Mailing Address:
Pennsylvania State Climatologist503 Walker Building
University Park, PA 16802
| Year | January | February | March | April | May | June | July | August | September | October | November | December |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2008 | 1.4 | 4.3 | 3.4 | 5.9 | 5.8 | 3.4 | 3.7 | 2.1 | 6.9 | 2.1 | 2.4 | 4.4 |
| 2007 | 2.6 | 2.7 | 4.5 | 4.5 | 1.2 | 3.0 | 2.9 | 4.8 | 0.9 | 4.8 | 2.5 | 4.9 |
| 2006 | 4.0 | 2.4 | 0.3 | 3.5 | 2.4 | 9.9 | 3.8 | 1.1 | 6.4 | 5.1 | 5.3 | 2.2 |
| 2005 | 3.8 | 1.8 | 4.6 | 4.0 | 2.6 | 2.7 | 7.2 | 2.7 | 0.4 | 8.6 | 3.3 | 2.8 |
| 2004 | 2.1 | 2.8 | 2.4 | 5.5 | 4.5 | 5.9 | 6.0 | 4.3 | 6.8 | 1.8 | 3.9 | 3.4 |
| 2003 | 2.9 | 5.8 | 3.7 | 2.7 | 7.1 | 6.8 | 4.0 | 5.5 | 9.1 | 5.0 | 4.5 | 5.5 |
| 2002 | 2.1 | 0.4 | 4.0 | 2.8 | 3.6 | 2.9 | 2.6 | 3.4 | 4.4 | 6.4 | 3.9 | 4.6 |
| 2001 | 4.0 | 1.9 | 4.7 | 2.3 | 3.8 | 4.5 | 2.1 | 3.1 | 3.9 | 1.0 | 1.7 | 1.8 |
| 2000 | 3.2 | 2.4 | 4.8 | 4.4 | 3.5 | 4.1 | 5.3 | 4.1 | 5.8 | 0.4 | 2.0 | 3.0 |
| 1999 | 5.9 | 3.0 | 4.0 | 2.9 | 1.9 | 2.3 | 1.6 | 4.5 | 10.8 | 2.9 | 2.0 | 3.1 |
| 1998 | 6.0 | 4.9 | 6.3 | 3.9 | 5.5 | 4.7 | 3.2 | 2.6 | 1.8 | 2.8 | 1.1 | 1.2 |
| 1997 | 2.6 | 1.9 | 5.3 | 1.9 | 2.0 | 2.2 | 1.8 | 3.2 | 3.1 | 2.2 | 5.7 | 2.4 |
| 1996 | 6.0 | 2.2 | 4.0 | 3.9 | 5.7 | 7.0 | 8.7 | 4.0 | 7.1 | 5.0 | 3.8 | 7.0 |
| 1995 | 4.2 | 1.9 | 1.8 | 2.0 | 4.4 | 3.4 | 3.6 | 2.2 | 3.5 | 6.5 | 4.7 | 2.6 |
| 1994 | 4.6 | 3.6 | 7.2 | 2.6 | 4.1 | 1.9 | 4.9 | 5.9 | 3.2 | 1.3 | 3.6 | 2.6 |
| 1993 | 2.4 | 2.9 | 7.9 | 6.4 | 2.2 | 4.0 | 2.7 | 3.6 | 5.7 | 3.5 | 5.1 | 4.7 |
| 1992 | 1.7 | 2.3 | 4.5 | 2.5 | 4.1 | 2.7 | 5.5 | 2.6 | 5.0 | 2.0 | 5.0 | 4.5 |
| 1991 | 3.4 | 1.2 | 4.9 | 2.3 | 2.0 | 2.0 | 2.7 | 3.6 | 4.1 | 2.0 | 2.4 | 4.6 |
| 1990 | 4.2 | 1.9 | 2.5 | 4.3 | 6.6 | 2.9 | 4.4 | 6.3 | 1.8 | 5.8 | 2.5 | 5.5 |
| 1989 | 3.1 | 3.0 | 4.6 | 2.1 | 10.3 | 5.9 | 5.6 | 1.7 | 3.5 | 4.9 | 2.5 | 1.5 |
