Harrisburg, Pennsylvania December 1939 Average Temperature Rankings
1991-2020
Degrees Fahrenheit
1
36.2
37.1
-0.9
40
37
1989
2015
1939
1939
normal
1986
2
39.5
41.8
-2.3
28
49
1989
2015
1939
1939
normal
1959,1977,1985
3
45.0
47.0
-2.0
34
43
1976
2015
1939
1939
normal
4
50.9
52.7
-1.8
31
45
1976
2015
1939
1939
normal
1965
5
56.3
57.4
-1.1
44
32
1976
2015
1939
1939
normal
2010
6
59.6
60.9
-1.3
41
35
1976
2015
1939
1939
normal
1968,2017
7
61.6
62.6
-1.0
47
29
1976
2015
1939
1939
normal
1961,2008,2017
8
62.2
62.9
-0.7
54
22
1976
2015
1939
1939
top-third
1949,1966,1971,1975
9
60.8
62.0
-1.2
45
31
1950,1976
2015
1939
1939
normal
1966,1987,2009
10
58.8
60.1
-1.3
39
37
1950
2016
1939
1939
normal
1942,1977
11
56.8
57.8
-1.0
47
29
1950
2012
1939
1939
normal
2008,2013
12
54.7
55.7
-1.0
47
29
1940
2023
1939
1939
normal
2009
18
-99
57.4
-99
-99
-99
1963,1977
2012,2016
normal
24
-99
55.7
-99
-99
-99
1963
2021
normal
36
-99
55.6
-99
-99
-99
1963,1964,1969,1978,1980
2023
normal
48
-99
55.6
-99
-99
-99
1963
2023
normal
60
-99
55.7
-99
-99
-99
1964,1980
2023
normal