S
M
T
W
T
F
S
30
70°
46°
31
70°
47°
1
75°
50°
2
70°
45°
3
72°
42°
4
75°
45°
5
73°
44°
6
69°
42°
7
67°
45°
8
72°
44°
9
70°
43°
10
71°
44°
11
74°
35°
12
73°
38°
13
76°
39°
14
78°
40°
15
77°
39°
16
77°
40°
17
75°
36°
18
72°
33°
19
74°
38°
20
74°
37°
21
73°
34°
22
74°
37°
23
74°
38°
24
73°
36°
25
72°
35°
26
71°
37°
27
70°
36°
28
65°
34°
29
69°
33°
30
70°
34°
1
69°
34°
2
67°
33°
3
62°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kemmerer
Kemmerer's September 2026 forecast shows daily high temperatures ranging from 62° to 78°, with overnight lows between 31° and 50°. The average high for September is 72° with an average low of 39°. 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 Kemmerer. See also: October | November | December.