Storm Station
Collegeville, Pennsylvania
59° 63°/58°
Light rain· Feels like 59°·Gentle breeze 11 mph NNW
Rain showers. Mostly cloudy, with a low around 57. Northwest wind around 15 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
0UV Low
30Air quality
88%Humidity
100%Cloud
Now
3:15 AM
59feels59
48%
now, rain light
Today
Sep 27
6358
94%
20mph
rain
Mon
Sep 28
6257
56%
rain heavy
Tue
Sep 29
7356
overcast
Wed
Sep 30
7757
overcast
Thu
Oct 1
8160
overcast
Fri
Oct 2
7860
12%
overcast
Sat
Oct 3
6248
12%
overcast
59°
63°58°
62°57°
73°56°
77°57°
81°60°
78°60°
62°48°

As of 3:15 AM in Collegeville, Pennsylvania.

What is measuring near here

The 6 instruments nearest Collegeville, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.8 miles away.

measured now4 instruments

Perkiomen Creek AT GraterfordGRAP1

At a river or reservoir gauge/3.2 mi away/161 ft/12 ft below here

temp, wind, gust, humidity, pressure

Rank266of 543

Pottstown Limerick AirportPTW

At an airfield/6.2 mi away/308 ft/135 ft above here

temp, wind, gust, visibility, precip, pressure

Rank37of 543

Avondale 2 N03761

At a climate reference station/28.8 mi away/400 ft/227 ft above here

temp, humidity, wind, solar, precip

Rank-

measured daily2 instruments

Collegeville 0.8 NNEPA-MT-91

In a volunteer observer's own ground/0.8 mi away/156 ft/17 ft below here

precip, snowfall, snow depth

Rank-

PhoenixvillePHXP1

At a cooperative observer's station/5.4 mi away/154 ft/19 ft below here

snowfall, snow depth, precip, high, low

Rank-

Station report

The weather at Pottstown Limerick Airport, drawn

The nearest airport reporting now, 6.2 mi from Collegeville. From its report of Sep 27, 2026, 2:54 AM local time: 3 of its 6 sheets.

The sky

Overcast at 4,000 ft; the ceiling is 4,000 ft; visibility 10 mi or more.

Section of the sky over Pottstown Limerick Airport, height above the station to scale: overcast cloud with its base at 4,000 feet, the ceiling at 4,000 feet, and visibility of 10 mi or more.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PTWFIG. A THE SKY OVER POTTSTOWN LIMERICK AIRPORTSECTION, HEIGHT ABOVE THE STATION TO SCALE, EACH LAYER AT THE HEIGHT OF ITS BASE AS REPORTED; COVER IN EIGHTHS OF THE SKY; TOPS NOT MEASUREDFT ABOVE THE STATION01,0002,0003,0004,0005,0006,000ETAGESLOWTHE STATIONTHE CEILOMETER READS TO 12,000 FT, ABOVE THIS SHEETOVC 4,000 FTOVERCAST, 8 EIGHTHS OF THE SKYCEILING 4,000 FTVISIBILITY, MILES: 10 MI OR MORE0510TITLEPottstown Limerick Airport, the skySTATION REPORT · ASOS PTWTYPESECTIONSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 1 of 6DATE2026-09-27IDSR-PTW-1DRAWN AS linework on paperSOURCES FB-SKY-001, FB-SKY-017, FB-SKY-016, FB-SKY-018

The air

58.0 F with a dew point of 54.0 F, 87 per cent relative humidity. Air lifted from the station would cool to its dew point, where cloud forms, about 900 ft up; the lowest cloud reported is at 4,000 ft.

Chart of the air at Pottstown Limerick Airport: temperature 58.0 degrees Fahrenheit and dew point 54.0, 87 per cent relative humidity; air lifted from the station cools along the dry rate and meets its dew point about 900 feet above the station, against the lowest cloud reported at 4,000 feet; height to scale.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PTWFIG. B THE AIR AT POTTSTOWN LIMERICK AIRPORTTHE REPORTED TEMPERATURE AND DEW POINT, AND AIR LIFTED FROM THE STATION WITHOUT MIXING UNTIL IT SATURATES; HEIGHT ABOVE THE STATION TO SCALEFT ABOVE THE STATION01,0002,0003,0004,0005,00040 F50 F60 F70 FSATURATES 900 FT ABOVE THE STATION, AT 53.0 FLOWEST CLOUD REPORTED, OVC 4,000 FTTEMPERATURE 58.0 FDEW POINT 54.0 FSPREAD 4.0 FRELATIVE HUMIDITY 87 PER CENTTHE AIR COOLS ABOUT 5.4 F EACH 1,000 FT IT RISES, AND ITS DEW POINT ABOUT 1 FSOLID: THE LIFTED AIR'S TEMPERATURE; DASHED: ITS DEW POINTTITLEPottstown Limerick Airport, the airSTATION REPORT · ASOS PTWTYPECHARTSCALEHEIGHT TO SCALEREVAS REPORTED SHEET 2 of 6DATE2026-09-27IDSR-PTW-2DRAWN AS linework on paperSOURCES FB-WAT-020, FB-WAT-002, FB-ENG-011, FB-ENG-005

The wind

From the north northwest (340 degrees) at 10 mph: force 3, a gentle breeze on the Beaufort scale. The strongest gust today was 18 mph.

Plan of the wind at Pottstown Limerick Airport, north up: blowing from 340 degrees, the north northwest, at 10 miles an hour; beside it the Beaufort scale from calm to hurricane force, force 3, gentle breeze, marked.1122334455667788AABBCCDDEE© 2026 STORM STATION 247THE FIELD BOOKSTATION REPORT PTWFIG. C THE WIND AT POTTSTOWN LIMERICK AIRPORTPLAN, NORTH UP: THE WIND AS REPORTED, AND WHERE IT SITS ON THE BEAUFORT SCALENESWTHE STATIONFROM 340°BEAUFORT FORCELEAST WIND, MPH0CALM01LIGHT AIR12LIGHT BREEZE43GENTLE BREEZE8NOW, 10 MPH4MODERATE BREEZE135FRESH BREEZE196STRONG BREEZE257NEAR GALE328GALE399STRONG GALE4710STORM5511VIOLENT STORM6412HURRICANE FORCE73TITLEPottstown Limerick Airport, the windSTATION REPORT · ASOS PTWTYPEPLAN north upSCALENOT TO SCALEREVAS REPORTED SHEET 3 of 6DATE2026-09-27IDSR-PTW-3DRAWN AS linework on paperSOURCES FB-EVT-150, FB-ENG-008, FB-INS-002

The full report of Pottstown Limerick Airport, in 6 sheets, each beside the Field Book plates that explain it

-in

Snow on the ground

Elsewhere in Pennsylvania

24 places, each with its own forecast and its own instruments.

Near Collegeville

The nearest places, each with its own forecast and the instruments nearest it.