S
M
T
W
T
F
S
31
76°
68°
1
76°
65°
2
83°
62°
3
85°
60°
4
82°
61°
5
67°
56°
6
75°
52°
7
80°
51°
8
78°
58°
9
80°
58°
10
85°
64°
11
91°
63°
12
93°
68°
13
93°
68°
14
92°
69°
15
93°
65°
16
94°
64°
17
93°
64°
18
91°
65°
19
88°
61°
20
76°
66°
21
78°
65°
22
85°
61°
23
76°
66°
24
69°
60°
25
81°
57°
26
82°
56°
27
84°
56°
28
86°
60°
29
85°
57°
30
84°
58°
1
86°
58°
2
87°
61°
3
87°
67°
4
84°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Duquesne
Duquesne's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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 Duquesne. See also: October | November | December.
