List of Pennsylvania weather records
Rainfall associated with Hurricane Agnes in 1972
These are the extremes in weather records for Pennsylvania, a U.S. state in the Middle Atlantic region. These extremes are based on records maintained by the National Climatic Data Center (NCDC), a division of the National Oceanographic and Atmospheric Administration.
Temperature
Overall
The state record low is −42 °F (−41 °C), recorded at Smethport on January 5, 1904, while the state record high is 111 °F (44 °C), recorded at Phoenixville on July 9 and 10, 1936.
| Climate data for Pennsylvania (1870s–present) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °F (°C) | 85 (29) |
84 (29) |
92 (33) |
98 (37) |
102 (39) |
107 (42) |
111 (44) |
108 (42) |
106 (41) |
100 (38) |
88 (31) |
82 (28) |
111 (44) |
| Record low °F (°C) | −42 (−41) |
−39 (−39) |
−31 (−35) |
−5 (−21) |
10 (−12) |
20 (−7) |
28 (−2) |
23 (−5) |
17 (−8) |
7 (−14) |
−15 (−26) |
−29 (−34) |
−42 (−41) |
| Source: http://climate.psu.edu/data/state/staterecords.php | |||||||||||||
Precipitation
Rain
| Event[1] | Measurement | Date | Location |
|---|---|---|---|
| Greatest 24-Hour Rainfall | 13.50 inches (343 mm) | June 22, 1972 (during Hurricane Agnes) | York |
Note: While the official measured rainfall record is given above, the NCDC notes that an estimated 34.50 inches (876 mm) of rain fell in 12 hours near Smethport on July 17, 1942. The NCDC says this is "arguably the greatest 24-hour rainfall on record outside of the tropics".[1]
Snow
| Event[1] | Measurement | Date | Location |
|---|---|---|---|
| Greatest 24-hour snowfall | 40.0 inches (102 cm) | March 13–14, 1993 | Seven Springs |
| Greatest snow depth | 60.0 inches (152 cm) | March 22 & 23, 1958 | Goldsboro |
Hurricanes
| Event[2] | Measurement | Date | Location |
|---|---|---|---|
| Wettest Tropical Cyclone | 19.00 inches (483 mm) | Agnes (1972) | Western Schuylkill County |
References
- 1 2 3 "All-Time Climate Extremes for PA". National Climatic Data Center. Retrieved November 11, 2010.
- ↑ David M. Roth (October 15, 2010). "Tropical Cyclone Point Maxima". National Oceanographic and Atmospheric Administration. Retrieved November 11, 2010.
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