Mailing Address:
Pennsylvania State Climatologist503 Walker Building
University Park, PA 16802
| Year | January | February | March | April | May | June | July | August | September | October | November | December |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024 | 15.0 | 31.4 | 37.9 | 46.7 | 59.8 | 66.3 | 70.3 | 66.1 | 61.3 | 50.3 | 41.7 | 27.3 |
| 2023 | 65.4 | 61.9 | 53.2 | 36.4 | 35.3 | |||||||
| 2023 | 32.9 | 29.9 | 32.9 | 48.4 | 52.5 | 63.0 | 70.1 | 65.4 | 61.9 | 53.2 | 36.4 | 35.3 |
| 2022 | 18.3 | 27.8 | 34.0 | 44.5 | 58.1 | 64.2 | 69.7 | 69.9 | 61.5 | 46.6 | 39.6 | 28.9 |
| 2021 | 26.3 | 22.9 | 36.3 | 46.2 | 55.2 | 67.3 | 69.0 | 70.6 | 62.0 | 55.3 | 36.6 | 33.8 |
| 2020 | 30.5 | 29.0 | 37.6 | 40.9 | 54.1 | 64.3 | 73.3 | 69.9 | 60.7 | 50.8 | 42.4 | 29.0 |
| 2019 | 21.7 | 26.2 | 33.5 | 46.8 | 57.5 | 63.7 | 71.4 | 66.5 | 61.7 | 50.7 | 34.3 | 30.1 |
| 2018 | 18.9 | 32.3 | 29.6 | 39.4 | 61.6 | 62.6 | 71.0 | 70.6 | 64.7 | 51.9 | 33.2 | 30.5 |
| 2017 | 29.1 | 30.8 | 30.5 | 51.2 | 55.7 | 62.8 | 69.9 | 64.9 | 62.2 | 53.6 | 36.5 | 27.1 |
| 2016 | 22.8 | 29.6 | 38.6 | 42.9 | 53.9 | 64.1 | 71.2 | 70.8 | 62.9 | 48.7 | 38.6 | 28.8 |
| 2015 | 18.1 | 12.0 | 26.6 | 43.1 | 60.2 | 64.4 | 67.9 | 66.4 | 64.9 | 48.1 | 42.7 | 39.8 |
| 2014 | 17.5 | 18.6 | 25.5 | 44.3 | 56.7 | 65.1 | 67.3 | 64.6 | 60.9 | 51.0 | 34.8 | 31.0 |
| 2013 | 25.9 | 23.9 | 30.8 | 44.7 | 56.9 | 65.2 | 71.6 | 66.4 | 58.3 | 52.2 | 34.2 | 27.9 |
| 2012 | 27.7 | 31.7 | 42.4 | 44.5 | 61.5 | 64.6 | 72.3 | 68.0 | 60.0 | 51.3 | 35.8 | 33.6 |
| 2011 | 20.0 | 23.3 | 29.8 | 46.0 | 58.5 | 66.1 | 72.3 | 67.0 | 62.7 | 48.8 | 43.8 | 32.9 |
| 2010 | 23.3 | 24.8 | 38.9 | 49.9 | 58.0 | 66.5 | 71.2 | 68.5 | 60.7 | 49.2 | 38.2 | 24.4 |
| 2009 | 15.7 | 26.1 | 34.0 | 46.4 | 55.2 | 62.3 | 64.7 | 68.2 | 58.6 | 46.1 | 41.9 | 27.7 |
| 2008 | 26.6 | 24.2 | 30.7 | 48.5 | 51.1 | 66.8 | 68.7 | 64.3 | 60.5 | 46.1 | 36.6 | 27.6 |
| 2007 | 27.6 | 16.3 | 31.6 | 40.9 | 56.0 | 65.6 | 66.2 | 67.8 | 61.4 | 55.1 | 37.0 | 27.7 |
