S
M
T
W
T
F
S
28
90°
75°
29
89°
72°
30
88°
73°
1
89°
72°
2
90°
73°
3
90°
73°
4
89°
74°
5
89°
73°
6
91°
73°
7
92°
74°
8
91°
73°
9
90°
72°
10
91°
72°
11
89°
73°
12
90°
74°
13
88°
73°
14
89°
74°
15
89°
73°
16
91°
73°
17
91°
74°
18
90°
73°
19
91°
73°
20
92°
74°
21
91°
74°
22
90°
73°
23
90°
73°
24
91°
74°
25
92°
74°
26
92°
75°
27
90°
74°
28
90°
74°
29
91°
73°
30
89°
75°
31
90°
74°
1
91°
75°
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 88° to 92°, with overnight lows between 72° and 75°. The average high for July is 90° 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 July weather will actually feel in Frontenac. See also: August | September | October.