S
M
T
W
T
F
S
31
91°
64°
1
90°
68°
2
87°
69°
3
85°
64°
4
84°
69°
5
84°
68°
6
80°
67°
7
81°
68°
8
88°
72°
9
90°
70°
10
91°
73°
11
90°
69°
12
86°
67°
13
84°
66°
14
85°
67°
15
83°
68°
16
92°
72°
17
88°
70°
18
89°
71°
19
89°
71°
20
88°
70°
21
86°
70°
22
84°
71°
23
90°
72°
24
90°
72°
25
91°
71°
26
91°
72°
27
90°
72°
28
90°
71°
29
89°
72°
30
90°
72°
1
86°
71°
2
89°
72°
3
88°
72°
4
86°
71°
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 80° to 92°, with overnight lows between 66° and 73°. The average high for June is 87° with an average low of 70°. 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.