| 2006 | 31.3 | 26.7 | 32.5 | 46.5 | 54.9 | 64.0 | 70.1 | 66.9 | 57.6 | 46.1 | 41.7 | 35.6 |
| 2005 | 21.1 | 25.8 | 27.6 | 45.9 | 50.4 | 68.1 | 70.4 | 70.1 | 62.3 | 49.1 | 40.8 | 23.8 |
| 2004 | 15.8 | 22.2 | 36.0 | 44.8 | 61.2 | 61.8 | 66.9 | 66.6 | 62.1 | 47.9 | 39.9 | 28.0 |
| 2003 | 16.3 | 19.8 | 32.2 | 43.1 | 53.8 | 51.4 | 67.8 | 69.3 | 59.5 | 45.6 | 42.4 | 28.5 |
| 2002 | 29.9 | 31.3 | 34.7 | 46.9 | 52.3 | 65.7 | 70.1 | 69.6 | 63.1 | 46.8 | 36.4 | 24.7 |
| 2001 | 24.1 | 27.4 | 29.6 | 45.1 | 56.8 | 64.9 | 65.8 | 69.9 | 58.3 | 50.0 | 43.5 | 34.0 |
| 2000 | 21.4 | 26.9 | 39.3 | 44.5 | 57.4 | 64.7 | 65.4 | 58.2 | 58.2 | 49.4 | 36.2 | 20.4 |
| 1999 | 23.5 | 28.1 | 30.7 | 45.0 | 57.6 | 65.4 | 71.1 | 66.4 | 61.4 | 46.9 | 42.4 | 29.7 |
| 1998 | 30.4 | 31.4 | 36.2 | 46.3 | 60.3 | 63.6 | 67.3 | 68.1 | 62.2 | 49.8 | 38.7 | 33.6 |
| 1997 | 22.2 | 29.3 | 33.5 | 41.7 | 50.5 | 64.4 | 67.0 | 64.5 | 58.3 | 47.9 | 35.0 | 29.4 |
| 1996 | 20.2 | 23.7 | 28.3 | 43.9 | 53.5 | 66.1 | 67.1 | 67.7 | 60.3 | 48.8 | 33.7 | 32.4 |
| 1995 | 28.2 | 19.9 | 36.6 | 41.0 | 53.3 | 66.0 | 70.9 | 69.8 | 57.3 | 52.4 | 32.9 | 21.4 |
| 1994 | 14.4 | 19.4 | 29.2 | 46.4 | 52.3 | 66.9 | 70.8 | 64.6 | 58.1 | 47.1 | 42.1 | 31.9 |
| 1993 | 26.8 | 18.6 | 28.2 | 44.4 | 56.6 | 63.5 | 70.5 | 67.8 | 58.7 | 46.3 | 37.2 | 25.4 |
| 1992 | 25.6 | 26.6 | 30.3 | 42.9 | 53.7 | 61.3 | 66.2 | 63.1 | 58.2 | 44.2 | 36.9 | 27.4 |
| 1991 | 23.4 | 29.7 | 36.6 | 47.8 | 62.1 | 67.1 | 69.8 | 68.9 | 58.0 | 49.8 | 37.6 | 30.5 |
| 1990 | 32.2 | 30.1 | 37.3 | 47.1 | 53.1 | 63.9 | 68.0 | 66.5 | 58.7 | 52.1 | 41.1 | 32.6 |
| 1989 | 28.0 | 24.7 | 33.8 | 41.5 | 53.8 | 65.1 | 68.5 | 65.5 | 59.4 | 49.7 | 37.1 | 14.4 |
| 1988 | 20.1 | 23.5 | 34.0 | 43.3 | 56.1 | 62.3 | 72.0 | 70.0 | 56.9 | 43.5 | 39.6 | 26.7 |
| 1987 | 22.3 | 22.1 | 36.6 | 47.5 | 56.3 | 65.4 | 70.2 | 65.0 | 58.7 | 43.7 | 39.0 | 30.5 |
| 1986 | 23.8 | 23.8 | 35.4 | 47.0 | 58.6 | 62.6 | 67.6 | 64.1 | 58.2 | 48.6 | 34.1 | 29.5 |
| 1985 | 19.5 | 25.5 | 35.5 | 48.4 | 55.9 | 59.2 | 65.7 | 65.3 | 60.8 | 48.5 | 40.8 | 22.8 |
