S
M
T
W
T
F
S
30
85°
68°
31
92°
65°
1
95°
70°
2
97°
71°
3
98°
71°
4
98°
73°
5
96°
69°
6
81°
68°
7
84°
64°
8
85°
61°
9
87°
59°
10
92°
66°
11
94°
69°
12
87°
69°
13
90°
71°
14
90°
66°
15
84°
65°
16
86°
61°
17
91°
61°
18
95°
69°
19
87°
69°
20
88°
70°
21
89°
68°
22
78°
61°
23
64°
56°
24
66°
49°
25
74°
47°
26
76°
45°
27
73°
48°
28
74°
53°
29
75°
53°
30
75°
52°
1
73°
53°
2
72°
51°
3
73°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Advance
Advance's September 2026 forecast shows daily high temperatures ranging from 64° to 89°, with overnight lows between 45° and 68°. The average high for September is 74° 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 Advance. See also: October | November | December.