S
M
T
W
T
F
S
30
89°
57°
31
90°
55°
1
87°
61°
2
91°
55°
3
91°
55°
4
97°
59°
5
97°
57°
6
91°
61°
7
90°
63°
8
84°
61°
9
79°
55°
10
90°
55°
11
91°
52°
12
75°
50°
13
90°
52°
14
88°
63°
15
73°
54°
16
84°
55°
17
86°
61°
18
86°
61°
19
79°
57°
20
72°
50°
21
73°
46°
22
84°
52°
23
81°
59°
24
74°
55°
25
77°
51°
26
87°
50°
27
87°
57°
28
82°
54°
29
67°
43°
30
72°
44°
1
75°
44°
2
82°
42°
3
68°
42°
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 87°, with overnight lows between 42° and 57°. The average high for September is 77° with an average low of 48°. 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.