| 1984 | 18.9 | 32.4 | 25.6 | 43.9 | 52.5 | 64.4 | 65.6 | 68.0 | 56.6 | 52.7 | 36.7 | 33.9 |
| 1983 | 24.5 | 27.9 | 36.0 | 41.9 | 52.4 | 64.0 | 68.8 | 68.7 | 60.2 | 48.3 | 39.3 | 22.9 |
| 1982 | 15.1 | 24.1 | 31.8 | 41.6 | 57.9 | 60.5 | 67.4 | 62.2 | 59.1 | 48.1 | 40.7 | 33.6 |
| 1981 | 16.9 | 29.9 | 32.0 | 47.5 | 55.2 | 63.8 | 67.7 | 65.2 | 57.2 | 44.6 | 37.5 | 25.8 |
| 1980 | 23.7 | 20.4 | 30.4 | 45.1 | 56.5 | 60.8 | 68.4 | 69.6 | 60.8 | 44.3 | 34.2 | 22.2 |
| 1979 | 22.0 | 14.6 | 37.4 | 43.5 | 55.9 | 61.6 | 67.3 | 64.0 | 57.8 | 47.5 | 42.0 | 30.6 |
| 1978 | 18.7 | 15.2 | 28.5 | 41.5 | 54.0 | 61.7 | 66.3 | 67.1 | 57.6 | 45.4 | 38.4 | 27.2 |
| 1977 | 11.4 | 24.3 | 37.8 | 46.5 | 57.4 | 59.8 | 68.5 | 65.3 | 59.7 | 45.3 | 40.1 | 24.3 |
| 1976 | 16.9 | 29.6 | 36.5 | 46.0 | 51.3 | 65.2 | 64.0 | 63.8 | 56.4 | 42.6 | 31.3 | 20.1 |
| 1975 | 27.3 | 26.7 | 30.1 | 37.5 | 58.9 | 63.7 | 68.0 | 66.5 | 54.8 | 50.6 | 43.6 | 26.4 |
| 1974 | 27.0 | 22.0 | 33.5 | 47.0 | 53.1 | 61.7 | 66.6 | 65.7 | 55.8 | 44.0 | 38.6 | 29.2 |
| 1973 | 26.9 | 22.3 | 40.9 | 46.3 | 51.8 | 66.4 | 68.8 | 68.7 | 59.3 | 51.1 | 40.3 | 29.1 |
| 1972 | 25.8 | 20.4 | 30.0 | 40.6 | 56.7 | 60.7 | 68.3 | 65.1 | 60.0 | 43.4 | 35.1 | 30.8 |
| 1971 | 18.6 | 24.8 | 29.8 | 41.4 | 52.5 | 65.2 | 66.5 | 65.4 | 62.4 | 54.3 | 37.7 | 32.3 |
| 1970 | 15.1 | 22.9 | 28.6 | 44.5 | 56.9 | 62.3 | 68.0 | 66.9 | 61.0 | 51.3 | 40.0 | 27.8 |
| 1969 | 22.7 | 24.4 | 31.4 | 46.6 | 55.1 | 63.7 | 67.4 | 66.9 | 59.4 | 47.5 | 36.9 | 23.1 |
| 1968 | 17.8 | 20.3 | 35.6 | 48.3 | 51.0 | 62.7 | 68.9 | 67.0 | 60.6 | 50.1 | 38.2 | 24.9 |
| 1967 | 29.6 | 20.4 | 30.7 | 44.6 | 47.4 | 66.3 | 66.5 | 64.8 | 57.3 | 47.3 | 33.5 | 29.4 |
| 1966 | 20.3 | 24.2 | 34.8 | 41.4 | 50.6 | 64.3 | 69.5 | 67.1 | 56.3 | 45.8 | 39.9 | 27.5 |
| 1965 | 20.4 | 23.8 | 30.5 | 40.6 | 58.8 | 61.5 | 65.3 | 65.3 | 60.9 | 45.7 | 37.3 | 30.7 |
| 1964 | 24.9 | 21.3 | 34.6 | 42.9 | 57.6 | 62.5 | 70.3 | 62.8 | 59.1 | 46.1 | 41.5 | 28.0 |
