S
M
T
W
T
F
S
28
83°
61°
29
85°
60°
30
84°
65°
1
90°
72°
2
90°
71°
3
88°
73°
4
81°
65°
5
83°
61°
6
87°
63°
7
85°
70°
8
87°
67°
9
74°
67°
10
82°
64°
11
81°
59°
12
83°
61°
13
83°
65°
14
87°
71°
15
82°
62°
16
77°
57°
17
78°
62°
18
71°
62°
19
78°
59°
20
78°
62°
21
73°
60°
22
75°
61°
23
80°
62°
24
81°
62°
25
79°
63°
26
79°
63°
27
78°
64°
28
77°
63°
29
76°
60°
30
74°
61°
31
76°
61°
1
73°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Châteauguay
Châteauguay's July 2026 forecast shows daily high temperatures ranging from 71° to 82°, with overnight lows between 57° and 64°. The average high for July is 77° with an average low of 61°. 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 Châteauguay. See also: August | September | October.