| 1988 | 2.8 | 3.0 | 2.3 | 2.8 | 8.1 | 0.6 | 5.4 | 3.9 | 2.8 | 1.9 | 4.7 | 1.2 |
| 1987 | 5.0 | 1.7 | 2.2 | 3.2 | 3.7 | 3.4 | 3.8 | 1.5 | 8.0 | 2.8 | 4.2 | 2.3 |
| 1986 | 2.3 | 3.9 | 1.8 | 3.4 | 1.4 | 1.6 | 2.5 | 4.2 | 0.9 | 2.5 | 6.4 | 5.7 |
| 1985 | 1.8 | 3.1 | 2.8 | 0.6 | 5.6 | 2.6 | 4.9 | 3.3 | 4.3 | 3.0 | 5.5 | 1.3 |
| 1984 | 1.7 | 5.2 | 5.6 | 4.3 | 5.7 | 2.4 | 5.0 | 5.2 | 1.7 | 3.6 | 3.6 | 1.9 |
| 1983 | 2.2 | 3.1 | 6.3 | 8.2 | 5.7 | 5.2 | 0.7 | 2.5 | 2.2 | 5.2 | 5.7 | 6.9 |
| 1982 | 3.6 | 3.3 | 2.6 | 4.5 | 3.0 | 6.1 | 2.6 | 1.9 | 3.3 | 1.9 | 3.3 | 1.8 |
| 1981 | 0.5 | 5.2 | 1.4 | 3.8 | 4.4 | 5.6 | 4.2 | 2.6 | 2.8 | 3.3 | 0.6 | 2.9 |
| 1980 | 2.1 | 0.9 | 6.2 | 4.2 | 4.8 | 3.8 | 3.6 | 2.3 | 1.4 | 3.1 | 3.4 | 0.8 |
| 1979 | 8.4 | 5.4 | 2.7 | 3.2 | 4.6 | 4.1 | 4.0 | 7.3 | 9.4 | 6.8 | 3.0 | 1.4 |
| 1978 | 7.5 | 0.9 | 4.4 | 1.5 | 6.2 | 3.4 | 4.7 | 5.1 | 1.8 | 1.5 | 3.2 | 5.2 |
| 1977 | 1.5 | 0.7 | 4.8 | 4.2 | 1.4 | 4.3 | 3.3 | 4.0 | 1.7 | 5.2 | 5.3 | 5.9 |
| 1976 | 5.3 | 1.6 | 2.4 | 2.3 | 4.9 | 3.6 | 5.1 | 3.1 | 5.2 | 8.5 | 0.7 | 1.8 |
| 1975 | 3.7 | 2.6 | 5.0 | 3.0 | 5.1 | 6.5 | 7.1 | 3.7 | 11.7 | 3.3 | 2.7 | 3.1 |
| 1974 | 3.6 | 1.2 | 4.3 | 3.2 | 4.4 | 4.4 | 1.9 | 3.7 | 6.3 | 1.3 | 2.0 | 6.0 |
| 1973 | 3.3 | 3.4 | 3.6 | 7.1 | 5.0 | 4.4 | 2.9 | 3.4 | 4.4 | 2.8 | 1.1 | 6.8 |
| 1972 | 2.8 | 5.5 | 2.8 | 5.4 | 5.1 | 14.2 | 3.0 | 2.2 | 1.6 | 3.3 | 8.0 | 6.6 |
| 1971 | 3.0 | 5.6 | 2.3 | 2.0 | 7.1 | 2.5 | 4.4 | 11.0 | 5.2 | 6.3 | 4.8 | 1.2 |
| 1970 | 1.0 | 3.0 | 3.7 | 5.1 | 2.4 | 5.4 | 6.8 | 2.8 | 1.2 | 3.3 | 4.9 | 3.4 |
| 1969 | 1.5 | 1.8 | 1.8 | 2.3 | 1.9 | 3.0 | 5.3 | 3.8 | 4.8 | 1.5 | 2.7 | 7.2 |
| 1968 | 2.3 | 0.6 | 4.3 | 1.8 | 5.8 | 3.9 | 2.2 | 3.5 | 3.7 | 3.4 | 4.2 | 2.5 |
| 1967 | 1.4 | 1.9 | 4.9 | 1.9 | 4.0 | 2.3 | 5.2 | 9.9 | 0.9 | 2.4 | 2.3 | 5.2 |
| 1966 | 3.7 | 4.0 | 1.4 | 4.3 | 3.6 | 1.1 | 1.5 | 1.7 | 8.3 | 3.4 | 2.4 | 3.1 |
| 1965 | 3.1 | 3.0 | 4.1 | 1.8 | 2.3 | 2.0 | 2.8 | 4.0 | 2.5 | 3.0 | 1.0 | 0.8 |