| 1963 | 19.8 | 16.2 | 34.6 | 44.7 | 53.0 | 64.2 | 68.1 | 63.2 | 54.9 | 53.6 | 42.0 | 21.3 |
| 1962 | 22.8 | 22.4 | 32.2 | 45.0 | 58.9 | 64.4 | 66.0 | 65.2 | 55.0 | 48.9 | 34.7 | 23.0 |
| 1961 | 17.2 | 26.5 | 33.8 | 40.7 | 52.4 | 64.0 | 68.1 | 66.6 | 65.3 | 51.1 | 38.9 | 27.0 |
| 1960 | 26.8 | 27.9 | 22.4 | 49.5 | 54.7 | 63.2 | 65.7 | 66.9 | 60.8 | 47.5 | 40.4 | 19.7 |
| 1959 | 22.0 | 22.7 | 31.2 | 45.6 | 58.2 | 64.9 | 69.9 | 70.0 | 63.0 | 50.6 | 36.2 | 29.6 |
| 1958 | 22.5 | 17.5 | 32.2 | 45.6 | 52.5 | 58.9 | 68.8 | 65.3 | 58.5 | 46.9 | 39.2 | 18.9 |
| 1957 | 18.9 | 28.7 | 33.3 | 46.1 | 54.0 | 66.8 | 67.0 | 63.6 | 59.4 | 45.9 | 39.0 | 31.3 |
| 1956 | 23.0 | 26.9 | 28.5 | 41.5 | 50.9 | 64.6 | 65.5 | 65.0 | 55.7 | 49.3 | 38.9 | 32.2 |
| 1955 | 21.6 | 24.8 | 34.5 | 48.5 | 57.8 | 62.7 | 73.1 | 70.6 | 57.8 | 50.9 | 35.8 | 21.6 |
| 1954 | 21.7 | 31.0 | 32.7 | 46.8 | 53.1 | 65.4 | 66.7 | 64.6 | 59.6 | 52.4 | 37.3 | 26.8 |
| 1953 | 29.5 | 29.1 | 34.2 | 42.8 | 57.6 | 64.3 | 68.9 | 66.1 | 59.9 | 50.9 | 40.6 | 32.1 |
| 1952 | 26.5 | 27.3 | 31.5 | 46.8 | 52.0 | 65.4 | 71.1 | 66.1 | 60.4 | 44.1 | 39.8 | 29.2 |
| 1951 | 26.7 | 26.6 | 32.7 | 44.4 | 55.8 | 63.1 | 68.5 | 65.8 | 58.9 | 50.5 | 31.5 | 27.5 |
| 1950 | 32.9 | 24.4 | 26.9 | 40.0 | 54.6 | 62.8 | 65.5 | 65.3 | 56.1 | 50.8 | 38.5 | 22.4 |
| 1949 | 30.0 | 29.6 | 34.0 | 44.3 | 55.5 | 67.8 | 72.8 | 68.8 | 56.0 | 53.5 | 36.1 | 29.6 |
| 1948 | 15.6 | 21.7 | 33.7 | 46.5 | 53.8 | 64.0 | 68.8 | 67.8 | 61.5 | 47.3 | 43.6 | 28.9 |
| 1947 | 29.5 | 20.8 | 29.3 | 43.8 | 55.4 | 63.1 | 67.7 | 71.4 | 60.9 | 55.8 | 35.0 | 26.1 |
| 1946 | 25.3 | 24.2 | 43.6 | 44.0 | 54.5 | 62.8 | 68.5 | 63.6 | 62.1 | 54.1 | 41.9 | 29.9 |
| 1945 | 14.9 | 24.3 | 43.5 | 48.6 | 52.1 | 63.0 | 68.6 | 66.8 | 62.3 | 48.0 | 38.5 | 22.2 |
| 1944 | 27.0 | 24.0 | 28.8 | 40.4 | 62.2 | 65.0 | 69.5 | 69.3 | 60.7 | 46.9 | 38.0 | 22.1 |
| 1943 | 21.9 | 25.0 | 31.9 | 37.5 | 56.1 | 69.6 | 69.9 | 67.3 | 58.0 | 46.7 | 34.2 | 23.5 |
| 1942 | 21.8 | 21.1 | 36.4 | 48.8 | 58.9 | 65.3 | 70.1 | 67.0 | 60.0 | 50.1 | 37.5 | 22.9 |
