| City | Lat | Long | April Precip. |
| Acmetonia | 40.53 | -79.82 | 3.50 |
| Allentown WSO Airport | 40.65 | -75.43 | 1.61 |
| Altoona | 40.67 | -78.47 | 1.96 |
| Bear Gap Trtmnt. Plant | 40.83 | -76.50 | 2.26 |
| Beaver Falls | 40.77 | -80.32 | 3.24 |
| Beavertown | 40.77 | -77.15 | 2.55 |
| Bechtelsville | 40.42 | -75.62 | 3.19 |
| Beltzville Dam | 40.77 | -75.73 | 1.88 |
| Biglerville E | 39.93 | -77.25 | 2.42 |
| Bloserville | 40.27 | -77.37 | 2.17 |
| Boswell (Jerome) | 40.15 | -79.03 | 2.56 |
| Braddock Lock #2 | 40.40 | -79.87 | 3.77 |
| Bradford 5 SW | 41.90 | -78.72 | 4.07 |
| Bradford Central Fire Stat | 41.95 | -78.65 | 2.18 |
| Buckstown | 40.07 | -78.83 | 3.85 |
| Bucksville | 40.50 | -75.20 | 2.32 |
| Buffalo Mills | 39.95 | -78.65 | 3.73 |
| Butler 2 SW | 40.85 | -79.92 | 4.22 |
| Chalk Hill 2 ENE | 39.85 | -79.58 | 3.74 |
| Chambersburg | 39.93 | -77.63 | 2.24 |
| Charleroi Lock 4 | 40.15 | -79.90 | 3.14 |
| Clarence | 41.05 | -77.93 | 1.62 |
| Clarion 3 SW | 41.20 | -79.43 | 3.59 |
| Clermont 1 NW | 41.73 | -78.53 | 2.98 |
| Coatesville | 39.98 | -75.42 | 2.22 |
| Confluence Dam | 39.80 | -79.37 | 2.70 |
| Connellsville | 40.00 | -79.60 | 3.16 |
| Cooksburg 2 NW | 41.35 | -79.22 | 3.28 |
| Coudersport | 41.85 | -78.05 | 3.13 |
| Covington | 41.73 | -77.12 | 2.63 |
| Cowanesque Dam | 42.00 | -77.15 | 1.83 |
| Danville | 40.95 | -76.62 | 1.88 |
| Dehart Dam | 40.46 | -76.86 | 3.01 |
| Derry | 40.30 | -79.33 | 4.91 |
| Donegal 2 NW | 40.13 | -79.40 | 2.83 |
| Donora 1 SW | 40.17 | -79.87 | 3.68 |
| Dunlo | 40.28 | -78.72 | 4.69 |
| Dysart 2 NW | 40.58 | -78.50 | 2.31 |
| Ebensburg | 40.47 | -78.73 | 4.00 |
| Eisenhower NHS | 39.80 | -77.27 | 1.72 |
| Emporium | 41.50 | -78.23 | 2.06 |
| Emsworth L/D, Ohio River | 40.50 | -80.08 | 5.07 |
| Equinunk | 41.87 | -75.27 | 0.76 |
| Erie WSO Airport | 42.08 | -80.18 | 2.54 |
| Everett | 40.02 | -78.37 | 4.00 |
| Ford City 4S Dam | 40.72 | -79.50 | 2.59 |
| Franklin | 41.38 | -79.82 | 2.51 |
| Galeton | 41.73 | -77.60 | 2.76 |
| Garland | 41.82 | -79.45 | 2.48 |
| Glen Hazel | 41.57 | -78.60 | 2.20 |
| Glen Hope | 40.80 | -78.50 | 2.18 |
| Glenmoore | 40.10 | -75.78 | 2.13 |
| Glenwillard | 40.55 | -80.22 | 4.91 |
| Graterford | 40.23 | -75.43 | 3.40 |
| Grays Landing Lock and Dam | 39.78 | -79.92 | 3.39 |
| Greenlane Reservoir | 40.33 | -75.48 | 2.69 |
| Hamburg | 40.55 | -75.98 | 2.41 |
| Hanover | 39.77 | -77.03 | 2.16 |
| Harrisburg 1 NE | 40.28 | -76.86 | 2.30 |
| Hawley | 41.48 | -75.17 | 1.63 |
| Honeybrook | 40.08 | -75.83 | 2.36 |
| Indiana 3 SE | 40.60 | -79.12 | 4.40 |
| Jamestown 2 NW | 41.50 | -80.47 | 3.49 |
| Kane | 41.68 | -78.80 | 2.73 |
| Kittaning Lock #7 | 40.82 | -79.53 | 3.77 |
| Lancaster | 40.05 | -76.28 | 2.31 |
| Landisville | 40.12 | -76.43 | 2.20 |
| Laporte | 41.42 | -76.50 | 2.10 |
| Laurel Mountain | 40.17 | -79.15 | 5.48 |
| Laurelton Center | 40.90 | -77.22 | 3.42 |
| Lebanon | 40.33 | -76.47 | 2.30 |
| Lehighton | 40.83 | -75.72 | 1.91 |
| Lewis Run | 41.87 | -78.53 | 3.74 |
| Lewisburg Sewer Plant | 40.93 | -76.86 | 2.19 |
| Lewistown | 40.58 | -77.57 | 2.34 |
| Linesville | 41.65 | -80.43 | 2.22 |
| Lock Haven | 41.12 | -77.45 | 2.05 |
| Loyalhanna Creek Lake | 40.45 | -79.48 | 2.10 |
| Mahanoy City | 40.83 | -76.13 | 2.88 |
| Marcus Hook | 39.82 | -75.42 | 1.61 |
| Matamoras | 41.37 | -74.70 | 1.77 |
| McAlvey's Fort | 40.66 | -77.80 | 2.55 |
