S
M
T
W
T
F
S
26
86°
65°
27
82°
60°
28
79°
53°
29
85°
51°
30
89°
65°
31
74°
59°
1
77°
51°
2
78°
51°
3
83°
58°
4
78°
52°
5
73°
49°
6
76°
57°
7
77°
56°
8
77°
56°
9
75°
55°
10
76°
54°
11
75°
58°
12
77°
53°
13
71°
54°
14
70°
49°
15
70°
53°
16
74°
56°
17
71°
55°
18
71°
53°
19
72°
54°
20
78°
54°
21
69°
48°
22
68°
47°
23
68°
46°
24
69°
47°
25
67°
46°
26
68°
52°
27
76°
54°
28
76°
55°
29
75°
54°
30
76°
55°
31
76°
55°
1
75°
52°
2
67°
47°
3
65°
49°
4
73°
54°
5
76°
55°
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 65° to 89°, with overnight lows between 46° and 65°. The average high for August is 74° with an average low of 53°. 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.
