S
M
T
W
T
F
S
30
80°
60°
31
82°
60°
1
83°
61°
2
83°
60°
3
82°
53°
4
81°
51°
5
74°
54°
6
75°
58°
7
79°
58°
8
81°
57°
9
80°
58°
10
79°
56°
11
78°
54°
12
79°
56°
13
79°
57°
14
78°
57°
15
79°
56°
16
79°
49°
17
77°
55°
18
76°
53°
19
76°
51°
20
73°
47°
21
68°
44°
22
68°
51°
23
69°
48°
24
72°
45°
25
67°
43°
26
66°
43°
27
67°
49°
28
72°
50°
29
73°
46°
30
69°
44°
1
65°
48°
2
65°
40°
3
65°
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 65° to 83°, with overnight lows between 40° and 61°. The average high for September is 75° with an average low of 52°. 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.