| 1941 | 22.7 | 21.7 | 25.5 | 50.3 | 56.7 | 65.2 | 70.2 | 64.4 | 61.5 | 52.1 | 40.0 | 30.7 |
| 1940 | 16.7 | 23.8 | 26.9 | 40.3 | 56.4 | 64.0 | 68.9 | 65.0 | 57.9 | 45.7 | 36.7 | 30.6 |
| 1939 | 24.3 | 27.5 | 33.1 | 43.1 | 59.5 | 66.2 | 69.4 | 71.0 | 62.6 | 49.5 | 35.0 | 29.3 |
| 1938 | 24.0 | 28.6 | 38.5 | 47.1 | 54.8 | 63.9 | 70.1 | 70.7 | 57.3 | 50.9 | 38.6 | 28.1 |
| 1937 | 31.2 | 26.6 | 28.2 | 43.2 | 57.5 | 65.8 | 69.5 | 70.7 | 58.1 | 46.7 | 37.2 | 25.8 |
| 1936 | 19.5 | 16.5 | 38.6 | 43.3 | 59.3 | 65.1 | 69.6 | 69.4 | 62.1 | 49.8 | 34.2 | 30.2 |
| 1935 | 22.8 | 24.1 | 36.2 | 42.7 | 51.6 | 63.9 | 72.4 | 67.5 | 57.5 | 49.0 | 40.1 | 21.9 |
| 1934 | 27.2 | 13.6 | 31.6 | 45.6 | 58.6 | 69.0 | 71.7 | 65.1 | 62.9 | 48.0 | 41.7 | 26.5 |
| 1933 | 32.9 | 27.1 | 32.7 | 47.1 | 58.6 | 67.4 | 69.4 | 66.7 | 61.8 | 47.7 | 33.6 | 27.1 |
| 1932 | 36.1 | 29.6 | 29.1 | 42.0 | 55.7 | 64.3 | 67.6 | 68.4 | 61.0 | 51.1 | 35.8 | 30.0 |
| 1931 | 24.2 | 25.1 | 32.9 | 43.9 | 56.0 | 64.4 | 71.8 | 68.0 | 64.8 | 51.4 | 45.7 | 33.3 |
| 1930 | 25.6 | 29.2 | 33.5 | 43.2 | 57.1 | 66.2 | 69.1 | 66.7 | 63.2 | 47.5 | 38.2 | 26.4 |
| 1929 | 23.3 | 24.5 | 39.3 | 46.8 | 54.9 | 65.1 | 68.9 | 64.1 | 62.2 | 46.8 | 37.2 | 27.8 |
| 1928 | 25.6 | 25.1 | 32.0 | 42.0 | 54.4 | 62.8 | 69.9 | 70.1 | 57.2 | 51.5 | 39.3 | 30.9 |
| 1927 | 22.9 | 29.5 | 37.4 | 43.6 | 53.7 | 60.6 | 68.9 | 62.5 | 60.8 | 52.1 | 42.1 | 28.8 |
| 1926 | 24.2 | 23.3 | 28.4 | 40.7 | 54.4 | 60.9 | 68.7 | 67.8 | 59.2 | 47.7 | 36.5 | 22.5 |
| 1925 | 20.5 | 31.1 | 37.3 | 46.2 | 51.7 | 68.3 | 66.9 | 66.8 | 62.3 | 41.5 | 35.4 | 27.0 |
| 1924 | 24.7 | 21.1 | 31.9 | 41.8 | 51.0 | 62.0 | 66.8 | 66.4 | 56.5 | 49.0 | 36.5 | 25.6 |
| 1923 | 23.1 | 19.1 | 31.0 | 44.3 | 54.5 | 67.5 | 67.8 | 65.4 | 60.7 | 47.4 | 36.8 | 35.2 |
| 1922 | 20.2 | 27.7 | 35.2 | 45.3 | 58.7 | 65.8 | 68.9 | 66.2 | 62.6 | 50.9 | 38.8 | 27.0 |
| 1921 | 26.2 | 27.4 | 43.0 | 51.8 | 56.3 | 66.7 | 73.2 | 65.2 | 64.7 | 49.1 | 37.5 | 27.1 |
