S
M
T
W
T
F
S
30
74°
47°
31
81°
37°
1
83°
44°
2
69°
48°
3
73°
49°
4
72°
50°
5
76°
51°
6
72°
50°
7
68°
38°
8
69°
39°
9
77°
39°
10
81°
47°
11
79°
48°
12
74°
44°
13
64°
44°
14
70°
42°
15
76°
41°
16
76°
43°
17
75°
42°
18
71°
44°
19
71°
45°
20
78°
34°
21
74°
45°
22
64°
43°
23
64°
35°
24
65°
40°
25
68°
43°
26
69°
42°
27
64°
35°
28
61°
31°
29
57°
29°
30
57°
30°
1
59°
31°
2
60°
33°
3
65°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Salmon
Salmon's September 2026 forecast shows daily high temperatures ranging from 57° to 81°, with overnight lows between 29° and 48°. The average high for September is 69° 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 Salmon. See also: October | November | December.
