NOTE: In general, these records represent official observations only, which generally started in 1888, but include a few stations from earlier years. Before the Civil War, the popular press repeatedly noted major off-season snowfalls in excess of these posted records and prior to the opening of most official stations. No official records exist for the "year without a summer," 1816, or any of the years in that decade, also exceptionally cold.
* On July 17, 1942, a great flood developed over the Smethport area, resulting in an estimated 34.50" of rain--in just one day, including 30.60" in only six hours, setting a world record. The official observing site, Smethport Highway Shed, reported only 13.08" for the entire month, because the flood consumed the guage after 6.68" of rain. The total results from the substitution of the official estimated amount for the amount measured. In July 1947, portions of Erie suffered a twenty-inch one-day deluge, although the reporting site received substantially less precipitation. The most rainfall officially recorded in July at an official reporting site is 17.89" at Wild Creek Reservoir, Carbon County in 1945--also during that same decade.

January	Record	Date	Location	County
Maximum Temperature	85 °F	January 22, 1906	Freeport	Armstrong
Minimum Temperature	-42 °F	January 5, 1904	Smethport	McKean
Maximum Precipitation	12.81"	1996	Laporte	Sullivan
Minimum Precipitation	0.06"	1981	Everett	Bedford
Maximum Snowfall	84.4"	1978	Ebensburg Sewage Plant	Cambria
February	Record	Date	Location	County
Maximum Temperature	84 °F	1878-1887	State College	Centre
Maximum Temperature	83 °F	February 11, 1932	Hyndman	Bedford
Minimum Temperature	-39 °F	February 11, 1899	Lawrenceville	Tioga
Maximum Precipitation	11.60"	1981	Tioga Hammond Dam	Tioga
Minimum Precipitation	trace	1968	Huntingdon	Huntingdon
Minimum Precipitation	trace	1968	Hyndman	Bedford
Maximum Snowfall	71.0"	1972	Ebensburg Sewage Plant	Cambria
March	Record	Date	Location	County
Maximum Temperature	92 °F	March 24, 1907	Everett	Bedford
Minimum Temperature	-31 °F	March 18, 1916	West Bingham	Potter
Maximum Precipitation	11.60"	1936	Galeton	Potter
Minimum Precipitation	0.00	1910	Skidmore (New Castle)	Lawrence
Maximum Snowfall	81.1"	1999	Mount Davis	Somerset
April	Record	Date	Location	County
Maximum Temperature	98 °F	April 25, 1915	Bloserville	Cumberland
		April 26, 1915	Punxsutawney	Jefferson
		April 19, 1976	Norristown	Montgomery
		April 23, 1976	Port Clinton	Schuylkill
Minimum Temperature	-5 °F	April 1, 1923	Brookville	Jefferson
			Corry	Erie
			Saegertown	Crawford
Maximum Precipitation	14.92"	1874	Ephrata	Lancaster
Minimum Precipitation	0.19"	1950	Austinburg 2 W	Tioga
Maximum Snowfall	38.5"	1928	Somerset Main Street	Somerset
May	Record	Date	Location	County
Maximum Temperature	102 °F	1895	Lock Haven	Clinton
Maximum Temperature	102 °F	May 27, 1941	Marcus Hook	Delaware
Minimum Temperature	10 °F	May 10, 1966	Clermont 4 NW	McKean
Maximum Precipitation	15.02"	1894	Quakertown	Bucks
Minimum Precipitation	0.06"	1964	Bethlehem	Northampton
Maximum Snowfall	8.5"	1989	Bradford FAA Airport	McKean
June	Record	Date	Location	County
Maximum Temperature	107 °F	June 8, 1933	Sharon	Mercer
Minimum Temperature	20 °F	June 10, 1913	Somerset	Somerset
Maximum Precipitation	20.45"	1972	York 3 SSW Pump Station	York
Minimum Precipitation	0.02"	1966	Gettysburg	Adams
Maximum Snowfall	trace	1902	State College	Centre
		1907	Cassandra	Cambria
			Hanover	York
			Wilkes-Barre	Luzerne
		1918	Mount Pocono	Monroe
		1945	Coudersport	Potter
			Eagles Mere	Sullivan
			Gouldsboro	Wayne
			Hollisterville	Wayne
			Scranton	Lackawanna
		1950	Columbia	Lancaster
			Hanover	York
			Corry	Erie
			Greenville	Mercer
			Titusville 2 S	Crawford
July	Record	Date	Location	County
Maximum Temperature	111 °F	July 9, 1936	Phoenixville	Chester
Maximum Temperature	111 °F	July 10, 1936	Phoenixville	Chester
Minimum Temperature	28 °F	July 9, 1963	Clermont	McKean
Maximum Precipitation	40.90"	1942*	Smethport	McKean
Minimum Precipitation	trace	1955	Middletown Olmstead Field	Dauphin
Minimum Precipitation	trace	1955	Myerstown	Lebanon
Maximum Snowfall	0.0"
August	Record	Date	Location	County
Maximum Temperature	108 °F	August 6, 1918	Claysville	Washington
Maximum Temperature	108 °F	August 4, 1930	Carlisle	Cumberland
Minimum Temperature	23 °F	August 29, 1982	Clermont 4 NW	McKean
Maximum Precipitation	23.66"	1955	Mount Pocono	Monroe
Minimum Precipitation	0.01"	1995	Strausstown	Berks
Maximum Snowfall	0.0"
September	Record	Date	Location	County
Maximum Temperature	106 °F	September 3, 1953	Stroudsburg	Monroe
Minimum Temperature	17 °F	September 28, 1947	Hawley 1 S Wallenpaupack Dam	Wayne
Maximum Precipitation	16.13"	1999	Marcus Hook	Delaware
Minimum Precipitation	0.00"	1917	Honesdale	Wayne
Minimum Precipitation	0.00"	1985	Loyalhanna Lake	Indiana
Maximum Snowfall	1.0"	1993	Strongstown	Indiana
October	Record	Date	Location	County
Maximum Temperature	100 °F	October 5, 1941	Phoenixville	Chester
Minimum Temperature	7 °F	October 21, 1952	Coudersport	Potter
Maximum Precipitation	16.37"	2005	Matamoras	Pike
Minimum Precipitation	0.00"	1892	McConnellsburg	Fulton
		1924	Bethlehem	Northampton
			Centre Hall	Centre
			Hamburg	Berks
			Montrose	Susquehanna
			Renovo	Clinton
			Unity Reservoir	Westmoreland
		1963	Beavertown	Snyder
			Berne	Berks
			Breezewood	Bedford
			Chadds Ford	Delaware
			Huntingdon	Huntingdon
			Lebanon 4 WNW	Lebanon
			Virginville	Berks
Maximum Snowfall	19.0"	1962	Corry	Erie
November	Record	Date	Location	County
Maximum Temperature	88 °F	November 3, 1961	Claysville 3 W	Washington
Minimum Temperature	-15 °F	November 29, 1930	Somerset	Somerset
Maximum Precipitation	13.93"	1985	Chalk Hill 2 ENE	Fayette
Minimum Precipitation	0.12"	1917	Centre Hall	Centre
Maximum Snowfall	60.5"	1933	Corry	Erie
December	Record	Date	Location	County
Maximum Temperature	82 °F	December 4, 1982	Washington 3N	Washington
Minimum Temperature	-29 °F	December 25, 1980	Clermont 4 NW	McKean
Maximum Precipitation	13.39"	1996	Joliett	Schuylkill
Minimum Precipitation	0.05"	1877	Carlisle	Cumberland
Maximum Snowfall	96.0"	1890	Blue Knob	Blair