Annual Pennsylvania rainfall

Driest location ranked by lowest annual average precipitation: Wellsboro,  northern Pennsylvania,33.18"

Wettest location ranked by highest annual average precipitation: Chalk Hill, southwestern Pennsylvania, 54.04"

Snowiest location ranked by highest annual average snowfall: Corry, northwestern Pennsylvania, 121.6"

State precipitation record for 24 hours - Smethport, northern Pennsylvania, 7/17/1942, 34.50"

State precipitation record for 1 year - Mount Pocono, eastern Pennsylvania, 1952, 81.64"

State snowfall record for 24 hours - Seven Springs, southwestern Pennsylvania, 3/13-14/1993, 40.0"

State snow record for 1 season - Blue Knob, south-central Pennsylvania, 1890-1891, 225.0"

On July 17, 1942 Smethport, Pennsylvania received 34.50 inches of rain in 24 hours, the 5th highest 
24-hour total in U.S. history

On July 24, 1947, the most powerful lightning strike ever recorded in the United States struck the 
Cathedral of Learning of the University of Pittsburgh. The bolt discharged approximately 345,000 amps. This was enough 
electricity to briefly light 600,000 60W light bulbs.

Precipitation data for other U.S. states
Data source: National Data Climatic Center

City	Avg Annual Precip	Avg Snow Annual	Avg # days of Precip	Avg # thunderstorm days	Avg # hail days
Allentown	45.17	32.9	125	31	1
Erie	42.77	90.4	165	35	1
Harrisburg	41.45	34.3	125	31	1
Philadelphia	42.05	21.1	117	27	1
Pittsburgh	37.85	43.5	153	35	1
Avoca	37.56	48.7	140	29	1
Williamsport	41.59	41.7	141	34	1
State Average - 43.02", 21st wettest in the U.S.