S
M
T
W
T
F
S
28
97°
75°
29
97°
73°
30
97°
75°
1
91°
71°
2
93°
68°
3
95°
73°
4
97°
75°
5
91°
75°
6
90°
77°
7
93°
75°
8
95°
75°
9
93°
73°
10
98°
73°
11
96°
75°
12
93°
75°
13
88°
74°
14
89°
73°
15
91°
75°
16
95°
76°
17
94°
77°
18
96°
75°
19
93°
75°
20
94°
77°
21
92°
76°
22
93°
77°
23
95°
74°
24
95°
77°
25
95°
77°
26
92°
76°
27
91°
75°
28
91°
75°
29
93°
76°
30
91°
77°
31
91°
76°
1
90°
76°
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 88° to 98°, with overnight lows between 73° and 77°. The average high for July is 93° with an average low of 76°. 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.