S
M
T
W
T
F
S
26
91°
72°
27
91°
72°
28
92°
71°
29
91°
71°
30
91°
70°
31
90°
71°
1
91°
73°
2
92°
71°
3
91°
71°
4
92°
72°
5
89°
70°
6
90°
70°
7
89°
69°
8
89°
69°
9
88°
67°
10
84°
69°
11
87°
71°
12
90°
69°
13
91°
68°
14
88°
70°
15
91°
68°
16
91°
63°
17
87°
59°
18
80°
57°
19
78°
57°
20
79°
58°
21
79°
58°
22
80°
59°
23
79°
61°
24
79°
62°
25
83°
65°
26
87°
58°
27
79°
56°
28
79°
57°
29
81°
64°
30
82°
65°
31
85°
58°
1
86°
55°
2
77°
58°
3
78°
63°
4
84°
62°
5
85°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Mercer
Mercer's August 2026 forecast shows daily high temperatures ranging from 77° to 92°, with overnight lows between 54° and 73°. The average high for August is 86° with an average low of 65°. 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 Mercer. See also: September | October | November.
