S
M
T
W
T
F
S
26
55°
30°
27
58°
33°
28
62°
37°
29
60°
37°
30
61°
36°
1
61°
37°
2
62°
38°
3
64°
39°
4
65°
39°
5
66°
38°
6
64°
35°
7
61°
31°
8
55°
29°
9
57°
39°
10
62°
40°
11
67°
41°
12
68°
41°
13
70°
42°
14
71°
43°
15
70°
44°
16
69°
42°
17
70°
44°
18
69°
44°
19
70°
43°
20
74°
44°
21
73°
37°
22
66°
34°
23
64°
40°
24
73°
39°
25
71°
43°
26
74°
42°
27
74°
36°
28
70°
34°
29
65°
38°
30
72°
42°
31
78°
44°
1
78°
46°
2
79°
46°
3
79°
48°
4
80°
48°
5
80°
42°
6
77°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Green River
Green River's May 2026 forecast shows daily high temperatures ranging from 55° to 80°, with overnight lows between 29° and 48°. The average high for May is 68° with an average low of 40°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Green River. See also: June | July | August.
