S
M
T
W
T
F
S
28
91°
75°
29
93°
73°
30
94°
69°
1
95°
72°
2
94°
70°
3
94°
70°
4
92°
69°
5
90°
70°
6
87°
70°
7
87°
70°
8
85°
69°
9
92°
71°
10
84°
71°
11
92°
73°
12
84°
70°
13
86°
71°
14
82°
70°
15
85°
72°
16
87°
72°
17
92°
71°
18
95°
72°
19
95°
71°
20
94°
70°
21
90°
72°
22
89°
70°
23
91°
68°
24
91°
70°
25
90°
69°
26
93°
72°
27
92°
74°
28
93°
73°
29
91°
72°
30
92°
73°
31
93°
73°
1
93°
72°
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 82° to 95°, with overnight lows between 68° and 74°. The average high for July is 90° with an average low of 71°. 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.