S
M
T
W
T
F
S
28
75°
51°
29
82°
65°
30
89°
71°
1
84°
57°
2
83°
62°
3
84°
58°
4
80°
59°
5
80°
58°
6
84°
62°
7
85°
62°
8
74°
57°
9
75°
54°
10
76°
59°
11
76°
58°
12
74°
56°
13
80°
56°
14
81°
60°
15
81°
58°
16
76°
56°
17
77°
55°
18
72°
58°
19
72°
58°
20
72°
51°
21
73°
53°
22
76°
58°
23
76°
58°
24
74°
57°
25
77°
58°
26
75°
52°
27
75°
58°
28
79°
59°
29
79°
59°
30
78°
58°
31
79°
59°
1
80°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Mercer
Mercer's July 2026 forecast shows daily high temperatures ranging from 72° to 85°, with overnight lows between 51° and 62°. The average high for July is 77° 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 July weather will actually feel in Mercer. See also: August | September | October.