S
M
T
W
T
F
S
26
73°
55°
27
77°
55°
28
80°
53°
29
77°
51°
30
76°
49°
31
77°
50°
1
75°
49°
2
73°
47°
3
72°
48°
4
73°
49°
5
78°
50°
6
78°
53°
7
77°
54°
8
79°
56°
9
80°
54°
10
76°
53°
11
79°
57°
12
80°
57°
13
80°
56°
14
77°
49°
15
77°
48°
16
72°
52°
17
73°
49°
18
69°
48°
19
69°
46°
20
70°
55°
21
73°
57°
22
77°
56°
23
80°
55°
24
79°
47°
25
76°
46°
26
68°
46°
27
68°
50°
28
69°
53°
29
72°
54°
30
76°
53°
31
73°
53°
1
75°
49°
2
74°
46°
3
74°
48°
4
73°
50°
5
74°
51°
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 68° to 80°, with overnight lows between 46° and 57°. The average high for August is 75° with an average low of 51°. 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.
