S
M
T
W
T
F
S
30
87°
55°
31
85°
52°
1
81°
47°
2
82°
48°
3
84°
49°
4
83°
52°
5
81°
54°
6
82°
51°
7
81°
50°
8
80°
53°
9
80°
51°
10
82°
51°
11
80°
50°
12
85°
49°
13
84°
51°
14
85°
50°
15
80°
46°
16
77°
48°
17
77°
50°
18
78°
51°
19
79°
50°
20
80°
51°
21
80°
51°
22
82°
52°
23
79°
51°
24
81°
52°
25
82°
52°
26
77°
53°
27
82°
53°
28
83°
52°
29
83°
52°
30
82°
51°
1
83°
52°
2
82°
52°
3
81°
51°
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 77° to 87°, with overnight lows between 46° and 55°. The average high for September is 81° with an average low of 51°. 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.
