S
M
T
W
T
F
S
30
74°
54°
31
65°
52°
1
65°
53°
2
64°
52°
3
63°
48°
4
62°
50°
5
62°
49°
6
60°
49°
7
61°
38°
8
60°
39°
9
60°
37°
10
61°
38°
11
58°
41°
12
62°
39°
13
58°
41°
14
63°
41°
15
69°
46°
16
70°
49°
17
71°
48°
18
70°
50°
19
71°
50°
20
71°
49°
21
69°
48°
22
70°
49°
23
68°
42°
24
64°
38°
25
61°
40°
26
61°
41°
27
59°
42°
28
64°
38°
29
60°
43°
30
63°
40°
1
64°
43°
2
63°
44°
3
66°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Standard
Standard's September 2026 forecast shows daily high temperatures ranging from 58° to 74°, with overnight lows between 37° and 54°. The average high for September is 64° with an average low of 45°. 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 Standard. See also: October | November | December.