S
M
T
W
T
F
S
30
86°
64°
31
89°
63°
1
84°
64°
2
84°
66°
3
85°
67°
4
84°
67°
5
87°
66°
6
88°
64°
7
87°
62°
8
83°
61°
9
82°
61°
10
83°
62°
11
86°
62°
12
86°
64°
13
84°
66°
14
83°
65°
15
Hist. Avg.
83°
63°
16
Hist. Avg.
83°
63°
17
Hist. Avg.
82°
62°
18
Hist. Avg.
82°
62°
19
Hist. Avg.
82°
62°
20
Hist. Avg.
82°
61°
21
Hist. Avg.
81°
61°
22
Hist. Avg.
81°
61°
23
Hist. Avg.
81°
60°
24
Hist. Avg.
80°
60°
25
Hist. Avg.
80°
60°
26
Hist. Avg.
80°
59°
27
Hist. Avg.
80°
59°
28
Hist. Avg.
79°
58°
29
Hist. Avg.
79°
58°
30
Hist. Avg.
79°
58°
1
Hist. Avg.
78°
57°
2
Hist. Avg.
78°
57°
3
Hist. Avg.
78°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Sterling
Sterling's September 2026 forecast shows daily high temperatures ranging from 82° to 89°, with overnight lows between 61° and 67°. The average high for September is 85° with an average low of 64°. 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.
