S
M
T
W
T
F
S
26
101°
79°
27
101°
80°
28
88°
78°
29
99°
75°
30
92°
77°
31
97°
73°
1
79°
67°
2
88°
64°
3
91°
66°
4
96°
71°
5
95°
77°
6
98°
77°
7
89°
74°
8
96°
69°
9
100°
76°
10
99°
78°
11
100°
80°
12
100°
79°
13
101°
79°
14
100°
78°
15
100°
78°
16
102°
72°
17
93°
69°
18
95°
72°
19
99°
71°
20
97°
69°
21
99°
71°
22
100°
71°
23
95°
70°
24
92°
66°
25
89°
64°
26
93°
70°
27
94°
70°
28
88°
66°
29
91°
68°
30
92°
68°
31
92°
69°
1
93°
69°
2
93°
68°
3
92°
69°
4
92°
68°
5
91°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Duquesne
Duquesne's August 2026 forecast shows daily high temperatures ranging from 88° to 102°, with overnight lows between 64° and 79°. The average high for August is 95° with an average low of 70°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Duquesne. See also: September | October | November.