S
M
T
W
T
F
S
26
98°
63°
27
85°
62°
28
89°
57°
29
82°
57°
30
87°
54°
31
93°
53°
1
94°
59°
2
97°
60°
3
88°
56°
4
86°
45°
5
87°
50°
6
91°
55°
7
95°
56°
8
92°
62°
9
90°
62°
10
90°
61°
11
88°
66°
12
77°
61°
13
77°
55°
14
75°
52°
15
80°
56°
16
82°
51°
17
87°
51°
18
80°
57°
19
87°
53°
20
92°
57°
21
93°
60°
22
87°
63°
23
84°
60°
24
85°
56°
25
86°
57°
26
88°
59°
27
87°
57°
28
87°
56°
29
83°
52°
30
87°
48°
31
85°
50°
1
85°
49°
2
84°
51°
3
85°
48°
4
85°
50°
5
80°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Green River
Green River's August 2026 forecast shows daily high temperatures ranging from 80° to 88°, with overnight lows between 48° and 59°. The average high for August is 85° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Green River. See also: September | October | November.