These are the extremes in weather

Weather

Weather is the state of the atmosphere, to the degree that it is hot or cold, wet or dry, calm or stormy, clear or cloudy. Most weather phenomena occur in the troposphere, just below the stratosphere. Weather refers, generally, to day-to-day temperature and precipitation activity, whereas climate...

 records for Pennsylvania

Pennsylvania

The Commonwealth of Pennsylvania is a U.S. state that is located in the Northeastern and Mid-Atlantic regions of the United States. The state borders Delaware and Maryland to the south, West Virginia to the southwest, Ohio to the west, New York and Ontario, Canada, to the north, and New Jersey to...

, a U.S. state

U.S. state

A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 in the Middle Atlantic region. These extremes are based on records maintained by the National Climatic Data Center

National Climatic Data Center

The United States National Climatic Data Center in Asheville, North Carolina is the world's largest active archive of weather data. The center became established in late 1951, with the move into the new facility occurring in early 1952....

 (NCDC), a division of the National Oceanographic and Atmospheric Administration.

Overall

Event	Measurement	Date	Location
Highest Temperature Temperature Temperature is a physical property of matter that quantitatively expresses the common notions of hot and cold. Objects of low temperature are cold, while various degrees of higher temperatures are referred to as warm or hot...	111 °F (44 °C)	July 9 and 10, 1936	Harrisburg Phoenixville, Pennsylvania Phoenixville is a borough in Chester County, Pennsylvania, United States, northwest of Philadelphia, at the junction of French Creek with the Schuylkill River. The population is 16,440 as of the 2010 Census.- History :...
Lowest Temperature	-42 °F	January 5, 1904	Smethport Smethport, Pennsylvania Smethport is a borough in McKean County, Pennsylvania, United States. The current mayor is Ross Porter. The population was 1,684 at the 2000 census. It is the county seat of McKean County.-History:The U.S...

Rain

Event	Measurement	Date	Location
Greatest 24-Hour Rainfall	13.5 inches (342.9 mm)	June 22, 1972 (during Hurricane Agnes Hurricane Agnes Hurricane Agnes was the first tropical storm and first hurricane of the 1972 Atlantic hurricane season. A rare June hurricane, it made landfall on the Florida Panhandle before moving northeastward and ravaging the Mid-Atlantic region as a tropical storm... )	York York, Pennsylvania York, known as the White Rose City , is a city located in York County, Pennsylvania, United States which is in the South Central region of the state. The population within the city limits was 43,718 at the 2010 census, which was a 7.0% increase from the 2000 count of 40,862...

Note: While the official measured rainfall record is given above, the NCDC notes that an estimated 34.5 inches (876.3 mm) of rain fell in 12 hours near Smethport

Smethport, Pennsylvania

Smethport is a borough in McKean County, Pennsylvania, United States. The current mayor is Ross Porter. The population was 1,684 at the 2000 census. It is the county seat of McKean County.-History:The U.S...

 on July 17, 1942. The NCDC says this is "arguably the greatest 24-hour rainfall on record outside of the tropics".

Snow

Event	Measurement	Date	Location
Greatest 24-hour snowfall	40 inches (101.6 cm)	March 13-14, 1993	Seven Springs Seven Springs, Pennsylvania Seven Springs is a borough in Somerset and Fayette Counties, Pennsylvania. The Somerset County portion of the borough is part of the Johnstown Metropolitan Statistical Area, while the Fayette County portion is part of the Pittsburgh Metropolitan Statistical Area. The population was 127 at the 2000...
Greatest snow depth	60 inches (152.4 cm)	March 22 & 23, 1958	Gouldsboro Gouldsboro, Pennsylvania Gouldsboro is a small village located in Lehigh Township in Wayne County, Pennsylvania.Parts of Clifton Township, Thornhurst Township, and Covington Township in Lackawanna County, as well as a very small portion of Coolbaugh Township in Monroe County are serviced by the Gouldsboro Post Office, and...

Hurricanes

Event	Measurement	Date	Location
Wettest Tropical Cyclone Tropical cyclone A tropical cyclone is a storm system characterized by a large low-pressure center and numerous thunderstorms that produce strong winds and heavy rain. Tropical cyclones strengthen when water evaporated from the ocean is released as the saturated air rises, resulting in condensation of water vapor...	19 inches (483 mm)	Agnes (1972) Hurricane Agnes Hurricane Agnes was the first tropical storm and first hurricane of the 1972 Atlantic hurricane season. A rare June hurricane, it made landfall on the Florida Panhandle before moving northeastward and ravaging the Mid-Atlantic region as a tropical storm...	Western Schuylkill County Schuylkill County, Pennsylvania -Notable people:*Boxing heavyweight great Muhammad Ali had his training camp in Deer Lake.*Charles Justin Bailey, commanding general of the 81st Division in World War I, was born in Tamaqua on June 21, 1859....