S
M
T
W
T
F
S
30
76°
54°
31
77°
59°
1
79°
61°
2
75°
62°
3
83°
62°
4
84°
60°
5
83°
57°
6
79°
51°
7
74°
54°
8
80°
58°
9
79°
52°
10
78°
57°
11
76°
51°
12
76°
56°
13
77°
57°
14
81°
52°
15
72°
55°
16
71°
56°
17
70°
55°
18
69°
54°
19
76°
47°
20
71°
53°
21
74°
47°
22
74°
49°
23
73°
47°
24
75°
47°
25
74°
54°
26
75°
53°
27
72°
55°
28
74°
52°
29
75°
44°
30
67°
50°
1
73°
53°
2
74°
49°
3
72°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Apollo
Apollo's September 2026 forecast shows daily high temperatures ranging from 67° to 84°, with overnight lows between 44° and 62°. The average high for September is 75° 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 Apollo. See also: October | November | December.