Mailing Address:
Pennsylvania State Climatologist503 Walker Building
University Park, PA 16802
| Year | January | February | March | April | May | June | July | August | September | October | November | December | Yearly |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2010 | 8.9 | 20.1 | 3.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.5 | 6.0 | 38.7 |
| 2009 | 17.8 | 3.9 | 0.4 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 3.4 | 0.2 | 10.7 | 36.7 |
| 2008 | 4.6 | 15.4 | 5.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 2.8 | 14.3 | 42.5 |
| 2007 | 8.0 | 18.0 | 11.7 | 8.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 7.2 | 21.2 | 75 |
| 2006 | 6.8 | 5.6 | 5.1 | 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.5 | 18.7 |
| 2005 | 24.7 | 10.9 | 22.7 | 1.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.4 | 2.0 | 16.3 | 80.3 |
| 2004 | 18.0 | 12.3 | 10.6 | 0.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.2 | 4.4 | 47.3 |
| 2003 | 19.5 | 19.9 | 11.9 | 5.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.1 | 18.9 | 76.6 |
| 2002 | 11.7 | 3.0 | 4.3 | 0.1 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 | 0.6 | 5.1 | 17.0 | 42.4 |
| 2001 | 6.6 | 3.6 | 27.5 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 4.0 | 41.8 |
| 2000 | 18.3 | 10.7 | 1.1 | 4.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.2 | 10.5 | 47.1 |
| 1999 | 21.3 | 6.5 | 17.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.4 | 3.5 | 50.1 |
| 1998 | 9.5 | 12.1 | 9.3 | 0.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.7 | 33 |
| 1997 | 14.0 | 9.7 | 7.4 | 4.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 6.2 | 19.3 | 60.6 |
| 1996 | 40.9 | 2.9 | 12.4 | 5.3 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 5.2 | 20.2 | 87.2 |
| 1995 | 6.4 | 12.0 | 3.9 | 2.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 17.6 | 25.9 | 68.1 |
| 1994 | 45.8 | 19.7 | 27.2 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.5 | 0.8 | 96.3 |
| 1993 | 6.6 | 23.0 | 45.1 | 8.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 3.4 | 9.1 | 11.5 | 106.8 |
| 1992 | 9.1 | 10.1 | 20.0 | 2.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 3.0 | 16.3 | 60.6 |
| 1991 | 7.1 | 9.2 | 10.6 | 2.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 | 9.0 | 39.4 |
| 1990 | 17.3 | 9.4 | 10.5 | 4.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.1 | 8.7 | 52.2 |
| 1989 | 4.4 | 7.3 | 4.3 | 0.6 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 3.0 | 15.2 | 35.1 |
| 1988 | 8.9 | 17.5 | 11.2 | 1.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 3.5 | 42.5 |
| 1987 | 40.2 | 6.8 | 2.1 | 1.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 7.6 | 13.8 | 72.3 |
| 1986 | 19.6 | 22.5 | 4.0 | 7.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 14.9 | 4.7 | 73.2 |
| 1985 | 11.0 | 12.2 | 4.4 | 2.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 3.9 | 13.1 | 47.1 |
| 1984 | 15.3 | 6.2 | 30.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 4.4 | 10.1 | 66.2 |
| 1983 | 14.8 | 10.2 | 8.6 | 21.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 7.0 | 7.2 | 69.1 |
| 1982 | 17.0 | 16.8 | 13.3 | 11.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 1.8 | 7.7 | 68.2 |
| 1981 | 9.2 | 9.0 | 6.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.5 | 13.5 | 40.1 |
| 1980 | 3.2 | 9.5 | 11.0 | 2.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 11.4 | 8.4 | 46.4 |
| 1979 | 14.2 | 13.8 | 0.9 | 3.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.8 | 6.3 | 39.2 |
| 1978 | 37.7 | 22.4 | 7.4 | 0.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 3.2 | 14.7 | 86.3 |
| 1977 | 16.4 | 10.0 | 14.1 | 1.6 | 2.6 | 0.0 | 0.0 | 0.0 | 0.0 | 5.8 | 6.6 | 23.5 | 80.6 |
| 1976 | 21.4 | 7.6 | 7.8 | 1.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 7.9 | 6.5 | 52.5 |
| 1975 | 11.3 | 11.0 | 5.9 | 1.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.3 | 10.3 | 42.5 |
| 1974 | 9.8 | 10.9 | 12.1 | 8.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 3.8 | 9.7 | 55.1 |
| 1973 | 4.0 | 10.0 | 2.0 | 2.1 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.4 | 17.3 | 37.8 |
| 1972 | 5.9 | 33.1 | 9.1 | 4.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.4 | 8.1 | 13.7 | 77.1 |
| 1971 | 12.5 | 17.4 | 24.3 | 0.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 13.5 | 4.5 | 72.9 |
| 1970 | 6.3 | 14.8 | 17.0 | 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.5 | 0.1 | 16.0 | 55.2 |
| 1969 | 2.5 | 11.6 | 1.6 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 5.0 | 36.9 | 57.7 |
| 1968 | 6.2 | 3.4 | 16.6 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 14.1 | 5.6 | 45.9 |
| 1967 | 5.6 | 11.9 | 30.8 | 5.2 | 0.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 11.4 | 9.3 | 74.6 |
| 1966 | 25.3 | 12.4 | 4.9 | 1.8 | 2.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.1 | 12.3 | 60.2 |
| 1965 | 16.5 | 2.0 | 9.0 | 11.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.9 | 1.4 | 1.3 | 42.3 |
| 1964 | 28.5 | 20.0 | 4.5 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 4.8 | 58.4 |
| 1963 | 14.2 | 13.6 | 13.8 | 0.6 | 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 3.1 | 13.9 | 59.7 |
| 1962 | 5.3 | 16.2 | 7.2 | 4.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 3.4 | 5.3 | 17.2 | 58.8 |
| 1961 | 17.3 | 22.9 | 10.9 | 14.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 4.4 | 8.8 | 78.3 |
| 1960 | 6.2 | 25.3 | 18.5 | 2.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.6 | 0.0 | 17.6 | 70.2 |
| 1959 | 10.9 | 4.7 | 18.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.8 | 15.3 | 50.5 |
| 1958 | 19.9 | 23.6 | 23.6 | 3.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 4.7 | 6.9 | 81.9 |
| 1957 | 12.6 | 7.0 | 13.8 | 14.2 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.5 | 0.4 | 6.5 | 55.3 |
| 1956 | 8.1 | 12.8 | 21.8 | 11.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 4.2 | 10.1 | 68.7 |
| 1955 | 4.0 | 13.3 | 4.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 7.9 | 12.1 | 42.3 |
| 1954 | 12.6 | 4.7 | 3.7 | 0.6 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 11.8 | 5.3 | 38.7 |
| 1953 | 8.1 | 11.0 | 6.2 | 2.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 12.5 | 3.1 | 43.4 |
| 1952 | 5.7 | 12.4 | 12.8 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.4 | 0.2 | 4.7 | 38.3 |
| 1951 | 9.4 | 5.4 | 9.3 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 11.2 | 16.4 | 51.8 |
| 1950 | 1.5 | 21.3 | 21.3 | 1.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 9.7 | 19.1 | 74.7 |