Daylight through the yearLongest day (Jun 21): 15 h 2 min5:32 am – 8:34 pmShortest day (Dec 21): 9 h 19 min7:20 am – 4:39 pm
Sun todaySunrise –Sunset –
ClimateWarmest month July: highs 89°F, lows 67°FColdest month January: highs 42°F, lows 23°F51 in of rain a year, on about 86 dayswettest month August25 in of snow a year, on about 10 days39 days above 90°F, 107 nights below freezing in a typical yearSource: NOAA 1991-2020 Climate Normals, Norristown station
Nearby landmarksSchuylkill River Reservoirreservoir · under a mileBarbadoes Islandisland · 1.0 miMermaid Lakelake · 3.1 miReformed Episcopal Seminarycollege · 4.2 miMount Joypeak · 6.3 miSherry Lakelake · 3.6 miSource: USGS Geographic Names Information System
Parks and public landsElmwood Parkpark · under a mile · 74 acresBartash Parkpark · under a mileEvansburg State Parkstate park · 4.8 mi · 3,240 acresFort Washington State Parkstate park · 5.5 mi · 474 acresValley Forge National Historical Parkhistoric site · 4.6 mi · 3,123 acresThe Highlands Mansion and Gardensstate historic site · 5.6 miSource: USGS Protected Areas Database (PAD-US)
Earthquakes8 of magnitude 3 or more within 50 miles since 19702 of magnitude 4+, 0 of magnitude 5+Largest: magnitude 4.6 on 16 Jan 199440 mi away, near Sinking Spring, PennsylvaniaMost recent: magnitude 3.1 on 26 Aug 200336 mi awaySource: USGS Earthquake Catalog
Natural hazardsOverall risk Relatively HighMontgomery County, PA, compared with all US countiesHigher-risk hazardsWinter weather Very HighStrong wind Very HighCold wave Relatively HighHeat wave Relatively HighSource: FEMA National Risk Index (county level)
Air quality73% of days had good air in 2025268 of 365 days measured96 moderate, 1 unhealthy for sensitive groups daysMedian index 41, worst day 133main pollutant: ozoneSource: US EPA Air Quality Index, nearest monitors: Montgomery County, PA, 6 mi away
Elevation153 ft47 m above sea levelSource: USGS 3D Elevation Program
Local servicesHospitalMontgomery County Emergency Service Behavioral Health Hospital1.2 miPost officeNorristown Post Officeunder a mileTown hallNorristown Municipal Buildingunder a milePoliceMontgomery County Sheriff's Officeunder a mileFire stationNorristown Hose Companyunder a mileSource: USGS National Structures Dataset
SchoolsWithin 2 mi14 schools6 elementary, 3 middle, 1 high, 4 otherElementaryGotwals Elementary Schoolunder a mileHighRoosevelt Campus of the Norristown Area High Schoolunder a mileElementaryHancock Elementary Schoolunder a mileCollegeReformed Episcopal Seminary4.2 miSource: USGS National Structures Dataset
Getting aroundAirportPhiladelphia International Airport PHL18 miInterstateI-2761.6 miUS highwayUS 202under a mileAmtrakArdmore, PA ARD8.3 miRailNorristown Elm StreetSoutheastern Pennsylvania Transportation Authority (SEPTA)under a mileCoachKing of Prussia ExpressFullington Trailways3.6 miTransit128 stops within a mileSoutheastern Pennsylvania Transportation Authority (SEPTA)Sources: OurAirports; US Census Bureau TIGER roads; Bureau of Transportation Statistics NTAD
Distances in these cards are measured from the centre of the 19415 ZIP area.
