S
M
T
W
T
F
S
26
76°
59°
27
83°
62°
28
82°
66°
29
78°
59°
30
84°
57°
31
85°
60°
1
77°
66°
2
77°
66°
3
80°
63°
4
85°
55°
5
89°
66°
6
88°
63°
7
84°
68°
8
86°
66°
9
86°
62°
10
82°
66°
11
75°
64°
12
75°
64°
13
83°
64°
14
77°
66°
15
80°
65°
16
84°
71°
17
80°
68°
18
80°
63°
19
80°
66°
20
81°
59°
21
82°
62°
22
80°
57°
23
75°
52°
24
75°
55°
25
78°
56°
26
77°
57°
27
78°
56°
28
78°
58°
29
78°
57°
30
79°
58°
31
78°
57°
1
77°
56°
2
79°
59°
3
75°
56°
4
75°
59°
5
75°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Marengo
Marengo's August 2026 forecast shows daily high temperatures ranging from 75° to 82°, with overnight lows between 52° and 66°. The average high for August is 78° with an average low of 57°. 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 Marengo. See also: September | October | November.