| 1964 | 4.2 | 3.4 | 2.9 | 5.2 | 0.8 | 1.5 | 3.4 | 1.8 | 2.8 | 1.2 | 2.1 | 4.4 |
| 1963 | 1.8 | 1.9 | 4.5 | 1.5 | 2.1 | 4.7 | 1.8 | 4.1 | 3.6 | 0.2 | 6.7 | 2.0 |
| 1962 | 2.6 | 4.2 | 3.8 | 3.8 | 2.5 | 3.8 | 2.4 | 1.1 | 2.4 | 2.6 | 5.0 | 2.8 |
| 1961 | 3.0 | 4.0 | 4.0 | 5.1 | 2.5 | 4.5 | 3.5 | 4.2 | 1.2 | 2.5 | 2.8 | 3.2 |
| 1960 | 2.7 | 4.0 | 2.1 | 3.5 | 6.5 | 2.7 | 5.7 | 4.7 | 6.2 | 1.6 | 2.2 | 2.4 |
| 1959 | 2.5 | 2.1 | 2.8 | 3.5 | 2.6 | 3.2 | 5.1 | 4.5 | 2.4 | 4.8 | 2.8 | 3.5 |
| 1958 | 3.9 | 3.8 | 5.7 | 4.5 | 3.5 | 4.6 | 6.7 | 4.6 | 2.3 | 2.5 | 2.8 | 1.2 |
| 1957 | 2.5 | 2.9 | 2.5 | 3.7 | 2.6 | 3.6 | 1.7 | 1.9 | 5.9 | 2.8 | 3.1 | 6.2 |
| 1956 | 2.4 | 3.9 | 4.4 | 2.6 | 2.4 | 3.4 | 7.4 | 2.6 | 4.0 | 3.5 | 3.0 | 3.4 |
| 1955 | 0.4 | 2.9 | 4.7 | 3.0 | 2.2 | 5.6 | 1.5 | 13.7 | 1.3 | 4.8 | 1.6 | 0.2 |
| 1954 | 1.8 | 1.2 | 3.8 | 3.3 | 2.9 | 0.9 | 2.5 | 5.1 | 1.7 | 3.5 | 2.5 | 3.2 |
| 1953 | 4.8 | 2.5 | 6.4 | 4.0 | 6.4 | 2.3 | 3.3 | 2.8 | 4.1 | 2.7 | 1.9 | 3.9 |
| 1952 | 4.6 | 1.9 | 5.1 | 8.3 | 6.3 | 3.6 | 4.8 | 5.0 | 4.6 | 1.1 | 6.7 | 3.6 |
| 1951 | 2.9 | 3.5 | 3.2 | 3.7 | 2.9 | 8.4 | 3.6 | 1.7 | 2.3 | 2.0 | 5.9 | 4.8 |
| 1950 | 2.2 | 3.6 | 4.7 | 1.5 | 5.0 | 3.7 | 3.4 | 3.5 | 6.5 | 3.0 | 3.5 | 4.3 |
| 1949 | 5.9 | 3.4 | 2.7 | 3.4 | 5.1 | 1.8 | 6.1 | 3.8 | 3.0 | 3.9 | 1.3 | 2.9 |
| 1948 | 4.9 | 2.0 | 3.8 | 3.7 | 7.2 | 5.7 | 3.0 | 5.5 | 2.5 | 3.2 | 5.7 | 5.4 |
| 1947 | 3.6 | 1.7 | 1.6 | 2.2 | 6.3 | 4.1 | 4.7 | 2.8 | 2.9 | 1.4 | 5.7 | 1.5 |
| 1946 | 1.6 | 2.5 | 2.6 | 1.3 | 7.2 | 5.1 | 4.8 | 4.7 | 3.8 | 2.9 | 1.1 | 2.0 |
| 1945 | 3.4 | 3.1 | 1.8 | 4.0 | 4.0 | 3.9 | 9.5 | 4.8 | 5.6 | 1.3 | 4.7 | 4.8 |
| 1944 | 3.3 | 2.2 | 6.0 | 4.1 | 2.7 | 3.4 | 2.0 | 2.8 | 5.2 | 3.6 | 3.3 | 3.9 |
| 1943 | 3.0 | 1.8 | 3.8 | 3.3 | 5.1 | 2.7 | 2.3 | 1.4 | 1.5 | 5.6 | 4.2 | 1.4 |
| 1942 | 2.1 | 2.4 | 5.8 | 1.2 | 5.3 | 4.3 | 5.9 | 8.2 | 3.5 | 7.4 | 2.7 | 4.1 |
