Contiguous U.S. 18-Month Period Ending in January Average Temperature
Degrees Fahrenheit
1901-1967
-99
189701
50.61
-0.43
189801
50.57
-0.47
189901
50.63
-0.41
190001
50.17
-0.87
190101
51.78
0.74
190201
51.27
0.23
190301
50.83
-0.21
190401
49.89
-1.15
190501
49.97
-1.07
190601
50.53
-0.51
190701
50.81
-0.23
190801
50.91
-0.13
190901
51.20
0.16
191001
50.59
-0.45
191101
51.27
0.23
191201
50.81
-0.23
191301
49.58
-1.46
191401
50.79
-0.25
191501
50.98
-0.06
191601
50.40
-0.64
191701
50.26
-0.78
191801
48.96
-2.08
191901
50.72
-0.32
192001
50.74
-0.30
192101
50.32
-0.72
192201
52.00
0.96
192301
51.69
0.65
192401
50.91
-0.13
192501
50.12
-0.92
192601
51.13
0.09
192701
50.83
-0.21
192801
51.16
0.12
192901
50.68
-0.36
193001
49.92
-1.12
193101
51.06
0.02
193201
52.03
0.99
193301
51.68
0.64
193401
51.71
0.67
193501
53.03
1.99
193601
51.21
0.17
193701
50.69
-0.35
193801
51.08
0.04
193901
52.22
1.18
194001
51.88
0.84
194101
51.64
0.60
194201
51.69
0.65
194301
51.24
0.20
194401
51.28
0.24
194501
50.97
-0.07
194601
50.96
-0.08
194701
51.64
0.60
194801
50.98
-0.06
194901
50.87
-0.17
195001
51.12
0.08
195101
50.85
-0.19
195201
50.56
-0.48
195301
51.28
0.24
195401
52.02
0.98
195501
52.30
1.26
195601
51.26
0.22
195701
51.11
0.07
195801
51.42
0.38
195901
50.97
-0.07
196001
51.30
0.26
196101
50.72
-0.32
196201
50.89
-0.15
196301
50.49
-0.55
196401
51.53
0.49
196501
51.19
0.15
196601
50.51
-0.53
196701
51.07
0.03