S
M
T
W
T
F
S
31
N/A
1
80°
47°
2
80°
49°
3
80°
59°
4
71°
59°
5
77°
58°
6
76°
59°
7
79°
59°
8
77°
53°
9
76°
56°
10
75°
50°
11
73°
51°
12
73°
52°
13
72°
49°
14
72°
48°
15
66°
45°
16
66°
45°
17
68°
53°
18
75°
54°
19
76°
55°
20
77°
56°
21
75°
56°
22
74°
55°
23
74°
53°
24
68°
50°
25
69°
54°
26
74°
55°
27
70°
51°
28
69°
50°
29
69°
48°
30
71°
54°
1
74°
58°
2
78°
58°
3
76°
51°
4
70°
49°
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 66° to 80°, with overnight lows between 45° and 59°. The average high for June is 74° with an average low of 53°. 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.