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 | 20.6 | 53.2 | 0.6 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.4 | 18.8 | 93.7 |
| 2009 | 20.0 | 9.5 | 0.2 | 1.6 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.5 | 14.9 | 46.8 |
| 2008 | 11.1 | 18.0 | 6.0 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.2 | 6.2 | 6.7 | 49.4 |
| 2007 | 13.4 | 18.7 | 11.6 | 3.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.8 | 8.6 | 56.4 |
| 2006 | 4.2 | 11.3 | 1.3 | 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 0.1 | 1.8 | 19.5 |
| 2005 | 13.3 | 9.0 | 16.6 | 3.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.9 | 2.9 | 13.7 | 62.3 |
| 2004 | 24.7 | 5.9 | 5.5 | 1.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 6.5 | 44.2 |
| 2003 | 19.0 | 29.1 | 3.8 | 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.2 | 17.9 | 71.5 |
| 2002 | 11.3 | 6.3 | 2.2 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.4 | 12.5 | 35 |
| 2001 | 16.3 | 2.9 | 11.2 | 0.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 0.0 | 3.0 | 34.3 |
| 2000 | 11.6 | 6.4 | 1.0 | 0.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 2.2 | 13.8 | 36 |
| 1999 | 18.0 | 3.9 | 19.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.2 | 3.6 | 46.1 |
| 1998 | 2.4 | 4.3 | 2.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.9 | 12.5 |
| 1997 | 2.7 | 5.8 | 1.3 | 1.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.4 | 9.2 | 21.8 |
| 1996 | 24.8 | 10.9 | 12.2 | 1.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.6 | 6.0 | 57.8 |
| 1995 | 7.8 | 8.4 | 5.0 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 14.5 | 14.6 | 50.5 |
| 1994 | 35.6 | 14.6 | 18.4 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.8 | 0.2 | 69.8 |
| 1993 | 2.5 | 15.7 | 26.6 | 0.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 | 4.1 | 8.6 | 58.9 |
| 1992 | 13.2 | 3.7 | 15.4 | 1.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 1.5 | 22.0 | 57.7 |
| 1991 | 9.5 | 6.6 | 5.9 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.1 | 4.3 | 27.6 |
| 1990 | 10.0 | 3.5 | 1.6 | 3.6 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 6.0 | 24.7 |
| 1989 | 5.6 | 6.2 | 5.1 | 0.9 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 3.1 | 18.1 | 39.3 |
| 1988 | 9.7 | 12.5 | 10.0 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.8 | 8.2 | 41.5 |
| 1987 | 16.7 | 2.2 | 4.0 | 8.6 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 5.1 | 6.6 | 43.2 |
| 1986 | 13.1 | 14.0 | 3.0 | 2.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.4 | 0.6 | 33.1 |
| 1985 | 21.7 | 13.7 | 0.3 | 5.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 12.2 | 53.4 |
| 1984 | 16.6 | 8.3 | 9.3 | 0.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 3.9 | 6.0 | 45 |
| 1983 | 6.2 | 14.0 | 2.2 | 1.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 5.2 | 10.5 | 39.2 |
| 1982 | 12.7 | 8.0 | 15.4 | 6.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.8 | 6.3 | 49.3 |
| 1981 | 17.9 | 11.6 | 12.7 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 1.5 | 15.8 | 59.7 |
| 1980 | 10.0 | 10.3 | 9.8 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 7.9 | 8.7 | 47.1 |
| 1979 | 20.2 | 21.5 | 2.1 | 0.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.9 | 2.5 | 48.1 |
| 1978 | 41.1 | 12.4 | 6.6 | 0.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.8 | 5.0 | 67.1 |
| 1977 | 23.0 | 8.7 | 2.0 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 5.1 | 10.1 | 49.9 |
| 1976 | 22.4 | 5.5 | 5.0 | 0.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 4.9 | 11.4 | 49.9 |
| 1975 | 11.7 | 11.8 | 7.1 | 1.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.7 | 5.1 | 37.4 |
| 1974 | 5.7 | 5.4 | 1.4 | 1.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 1.8 | 13.9 | 29.7 |
| 1973 | 3.3 | 6.5 | 4.3 | 1.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.3 | 6.5 | 23.4 |
| 1972 | 5.3 | 23.7 | 9.3 | 1.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 | 3.0 | 6.2 | 50 |
| 1971 | 12.2 | 15.7 | 18.2 | 0.3 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 10.0 | 1.9 | 58.3 |
| 1970 | 14.6 | 13.8 | 13.4 | 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.6 | 7.3 | 50.2 |
| 1969 | 4.2 | 6.3 | 4.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 5.2 | 19.0 | 38.9 |
| 1968 | 12.0 | 6.6 | 7.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 3.5 | 9.0 | 38.2 |
| 1967 | 3.6 | 20.0 | 17.8 | 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 4.7 | 9.0 | 55.6 |
| 1966 | 21.3 | 12.0 | 4.7 | 2.4 | 0.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 6.0 | 7.9 | 54.7 |
| 1965 | 12.3 | 9.3 | 14.3 | 0.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.0 | 1.5 | 38.8 |
| 1964 | 22.0 | 16.6 | 6.8 | 0.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.7 | 4.4 | 51.4 |
| 1963 | 12.0 | 18.0 | 5.6 | 0.1 | 1.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 3.0 | 18.1 | 58 |
| 1962 | 6.0 | 10.6 | 16.6 | 1.6 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.7 | 0.4 | 19.0 | 55.9 |
| 1961 | 21.1 | 20.9 | 1.3 | 3.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 1.9 | 7.1 | 55.4 |
| 1960 | 4.2 | 25.4 | 22.0 | 0.7 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 0.6 | 20.6 | 73.8 |
| 1959 | 13.4 | 2.9 | 8.0 | 2.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.1 | 10.1 | 39.4 |
| 1958 | 13.9 | 14.1 | 11.2 | 0.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 6.9 | 8.2 | 54.8 |
| 1957 | 11.9 | 6.9 | 5.6 | 1.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.5 | 0.4 | 6.0 | 33.2 |
| 1956 | 9.5 | 2.4 | 13.5 | 2.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.5 | 9.6 | 39.9 |
| 1955 | 9.9 | 10.8 | 5.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 7.0 | 3.9 | 37 |
| 1954 | 10.6 | 5.5 | 6.5 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.2 | 1.8 | 11.1 | 35.8 |
| 1953 | 9.0 | 3.6 | 39.1 | 3.6 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.9 | 3.7 | 61.9 |
| 1952 | 3.8 | 2.6 | 9.5 | 2.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 | 2.2 | 8.8 | 29.4 |
| 1951 | 11.1 | 3.9 | 5.5 | 0.9 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 6.9 | 19.6 | 47.9 |
| 1950 | 0.9 | 4.4 | 9.0 | 1.5 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 29.4 | 20.0 | 65.2 |