S
M
T
W
T
F
S
30
82°
68°
31
90°
72°
1
91°
69°
2
88°
69°
3
82°
68°
4
82°
70°
5
81°
65°
6
83°
62°
7
81°
56°
8
78°
64°
9
84°
62°
10
78°
54°
11
81°
51°
12
80°
55°
13
71°
47°
14
65°
40°
15
77°
55°
16
74°
52°
17
68°
58°
18
65°
56°
19
65°
56°
20
69°
54°
21
62°
51°
22
67°
46°
23
69°
41°
24
N/A
25
70°
54°
26
72°
45°
27
74°
51°
28
76°
56°
29
76°
52°
30
69°
62°
1
66°
49°
2
64°
41°
3
70°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Rock Springs
Rock Springs's September 2026 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 Rock Springs. See also: October | November | December.
