S
M
T
W
T
F
S
30
86°
71°
31
86°
66°
1
84°
65°
2
79°
64°
3
80°
67°
4
81°
67°
5
81°
66°
6
78°
65°
7
78°
64°
8
79°
65°
9
79°
64°
10
77°
63°
11
78°
64°
12
80°
64°
13
81°
63°
14
78°
62°
15
79°
63°
16
78°
62°
17
79°
62°
18
76°
61°
19
77°
67°
20
80°
66°
21
Hist. Avg.
78°
60°
22
Hist. Avg.
78°
60°
23
Hist. Avg.
78°
60°
24
Hist. Avg.
78°
59°
25
Hist. Avg.
77°
59°
26
Hist. Avg.
77°
58°
27
Hist. Avg.
76°
58°
28
Hist. Avg.
76°
58°
29
Hist. Avg.
76°
57°
30
Hist. Avg.
75°
57°
1
Hist. Avg.
75°
56°
2
Hist. Avg.
75°
56°
3
Hist. Avg.
74°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Shadyside
Shadyside's September 2026 forecast shows daily high temperatures ranging from 76° to 86°, with overnight lows between 61° and 71°. The average high for September is 80° with an average low of 65°. 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 Shadyside. See also: October | November | December.