| McKeesport | 40.33 | -79.87 | 3.71 |
| Mercer | 41.22 | -80.23 | 2.00 |
| Meyersdale | 39.78 | -79.05 | 2.92 |
| Middletown Harrisburg | 40.20 | -76.77 | 2.00 |
| Millheim | 40.88 | -77.48 | 2.87 |
| Montgomery Lock & Dam | 40.65 | -80.38 | 3.67 |
| Montrose | 41.83 | -75.87 | 1.42 |
| Mount Davis | 39.78 | -79.18 | 2.75 |
| Mount Pleasant | 40.20 | -79.48 | 3.54 |
| Murrysville | 40.42 | -79.73 | 3.90 |
| Natrona Lock #4 | 40.62 | -79.72 | 4.05 |
| New Castle | 41.02 | -80.37 | 4.01 |
| New Holland | 40.08 | -76.07 | 2.61 |
| New Park | 39.73 | -76.50 | 2.33 |
| New Stanton 1 SW | 40.20 | -76.63 | 2.94 |
| Octoraro Lake | 39.80 | -76.05 | 1.93 |
| Oswayo | 41.92 | -78.00 | 2.73 |
| Philadelphia Franklin Institute | 39.97 | -75.17 | 1.67 |
| Philadelphia WSCMO | 39.88 | -75.25 | 1.49 |
| Philipsburg | 40.92 | -78.07 | 3.17 |
| Pine Grove State Park | 40.03 | -77.30 | 2.75 |
| Pitts. Carnegie Science Center | 40.45 | -80.02 | 3.14 |
| Pittsburgh WSCOM 2 Airport | 40.50 | -80.22 | 3.75 |
| Pleasant Mount | 41.73 | -75.45 | 1.87 |
| Point Marion Lock and Dam | 39.73 | -79.92 | 3.56 |
| Port Allegany | 41.82 | -78.28 | 3.58 |
| Prince Gallitzin State Park | 40.65 | -78.55 | 2.97 |
| Putneyville 2M SE Dam | 40.93 | -79.28 | 3.51 |
| Raystown Lake | 40.43 | -78.00 | 3.52 |
| Reading | 40.42 | -75.93 | 1.07 |
| Rector 3 SSW | 40.17 | -79.27 | 3.88 |
| Renovo | 41.33 | -77.73 | 1.65 |
| Ridgway | 41.42 | -78.75 | 2.80 |
| Rodale Research Center | 40.55 | -75.72 | 2.53 |
| Rushville | 41.78 | -76.12 | 2.66 |
| Sabinsville | 41.83 | -77.47 | 1.94 |
| Safe Harbor | 39.92 | -76.38 | 1.92 |
| Sagamore | 40.78 | -79.23 | 3.26 |
| Salina 3 W | 40.52 | -79.55 | 3.62 |
| Saxton | 40.20 | -78.25 | 3.26 |
| Schenley | 40.68 | -79.67 | 4.94 |
| Selinsgrove | 40.80 | -76.87 | 2.22 |
| Sellersville | 40.77 | -76.87 | 2.60 |
| Shawnee State Park | 40.03 | -78.63 | 4.54 |
| Shickshinny 3 N | 41.20 | -76.15 | 1.65 |
| Shippensburg | 40.05 | -77.52 | 2.29 |
| Sinnamahoning | 41.32 | -78.10 | 1.31 |
| Slippery Rock 1SSW | 41.05 | -80.07 | 4.81 |
| Somerset | 40.00 | -79.08 | 4.14 |
| South Mountain | 39.85 | -77.50 | 2.57 |
| Southampton | 40.17 | -75.03 | 1.92 |
| Spring Grove | 39.87 | -76.87 | 2.26 |
| Springtown | 40.57 | -75.28 | 2.32 |
| State College | 40.80 | -77.87 | 2.66 |
| Stevenson Dam | 41.40 | -78.02 | 2.40 |
| Strausstown | 40.48 | -76.18 | 2.57 |
| Strongstown | 40.55 | -78.92 | 4.92 |
| Sunbury | 41.00 | -75.18 | 2.32 |
| Susquehanna | 41.95 | -75.60 | 1.04 |
| Tamaqua | 40.78 | -75.98 | 2.18 |
| Tannersville | 41.03 | -75.30 | 1.29 |
| Tioga-Hammond Dam | 41.90 | -77.13 | 2.62 |
| Tionesta 2 SE Lake | 41.48 | -79.43 | 3.54 |
| Towanda | 41.75 | -76.42 | 2.96 |
| Tyrone | 40.67 | -78.23 | 3.09 |
| Union City | 41.57 | -79.82 | 3.05 |
| Uniontown Sewage Plant | 39.92 | -79.72 | 2.56 |
| Vandergrift | 40.58 | -79.52 | 5.27 |
| Warren | 41.85 | -79.15 | 3.31 |
| Washington 3 NE | 40.18 | -80.18 | 3.98 |
| Waynesburg 1 E | 39.90 | -80.17 | 2.92 |
| Wellsboro | 39.90 | -80.17 | 2.44 |
| West Hickory | 41.58 | -79.42 | 2.54 |
| Wilkes-Barre Scranton-Avoca | 41.33 | -74.73 | 1.98 |
| Williamsburg | 40.47 | -78.20 | 3.03 |
| Williamsport | 41.25 | -76.92 | 1.39 |
| Williamsport 2 | 41.23 | -76.90 | 1.35 |
| Wolfsburg | 40.05 | -78.53 | 4.10 |
| York | 39.92 | -76.75 | 2.22 |
| York Haven | 40.12 | -76.72 | 2.38 |
Last Updated on 5/31/01