S
M
T
W
T
F
S
26
79°
59°
27
80°
58°
28
82°
61°
29
86°
64°
30
82°
61°
31
79°
58°
1
80°
58°
2
83°
59°
3
86°
64°
4
86°
58°
5
83°
56°
6
79°
58°
7
80°
64°
8
83°
64°
9
80°
60°
10
85°
64°
11
86°
64°
12
84°
59°
13
84°
58°
14
78°
57°
15
77°
57°
16
79°
58°
17
81°
57°
18
84°
63°
19
79°
63°
20
80°
62°
21
79°
56°
22
77°
57°
23
78°
60°
24
76°
62°
25
78°
56°
26
78°
56°
27
79°
55°
28
77°
54°
29
77°
54°
30
78°
55°
31
78°
59°
1
79°
59°
2
77°
60°
3
78°
59°
4
79°
60°
5
77°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Monaca
Monaca's August 2026 forecast shows daily high temperatures ranging from 76° to 86°, with overnight lows between 54° and 64°. The average high for August is 80° with an average low of 59°. 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 Monaca. See also: September | October | November.