S
M
T
W
T
F
S
26
80°
57°
27
78°
61°
28
83°
62°
29
83°
62°
30
82°
61°
31
83°
62°
1
84°
61°
2
83°
62°
3
83°
61°
4
80°
59°
5
82°
61°
6
83°
60°
7
78°
55°
8
75°
55°
9
76°
56°
10
79°
60°
11
82°
61°
12
82°
61°
13
84°
60°
14
83°
60°
15
81°
59°
16
79°
58°
17
78°
59°
18
76°
59°
19
81°
58°
20
82°
59°
21
81°
55°
22
77°
49°
23
73°
49°
24
74°
50°
25
75°
49°
26
78°
49°
27
79°
51°
28
78°
56°
29
77°
55°
30
73°
56°
31
76°
55°
1
78°
54°
2
78°
47°
3
73°
46°
4
70°
53°
5
70°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Merrillan
Merrillan's August 2026 forecast shows daily high temperatures ranging from 70° to 84°, with overnight lows between 46° and 62°. The average high for August is 79° 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 Merrillan. See also: September | October | November.
