S
M
T
W
T
F
S
31
83°
72°
1
84°
73°
2
84°
74°
3
86°
73°
4
85°
74°
5
85°
74°
6
86°
73°
7
85°
74°
8
85°
74°
9
86°
73°
10
85°
75°
11
85°
75°
12
86°
74°
13
85°
75°
14
86°
75°
15
86°
74°
16
87°
75°
17
86°
75°
18
87°
74°
19
87°
73°
20
87°
71°
21
89°
71°
22
88°
73°
23
88°
72°
24
90°
73°
25
89°
72°
26
88°
72°
27
88°
71°
28
90°
75°
29
89°
72°
30
88°
73°
1
89°
72°
2
90°
73°
3
90°
73°
4
89°
74°
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 83° to 90°, with overnight lows between 71° and 75°. The average high for June is 87° with an average low of 73°. 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.
