Massachusetts December 1999 Average Temperature Rankings
1901-2000
Degrees Fahrenheit
1
32.8
28.1
4.7
108
22
1989
2015
1997
1998
top-third
2
38.8
33.7
5.1
121
9
1917
2015
1998
1994
top-tenth
1953,1990
3
42.2
39.1
3.1
112
18
1917
2015
1997
1998
top-third
1927,1979
4
47.7
44.4
3.3
118
12
1917
2015
1998
1990
top-tenth
5
51.9
49.1
2.8
116
14
1904
2015
1997
1998
top-third
6
55.4
52.5
2.9
118
12
1904
2015
1998
1990
top-tenth
1931,2018
7
57.2
54.2
3.0
121
9
1904
2021
1998
1999
top-tenth
2001
8
57.2
54.4
2.8
120
10
1917
2015
1998
1999
top-tenth
2006,2018
9
56.0
53.3
2.7
120
10
1917
2015
1998
1999
top-tenth
2001
10
54.1
51.4
2.7
120
10
1917
2021
1998
1999
top-tenth
11
51.9
49.0
2.9
120
10
1917
2012
1997
1998
top-tenth
12
49.8
46.9
2.9
120
10
1904
2012,2023
1997
1998
top-tenth
18
51.6
48.8
2.8
120
9
1904
2012
1998
1999
top-tenth
24
50.1
46.9
3.2
124
5
1905
2021
1998
1999
top-tenth
2013
36
49.2
46.9
2.3
117
11
1905
2023
1998
1999
top-tenth
2000,2019
48
48.7
46.9
1.8
109
18
1907
2023
1998
1999
top-third
2009,2010
60
48.5
46.9
1.6
105
21
1907
2023
1998
1953
top-third
2000,2006