Winter Weather in Pennsylvania
Every winter weather event the National Weather Service has filed in Pennsylvania, year by year, with the most significant episodes. Snow, sleet or freezing rain below warning levels that still caused disruption, damage or casualties.
The most significant on the map
The most significant winter weather episodes in Pennsylvania.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The record
- Events
- 3,470
- Deaths
- 56
- Injuries
- 671
- Damage
- $2.6 million
Every year
The most significant
Ranked by deaths, injuries, damage and size together.
- Winter Storm and Heavy Snow in Pennsylvania, October 29, 2011An unprecedented winter storm for late October not only dropped heavy snow across most of Eastern Pennsylvania, but caused widespread power outages and road closures as many deciduous trees still had foliage.
- Winter Weather in Pennsylvania, January 18, 2015Freezing rain at the onset of a protracted precipitation event resulted in hundreds of accidents, two that had fatalities, across Eastern Pennsylvania during the morning into the early afternoon of the 18th. There were also numerous pedestrian slip and fall accidents.
- Winter Weather in Pennsylvania, January 6, 2004An arctic cold front crossed central Pennsylvania during the mid morning hours of Tuesday, January 6th, accompanied by a narrow band of intense snow squalls. These squalls caused the visibility to drop to near zero, and caused roadways to quickly become snow covered and icy.
- Winter Weather in Pennsylvania, March 28, 2022Snow squalls developed during the day on March 28, 2022 as unseasonably cold air aloft moved over central Pennsylvania. Surface temperatures were anomalously cold as well, with many locations across central Pennsylvania experiencing record cold high temperatures.
- Winter Weather in Pennsylvania, February 13 to 14, 2016A snow squall combined with blowing snow produced sudden whiteout conditions along Interstate 78 in Lebanon County on Saturday morning, February 13, 2016.
- Winter Storm and Heavy Rain in Pennsylvania, January 13 to 15, 1999A very protracted winter storm affected Eastern Pennsylvania from the 13th through the 15th. A combination of snow, sleet and heavy freezing rain fell across the region. Some heavy rain even fell across Delaware and Philadelphia Counties.
- Winter Weather in Pennsylvania, February 25, 2012A strengthening low pressure system crossed the upper Ohio Valley and Great Lakes on the 24th. Strong cold air advection and a tightening pressure gradient brought strong winds and snow showers and squalls to much of northwestern Pennsylvania and eastern Ohio.
- Winter Weather in Pennsylvania, December 26, 2013An upper air disturbance caused a burst of heavy snow to fall across Berks County and the western Philadelphia suburbs during the morning of the 26th.
- Winter Weather in Pennsylvania, February 10, 2008An intense snow squall with 50 mph wind gusts moved east across Northeast Pennsylvania during the afternoon. The snow quickly caused roads to become slick and dramatically reduced visibilities.
- Winter Weather in Pennsylvania, December 23 to 24, 2008A wintry mix of sleet and freezing rain fell from the late evening of the 23rd into the morning on the 24th across eastern Pennsylvania. The resulting glaze on untreated roadways led to numerous accidents.
- Lake-Effect Snow and Winter Weather in Pennsylvania, January 7, 2015Northwest flow and a crossing upper trough helped to produce lake effect snow bands downwind of Lake Erie during the day on the 7th. Near white-out conditions were encountered in snow squalls which caused a 17-car pileup on Interstate 80 in Clarion County.
- Winter Weather in Pennsylvania, November 15, 2022A weak area of low pressure pushed up the Ohio Valley during the afternoon and evening of November 15, 2022. This system pushed wet snow into central Pennsylvania, with light rain in the Lower Susquehanna Valley.
- Winter Weather in Pennsylvania, January 21, 2012A low pressure system that just grazed extreme southeast New Jersey during the morning of the 21st brought snow to Berks County, the Lehigh Valley and the Poconos and a wintry mix of snow, sleet and freezing rain to southeastern Pennsylvania.
- Winter Weather in Pennsylvania, January 13 to 16, 1998A combination of occasional rain, freezing rain, sleet and snow, particularly on Tuesday the 13th, caused icy roads, bridges, sidewalks and other exposed surfaces. Schools were closed and hospitals treated numerous ice related injuries (mostly from slips and falls).
- Winter Weather in Pennsylvania, February 14, 2025A low-level jet entrance region across western Pennsylvania, with moist westerly flow along the Alleghenies providing sufficient lift, allowed for snow showers to occur across northern and western portions of Pennsylvania during the early morning hours of February 14, 2025.
- Winter Weather in Pennsylvania, December 13, 2009As warm air headed north ahead of low pressure moving into the Ohio Valley freezing rain quickly developed across much of eastern Ohio, western Pennsylvania, northern West Virginia, and Garrett county Maryland.
- Winter Weather in Pennsylvania, January 28, 2013A wintry mix of precipitation affected the Poconos throughout the day on the 28th and the rest of Eastern Pennsylvania into the early afternoon of the 28th.
- Winter Storm and Winter Weather in Pennsylvania, February 11 to 12, 2006A major winter storm affected the northeastern United States, including the northern mid Atlantic region, during Saturday February 11th and Sunday February 12th.
- Heavy Snow and Winter Weather in Pennsylvania, December 19 to 20, 2009A major winter storm affected central and southeast Pennsylvania on the 19th and 20th. A lighter accumulating snow affected the Poconos.
- Winter Weather in Pennsylvania, November 22, 2014Light freezing rain and road icing resulted in very hazardous travel across the Central Mountains during the afternoon and evening. The quick glaze of ice on roads caused several vehicle accidents and closed multiple roads.
- Winter Storm and Winter Weather in Pennsylvania, February 22 to 24, 2010A protracted winter storm dropped a wintry mix of snow. sleet and freezing rain from the Lehigh Valley into the Poconos and affected Monroe County the most. The wintry conditions led to numerous accidents including a fatal one in Carbon County.
- Winter Weather in Pennsylvania, January 9, 2013An unusual freezing rain event occurred across portions of Allegheny, Butler, Beaver, and Armstrong counties on the morning of January 9th. Temperatures early morning on the 9th were in the teens, then warmed rapidly ahead of an approaching cold front into the mid and upper 30s.
- Winter Weather in Pennsylvania, February 26, 2009A mixture of light freezing rain and sleet fell across parts of Berks County, the Lehigh Valley and Poconos during the morning of the 26th. Precipitation started around 7 a.m. EST and temperatures rose above freezing after 9 a.m. EST.
- Winter Storm and High Wind in Pennsylvania, March 2, 2018A cold front stalled across the region on March 1st. Meanwhile, a wave of low pressure developed along this front in the Ohio Valley and move eastward, explosively deepening just southeast of Long Island on March 2nd.
- Winter Weather in Pennsylvania, December 10, 2016Lake effect moisture delivered into the region in northwest flow was enhanced by the high terrain leading to some snow squalls. These snow squalls only resulted in small accumulations under an inch in very localized areas of Carbon, Monroe and Montgomery counties.
More
Winter Weather everywhereEvery kind of event in Pennsylvania
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24.