S
M
T
W
T
F
S
31
78°
56°
1
73°
50°
2
76°
57°
3
80°
59°
4
78°
56°
5
70°
53°
6
69°
55°
7
71°
56°
8
72°
58°
9
75°
60°
10
81°
59°
11
77°
55°
12
73°
53°
13
73°
51°
14
74°
55°
15
74°
53°
16
75°
61°
17
77°
61°
18
76°
59°
19
81°
60°
20
80°
61°
21
78°
57°
22
79°
59°
23
81°
54°
24
79°
56°
25
80°
55°
26
81°
63°
27
83°
65°
28
80°
57°
29
89°
56°
30
83°
56°
1
82°
60°
2
82°
65°
3
85°
62°
4
87°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Frontenac
Frontenac's June 2026 forecast shows daily high temperatures ranging from 69° to 89°, with overnight lows between 50° and 65°. The average high for June is 78° 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 June weather will actually feel in Frontenac. See also: July | August | September.
