S
M
T
W
T
F
S
30
85°
65°
31
86°
64°
1
88°
65°
2
88°
67°
3
90°
67°
4
89°
66°
5
85°
67°
6
84°
62°
7
87°
61°
8
86°
62°
9
88°
65°
10
89°
66°
11
89°
65°
12
88°
64°
13
88°
63°
14
87°
64°
15
88°
63°
16
82°
64°
17
86°
64°
18
87°
63°
19
Hist. Avg.
84°
60°
20
Hist. Avg.
84°
60°
21
Hist. Avg.
83°
59°
22
Hist. Avg.
83°
59°
23
Hist. Avg.
83°
58°
24
Hist. Avg.
82°
58°
25
Hist. Avg.
82°
58°
26
Hist. Avg.
82°
57°
27
Hist. Avg.
81°
57°
28
Hist. Avg.
81°
57°
29
Hist. Avg.
81°
56°
30
Hist. Avg.
80°
56°
1
Hist. Avg.
80°
56°
2
Hist. Avg.
80°
55°
3
Hist. Avg.
79°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Stemley
Stemley's September 2026 forecast shows daily high temperatures ranging from 82° to 90°, with overnight lows between 61° and 67°. The average high for September is 87° 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 Stemley. See also: October | November | December.