| 1920 | 15.2 | 20.2 | 33.6 | 42.3 | 52.9 | 63.5 | 66.4 | 67.0 | 60.7 | 54.4 | 35.9 | 29.5 |
| 1919 | 27.8 | 27.4 | 36.3 | 44.2 | 56.2 | 68.1 | 69.2 | 64.4 | 60.4 | 52.9 | 36.9 | 21.3 |
| 1918 | 12.6 | 22.3 | 35.7 | 44.8 | 61.0 | 62.2 | 67.4 | 69.5 | 54.5 | 51.8 | 38.4 | 31.9 |
| 1917 | 22.9 | 20.0 | 32.5 | 43.9 | 48.8 | 63.5 | 69.5 | 68.2 | 55.1 | 43.6 | 33.2 | 17.3 |
| 1916 | 29.6 | 20.4 | 24.6 | 43.6 | 56.8 | 60.7 | 71.4 | 68.7 | 59.5 | 48.5 | 37.0 | 26.0 |
| 1915 | 24.7 | 28.5 | 29.4 | 50.0 | 51.8 | 62.3 | 67.5 | 64.0 | 63.1 | 50.2 | 37.8 | 25.5 |
| 1914 | 24.4 | 17.3 | 29.7 | 42.5 | 57.7 | 64.6 | 67.8 | 67.4 | 58.1 | 52.7 | 35.9 | 23.5 |
| 1913 | 32.3 | 22.5 | 38.1 | 47.4 | 54.2 | 64.5 | 67.9 | 66.7 | 58.4 | 51.8 | 40.0 | 30.2 |
| 1912 | 14.8 | 19.7 | 28.7 | 44.8 | 57.5 | 61.9 | 68.0 | 62.7 | 60.9 | 50.3 | 39.3 | 30.7 |
| 1911 | 26.5 | 24.9 | 30.1 | 42.2 | 61.7 | 64.3 | 70.7 | 67.4 | 59.4 | 48.2 | 33.3 | 32.4 |
| 1910 | 23.3 | 22.5 | 39.7 | 49.3 | 53.9 | 62.3 | 69.6 | 66.5 | 60.4 | 51.7 | 32.8 | 20.1 |
| 1909 | 27.1 | 30.2 | 30.8 | 44.4 | 55.8 | 65.0 | 66.5 | 66.1 | 59.1 | 44.8 | 41.9 | 23.6 |
| 1908 | 23.7 | 20.1 | 35.4 | 45.1 | 57.7 | 65.7 | 71.2 | 66.2 | 63.1 | 51.3 | 37.1 | 27.6 |
| 1907 | 24.6 | 17.8 | 36.0 | 39.9 | 50.8 | 60.6 | 68.4 | 64.5 | 60.8 | 44.7 | 35.9 | 29.4 |
| 1906 | 30.8 | 23.6 | 27.4 | 45.1 | 55.9 | 66.0 | 68.5 | 69.5 | 62.8 | 48.2 | 37.2 | 25.9 |
| 1905 | 19.2 | 16.8 | 32.0 | 43.9 | 56.3 | 64.5 | 69.8 | 65.6 | 60.1 | 49.7 | 34.7 | 30.0 |
| 1904 | 15.9 | 16.8 | 30.1 | 40.6 | 58.6 | 64.8 | 67.7 | 64.1 | 58.8 | 46.9 | 34.2 | 21.2 |
| 1903 | 22.9 | 26.1 | 42.5 | 44.5 | 57.7 | 60.6 | 67.5 | 62.4 | 59.8 | 49.9 | 32.6 | 21.6 |
| 1902 | 21.1 | 20.7 | 37.8 | 44.3 | 54.5 | 62.4 | 68.1 | 63.8 | 59.0 | 49.0 | 43.2 | 24.0 |
| 1901 | 24.7 | 17.0 | 31.7 | 44.3 | 55.3 | 65.7 | 73.3 | 68.1 | 60.2 | 48.7 | 31.4 | 25.7 |
| 1900 | 25.1 | 22.8 | 25.7 | 45.4 | 56.1 | 66.8 | 71.0 | 70.7 | 63.4 | 55.6 | 39.7 | 27.2 |
| 1899 | 22.3 | 19.8 | 31.5 | 45.2 | 56.7 | 65.9 | 68.9 | 67.6 | 57.9 | 51.0 | 37.4 | 28.1 |