S
M
T
W
T
F
S
30
78°
50°
31
77°
49°
1
78°
45°
2
76°
50°
3
76°
52°
4
77°
45°
5
73°
45°
6
74°
44°
7
75°
47°
8
74°
46°
9
76°
45°
10
75°
44°
11
72°
46°
12
72°
42°
13
73°
45°
14
74°
47°
15
Hist. Avg.
75°
41°
16
Hist. Avg.
75°
41°
17
Hist. Avg.
74°
40°
18
Hist. Avg.
74°
40°
19
Hist. Avg.
74°
40°
20
Hist. Avg.
73°
40°
21
Hist. Avg.
72°
39°
22
Hist. Avg.
72°
39°
23
Hist. Avg.
72°
39°
24
Hist. Avg.
71°
38°
25
Hist. Avg.
70°
38°
26
Hist. Avg.
70°
38°
27
Hist. Avg.
70°
37°
28
Hist. Avg.
69°
37°
29
Hist. Avg.
68°
37°
30
Hist. Avg.
68°
36°
1
Hist. Avg.
67°
36°
2
Hist. Avg.
67°
36°
3
Hist. Avg.
66°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Ammon
Ammon's September 2026 forecast shows daily high temperatures ranging from 72° to 78°, with overnight lows between 42° and 52°. The average high for September is 75° with an average low of 46°. 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 Ammon. See also: October | November | December.
