April 1940 - March 1942 River Basins Average Temperature
-99
1901-2000 base period
Degrees Fahrenheit
127 years
1901-2000
201
Pacific Northwest Basin
45.4
1
95
44.4
202
California River Basin
57.5
0.2
60
57.4
203
Great Basin
48.5
0.1
57
48.4
204
Lower Colorado River Basin
57.9
-0.3
34
58.2
205
Upper Colorado River Basin
43.5
0
55
43.4
206
Rio Grande River Basin
58.3
-0.7
13
59
207
Texas Gulf Coast River Basin
64.7
-0.7
20
65.4
208
Arkansas-White-Red Basin
57
-0
56
57
209
Lower Mississippi River Basin
63.1
-0.4
30
63.5
210
Missouri River Basin
46.6
1.3
96
45.3
211
Souris-Red-Rainy Basin
40.6
2.1
112
38.5
212
Upper Mississippi River Basin
48.1
1.4
109
46.7
213
Great Lakes Basin
45.1
0.6
86
44.5
214
Tennessee River Basin
57.5
-0
47
57.5
215
Ohio River Basin
52.6
0.4
78
52.2
216
South Atlantic-Gulf Basin
63.5
-0.4
29
63.9
217
Mid-Atlantic Basin
49.8
-0.2
41
50
218
New England Basin
42.1
-0.1
49
42.2