers
for their dedication. Not all data listed are considered official.

$$