S
M
T
W
T
F
S
30
81°
62°
31
84°
66°
1
86°
66°
2
87°
65°
3
87°
61°
4
85°
57°
5
79°
58°
6
79°
61°
7
83°
63°
8
83°
64°
9
84°
63°
10
79°
62°
11
84°
63°
12
83°
63°
13
83°
62°
14
82°
63°
15
84°
63°
16
84°
61°
17
82°
62°
18
81°
55°
19
80°
54°
20
76°
51°
21
73°
51°
22
73°
56°
23
75°
54°
24
78°
51°
25
72°
50°
26
73°
51°
27
72°
50°
28
77°
55°
29
76°
54°
30
78°
55°
1
75°
56°
2
75°
54°
3
76°
54°
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 72° to 87°, with overnight lows between 50° and 66°. The average high for September is 80° with an average low of 58°. 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.
