S
M
T
W
T
F
S
30
85°
53°
31
77°
52°
1
76°
53°
2
78°
59°
3
77°
53°
4
77°
60°
5
78°
59°
6
83°
54°
7
80°
52°
8
74°
51°
9
75°
51°
10
74°
56°
11
75°
50°
12
77°
50°
13
73°
49°
14
72°
56°
15
77°
55°
16
77°
47°
17
79°
46°
18
69°
46°
19
68°
47°
20
68°
47°
21
69°
48°
22
66°
47°
23
66°
50°
24
69°
51°
25
70°
51°
26
73°
52°
27
73°
48°
28
74°
42°
29
65°
42°
30
65°
49°
1
64°
51°
2
68°
50°
3
70°
48°
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 64° to 85°, with overnight lows between 42° and 60°. The average high for September is 73° with an average low of 51°. 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.