| 1941 | 3.2 | 1.3 | 2.2 | 2.9 | 2.6 | 5.2 | 4.4 | 2.8 | 0.8 | 1.5 | 2.0 | 3.6 |
| 1940 | 1.9 | 3.2 | 4.2 | 6.4 | 4.6 | 1.9 | 3.5 | 5.2 | 4.2 | 2.6 | 5.4 | 2.9 |
| 1939 | 3.9 | 5.3 | 3.4 | 5.3 | 0.9 | 5.5 | 3.1 | 3.8 | 3.1 | 5.1 | 1.2 | 2.3 |
| 1938 | 2.3 | 2.5 | 2.7 | 1.9 | 3.9 | 4.1 | 6.4 | 3.3 | 5.8 | 1.8 | 2.9 | 3.1 |
| 1937 | 6.8 | 3.8 | 1.9 | 6.6 | 2.9 | 5.8 | 4.5 | 6.6 | 1.4 | 8.1 | 3.8 | 1.2 |
| 1936 | 5.9 | 3.3 | 5.7 | 2.7 | 2.2 | 2.9 | 4.3 | 4.6 | 2.1 | 3.8 | 1.0 | 6.2 |
| 1935 | 4.3 | 2.6 | 3.0 | 3.5 | 3.3 | 4.6 | 4.2 | 2.3 | 6.4 | 3.1 | 4.5 | 2.6 |
| 1934 | 2.6 | 2.5 | 4.2 | 3.0 | 4.6 | 3.4 | 2.3 | 4.8 | 10.6 | 1.1 | 3.7 | 3.2 |
| 1933 | 2.9 | 3.0 | 5.0 | 5.9 | 5.0 | 2.9 | 5.1 | 11.1 | 3.6 | 2.4 | 1.2 | 2.6 |
| 1932 | 5.2 | 2.1 | 5.6 | 1.7 | 5.7 | 3.4 | 2.8 | 2.9 | 2.2 | 7.2 | 6.0 | 3.0 |
| 1931 | 1.9 | 1.7 | 4.5 | 3.0 | 4.0 | 3.6 | 4.3 | 6.8 | 2.3 | 1.5 | 0.9 | 2.4 |
| 1930 | 2.6 | 2.4 | 2.2 | 3.1 | 1.9 | 3.5 | 1.5 | 0.5 | 0.8 | 0.3 | 0.7 | 3.0 |
| 1929 | 2.9 | 3.3 | 2.9 | 7.0 | 3.3 | 5.1 | 1.5 | 2.3 | 3.6 | 6.1 | 2.3 | 2.4 |
| 1928 | 2.5 | 3.1 | 2.9 | 6.2 | 2.5 | 6.9 | 4.6 | 8.9 | 4.2 | 0.8 | 1.8 | 0.9 |
| 1927 | 1.6 | 4.1 | 1.6 | 5.8 | 2.9 | 3.6 | 3.5 | 3.6 | 1.0 | 7.0 | 2.7 | 3.8 |
| 1926 | 2.9 | 4.4 | 2.0 | 1.6 | 1.6 | 2.6 | 4.7 | 6.7 | 5.8 | 3.8 | 5.0 | 2.9 |
| 1925 | 4.4 | 1.5 | 2.1 | 2.2 | 2.1 | 2.1 | 5.4 | 2.1 | 2.0 | 5.9 | 3.2 | 1.6 |
| 1924 | 4.2 | 3.6 | 4.7 | 5.0 | 7.0 | 5.8 | 2.1 | 3.6 | 7.1 | 0.1 | 1.5 | 2.0 |
| 1923 | 4.2 | 2.7 | 3.7 | 4.3 | 2.2 | 2.8 | 4.2 | 2.6 | 3.6 | 2.2 | 2.4 | 3.9 |
| 1922 | 3.9 | 2.9 | 4.8 | 1.6 | 3.5 | 5.6 | 5.2 | 2.5 | 2.4 | 2.0 | 0.5 | 3.7 |
| 1921 | 2.0 | 2.8 | 2.4 | 3.0 | 6.1 | 2.2 | 4.5 | 3.4 | 4.1 | 0.9 | 4.7 | 2.6 |
| 1920 | 2.1 | 3.5 | 2.7 | 5.5 | 1.7 | 5.7 | 4.5 | 6.8 | 3.5 | 0.7 | 3.1 | 3.7 |
| 1919 | 3.0 | 2.3 | 3.8 | 3.2 | 5.4 | 3.3 | 7.0 | 5.1 | 2.1 | 3.6 | 3.6 | 2.8 |
| 1918 | 4.0 | 1.9 | 3.3 | 6.8 | 4.0 | 2.1 | 3.2 | 3.3 | 4.1 | 1.5 | 1.5 | 4.7 |
