May - December 1920 River Basins Average Temperature
-99
1901-2000 base period
Degrees Fahrenheit
129 years
1901-2000
201
Pacific Northwest Basin
49
-0.8
26
49.8
202
California River Basin
60.7
-1.6
6
62.3
203
Great Basin
53.6
-0.9
23
54.5
204
Lower Colorado River Basin
62.4
-1.7
5
64
205
Upper Colorado River Basin
48.5
-1.5
10
50
206
Rio Grande River Basin
63.5
-0.7
24
64.2
207
Texas Gulf Coast River Basin
70
-0.9
20
70.9
208
Arkansas-White-Red Basin
62.5
-0.9
19
63.4
209
Lower Mississippi River Basin
68.3
-0.6
18
68.9
210
Missouri River Basin
52.4
-0.5
42
52.9
211
Souris-Red-Rainy Basin
49.4
1.3
103
48.1
212
Upper Mississippi River Basin
55.5
0.5
75
55
213
Great Lakes Basin
53.1
0.4
74
52.6
214
Tennessee River Basin
62.8
-0.6
28
63.4
215
Ohio River Basin
58.6
-0.4
35
59
216
South Atlantic-Gulf Basin
67.9
-0.9
15
68.8
217
Mid-Atlantic Basin
56.8
-0.2
35
57
218
New England Basin
50.7
0.3
65
50.4