S
M
T
W
T
F
S
30
79°
62°
31
80°
61°
1
79°
57°
2
72°
54°
3
71°
53°
4
72°
53°
5
72°
54°
6
77°
60°
7
79°
60°
8
79°
59°
9
78°
59°
10
79°
60°
11
79°
59°
12
80°
59°
13
79°
61°
14
80°
50°
15
70°
50°
16
67°
49°
17
70°
51°
18
68°
49°
19
69°
47°
20
68°
47°
21
75°
50°
22
75°
54°
23
74°
46°
24
74°
45°
25
68°
44°
26
68°
49°
27
71°
53°
28
72°
52°
29
71°
43°
30
65°
43°
1
64°
51°
2
66°
48°
3
68°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Atlas
Atlas's September 2026 forecast shows daily high temperatures ranging from 64° to 80°, with overnight lows between 43° and 62°. The average high for September is 73° with an average low of 53°. 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 Atlas. See also: October | November | December.
