S
M
T
W
T
F
S
30
92°
62°
31
91°
60°
1
91°
59°
2
90°
59°
3
90°
58°
4
89°
57°
5
90°
55°
6
86°
50°
7
80°
51°
8
81°
55°
9
82°
52°
10
79°
53°
11
80°
55°
12
87°
54°
13
87°
46°
14
78°
45°
15
75°
44°
16
75°
45°
17
76°
48°
18
81°
45°
19
83°
48°
20
75°
50°
21
81°
51°
22
83°
51°
23
83°
50°
24
82°
51°
25
82°
50°
26
83°
50°
27
82°
49°
28
79°
46°
29
73°
47°
30
76°
43°
1
72°
44°
2
71°
46°
3
67°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Sterling
Sterling's September 2026 forecast shows daily high temperatures ranging from 67° to 92°, with overnight lows between 35° and 62°. The average high for September is 81° with an average low of 50°. 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 Sterling. See also: October | November | December.
