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Pennsylvania State Climatologist503 Walker Building
University Park, PA 16802
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| MONTH | TEMPERATURE | DAYS WITH MAXIMA | DAYS WITH MINIMA | DEGREE DAYS | PRECIPITATION | SNOWFALL | DAYS WITH PRECIPITATION | ||||||||||||||||||||
| Daily Maximum | Daily Minimum | Monthly | Record Highest | Year | Day | Record Lowest | Year | Day | 90 and Above | 32 and Below | 32 and Below | 0 and Below | Heating Base 65 | Cooling Base 65 | Mean | Greatest Monthly | Year | Greatest Daily | Year | Day | Mean | Maximum Monthly | Year | 0.10 or more | 0.50 or more | 1.00 or more | |
| Jan | 32.6 | 15.5 | 24.0 | 72 | 1950 | 26 | -23 | 1948 | -- | -- | 14.7 | 27.9 | 5.7 | 1308 | v | 2.89 | 5.96 | 1950 | 1.55 | 1980 | 12 | 26.01 | 74.7 | 1978 | 7.5 | 1.3 | 0.2 |
| Feb | 34.8 | 15.1 | 25.2 | 67 | 1957 | 25 | -22 | 1967 | 27 | -- | 11.4 | 25.8 | 5.7 | 1148 | -- | 2.55 | 5.52 | 1981 | 3.32 | 1976 | 17 | 20.43 | 44.9 | 1972 | 6.5 | 1.2 | 0.3 |
| Mar | 44.2 | 23.8 | 34.0 | 80 | 1977 | 28 | -12 | 1980 | 2 | -- | 5.4 | 24.6 | 1.2 | 955 | -- | 3.29 | 6.55 | 1974 | 2.14 | 1974 | 9 | 17.45 | 45.1 | 1971 | 8.4 | 1.7 | 0.3 |
| Apr | 57.1 | 34.1 | 45.6 | 89 | 1990 | 28 | 5 | 1964 | 1 | -- | 0.4 | 14.2 | -- | 606 | -- | 3.53 | 6.60 | 1957 | 2.11 | 1981 | 29 | 5.14 | 17.5 | 1957 | 8.3 | 2.0 | 0.4 |
| May | 68.8 | 43.2 | 56.0 | 90 | 1962 | 19 | 21 | 1947 | -- | -- | -- | 3.5 | -- | 308 | 16 | 3.81 | 7.77 | 1989 | 2.10 | 1982 | 23 | 0.18 | 4.1 | 1963 | 8.2 | 2.5 | 0.7 |
| Jun | 77.3 | 52.4 | 64.8 | 96 | 1951 | 26 | 29 | 19778 | 15 | 1.1 | -- | 0.1 | -- | 75 | 57 | 4.41 | 10.11 | 1986 | 4.12 | 1981 | 9 | -- | -- | -- | 7.8 | 3.1 | 1.0 |
| Jul | 81.2 | 52.9 | 69.0 | 100 | 1988 | 17 | 38 | 1962 | 9 | 2.4 | -- | -- | -- | 12 | 124 | 4.42 | 10.23 | 1980 | 4.48 | 1996 | 19 | -- | -- | -- | 7.4 | 3.2 | 1.2 |
| Aug | 79.7 | 55.5 | 67.6 | 98 | 1987 | 16 | 33 | 1982 | 29 | 1.4 | -- | -- | -- | 31 | 100 | 4.29 | 9.69 | 1964 | 4.23 | 1971 | 21 | -- | -- | -- | 7.2 | 2.8 | 1.0 |
| Sep | 73.9 | 48.7 | 60.8 | 98 | 1953 | 3 | 27 | 1957 | 27 | 0.5 | -- | 0.4 | -- | 157 | 25 | 3.7 | 8.17 | 1980 | 2.76 | 1979 | 14 | -- | -- | -- | 7.5 | 2.5 | 0.7 |
| Oct | 62.0 | 38.7 | 50.4 | 88 | 1957 | 6 | 17 | 1988 | 21 | -- | -- | 7.1 | -- | 468 | -- | 3.61 | 9.72 | 1959 | 4.02 | 1959 | 1 | 0.98 | 6.8 | 1962 | 7.7 | 2.3 | 0.6 |
| Nov | 48.7 | 31.2 | 40.0 | 81 | 1959 | 2 | -1 | 1950 | 21 | -- | 1.8 | 18 | 0.1 | 750 | -- | 3.87 | 11.20 | 1985 | 2.98 | 1985 | 5 | 11.80 | 42.4 | 1950 | 8.9 | 2.3 | 0.4 |
| Dec | 36.7 | 21.2 | 29.0 | 72 | 1982 | 4 | -19 | 1951 | 17 | -- | 10.8 | 10.8 | 2.5 | 1116 | -- | 3.39 | 7.59 | 1990 | 2.04 | 1968 | 28 | 25.71 | 52.0 | 1977 | 9.5 | 1.8 | 0.2 |
| Year | 58.2 | 36.6 | 47.4 | 100 | 1988 | 17-Jul | -23 | 1949 | -- | 5.5 | 44.5 | 148.5 | 15.1 | 6934 | 322 | 43.73 | 57.36 | 1996 | 4.48 | 1996 | 19-Jan | 108.53 | 180.2 | 1977 | 95.6 | 26.7 | 7.1 |