S
M
T
W
T
F
S
26
93°
73°
27
93°
72°
28
92°
72°
29
90°
71°
30
90°
70°
31
87°
69°
1
88°
69°
2
89°
70°
3
90°
69°
4
89°
68°
5
88°
69°
6
89°
70°
7
88°
70°
8
82°
69°
9
82°
68°
10
83°
66°
11
84°
67°
12
86°
69°
13
87°
69°
14
89°
68°
15
88°
69°
16
89°
68°
17
85°
68°
18
89°
67°
19
88°
68°
20
89°
68°
21
79°
56°
22
79°
59°
23
81°
57°
24
80°
59°
25
81°
65°
26
88°
67°
27
88°
66°
28
89°
66°
29
90°
60°
30
87°
59°
31
80°
63°
1
81°
60°
2
87°
65°
3
88°
66°
4
89°
62°
5
88°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Monroe City
Monroe City's August 2026 forecast shows daily high temperatures ranging from 79° to 93°, with overnight lows between 56° and 73°. The average high for August is 87° with an average low of 66°. 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 Monroe City. See also: September | October | November.