S
M
T
W
T
F
S
31
92°
57°
1
94°
57°
2
98°
56°
3
96°
58°
4
88°
62°
5
89°
63°
6
82°
59°
7
90°
56°
8
92°
58°
9
91°
59°
10
91°
61°
11
90°
63°
12
80°
62°
13
72°
54°
14
78°
47°
15
89°
48°
16
90°
53°
17
83°
51°
18
86°
48°
19
80°
53°
20
85°
53°
21
86°
54°
22
85°
62°
23
74°
50°
24
79°
50°
25
83°
47°
26
86°
55°
27
83°
53°
28
77°
53°
29
78°
49°
30
81°
51°
1
81°
49°
2
85°
48°
3
87°
57°
4
75°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Green River
Green River's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Green River. See also: October | November | December.
