S
M
T
W
T
F
S
31
78°
39°
1
80°
42°
2
79°
43°
3
79°
47°
4
80°
57°
5
79°
59°
6
76°
56°
7
82°
58°
8
78°
63°
9
82°
62°
10
78°
61°
11
71°
55°
12
71°
53°
13
68°
53°
14
65°
39°
15
73°
36°
16
67°
43°
17
57°
42°
18
68°
47°
19
67°
40°
20
69°
44°
21
70°
41°
22
70°
38°
23
73°
41°
24
69°
54°
25
72°
48°
26
75°
48°
27
78°
57°
28
79°
67°
29
91°
69°
30
90°
66°
1
87°
67°
2
85°
66°
3
85°
65°
4
84°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Mercer
Mercer's June 2026 forecast shows daily high temperatures ranging from 75° to 91°, with overnight lows between 48° and 69°. The average high for June is 84° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Mercer. See also: July | August | September.