S
M
T
W
T
F
S
28
91°
65°
29
85°
71°
30
84°
71°
1
91°
70°
2
91°
72°
3
92°
67°
4
92°
64°
5
84°
64°
6
84°
69°
7
86°
70°
8
86°
71°
9
90°
70°
10
86°
69°
11
85°
70°
12
87°
71°
13
87°
72°
14
92°
70°
15
91°
71°
16
92°
72°
17
91°
71°
18
93°
73°
19
93°
73°
20
90°
74°
21
94°
74°
22
94°
73°
23
93°
74°
24
94°
69°
25
95°
66°
26
86°
66°
27
86°
67°
28
85°
67°
29
86°
68°
30
86°
67°
31
85°
69°
1
88°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Frontenac
Frontenac's July 2026 forecast shows daily high temperatures ranging from 84° to 95°, with overnight lows between 64° and 74°. The average high for July is 89° 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 July weather will actually feel in Frontenac. See also: August | September | October.