| 1917 | 3.0 | 2.0 | 4.8 | 2.2 | 2.7 | 4.5 | 6.1 | 3.8 | 2.4 | 5.9 | 0.5 | 1.3 |
| 1916 | 1.4 | 3.3 | 4.0 | 3.7 | 3.4 | 7.0 | 5.4 | 1.9 | 3.4 | 2.0 | 2.3 | 3.5 |
| 1915 | 6.4 | 4.9 | 0.9 | 1.2 | 3.9 | 5.2 | 3.6 | 9.1 | 2.6 | 3.7 | 1.4 | 3.4 |
| 1914 | 4.4 | 2.9 | 2.2 | 4.5 | 2.2 | 4.0 | 2.6 | 4.9 | 1.1 | 1.5 | 2.1 | 4.0 |
| 1913 | 3.1 | 1.3 | 5.0 | 4.4 | 4.2 | 1.8 | 2.6 | 3.7 | 2.4 | 4.9 | 2.1 | 2.5 |
| 1912 | 2.4 | 2.4 | 6.8 | 2.6 | 4.1 | 4.1 | 5.4 | 3.4 | 7.1 | 1.5 | 1.8 | 4.0 |
| 1911 | 3.6 | 2.0 | 2.3 | 2.8 | 1.2 | 4.4 | 2.7 | 10.8 | 3.3 | 3.8 | 3.7 | 3.9 |
| 1910 | 4.8 | 3.0 | 0.5 | 6.9 | 3.1 | 6.0 | 1.7 | 2.5 | 2.6 | 2.5 | 2.0 | 2.1 |
| 1909 | 2.8 | 4.1 | 3.6 | 3.2 | 3.4 | 5.3 | 1.2 | 2.7 | 3.4 | 1.9 | 0.8 | 3.9 |
| 1908 | 3.1 | 4.7 | 3.5 | 1.9 | 6.3 | 1.7 | 4.6 | 4.8 | 2.4 | 2.4 | 0.6 | 2.9 |
| 1907 | 3.6 | 2.4 | 3.4 | 3.2 | 4.1 | 6.2 | 3.6 | 4.2 | 7.0 | 2.3 | 5.3 | 4.4 |
| 1906 | 2.4 | 2.2 | 4.6 | 4.0 | 2.6 | 6.5 | 4.6 | 8.3 | 1.1 | 5.6 | 0.9 | 4.4 |
| 1905 | 3.9 | 2.1 | 3.2 | 2.8 | 2.6 | 4.8 | 7.3 | 5.3 | 2.2 | 3.1 | 1.4 | 4.5 |
| 1904 | 3.0 | 1.6 | 3.0 | 2.6 | 2.8 | 4.8 | 5.3 | 3.2 | 4.0 | 2.7 | 1.4 | 2.9 |
| 1903 | 4.3 | 4.9 | 5.0 | 4.2 | 2.6 | 6.6 | 6.1 | 6.0 | 1.5 | 3.9 | 0.9 | 1.6 |
| 1902 | 3.6 | 4.7 | 4.0 | 3.2 | 1.9 | 5.4 | 4.5 | 2.0 | 6.6 | 6.5 | 2.8 | 6.7 |
| 1901 | 2.6 | 0.6 | 3.7 | 6.0 | 4.8 | 3.0 | 5.4 | 5.7 | 3.5 | 0.9 | 3.1 | 7.9 |
| 1900 | 2.1 | 5.3 | 3.1 | 1.6 | 2.2 | 4.7 | 3.5 | 3.1 | 3.8 | 1.7 | 2.9 | 2.2 |
| 1899 | 3.1 | 5.3 | 4.7 | 1.6 | 3.9 | 2.8 | 3.3 | 4.2 | 6.0 | 2.2 | 2.2 | 1.9 |
| 1898 | 3.9 | 1.7 | 4.1 | 2.0 | 4.6 | 1.2 | 3.1 | 6.8 | 1.0 | 5.3 | 4.0 | 3.9 |
| 1897 | 2.0 | 5.4 | 2.9 | 3.1 | 5.8 | 2.7 | 7.0 | 3.6 | 1.6 | 2.0 | 5.7 | 3.7 |
| 1896 | 1.7 | 5.7 | 4.3 | 1.4 | 3.0 | 4.0 | 5.0 | 1.3 | 5.1 | 1.1 | 3.0 | 0.3 |
| 1895 | 4.1 | 1.1 | 2.6 | 5.2 | 3.3 | 4.2 | 3.0 | 1.6 | 1.8 | 1.7 | 1.4 | 2.8 |