S
M
T
W
T
F
S
28
86°
59°
29
86°
59°
30
84°
64°
1
90°
73°
2
93°
71°
3
89°
71°
4
86°
68°
5
86°
59°
6
86°
63°
7
86°
64°
8
90°
64°
9
79°
65°
10
83°
63°
11
82°
58°
12
84°
57°
13
81°
69°
14
93°
67°
15
86°
61°
16
79°
55°
17
78°
55°
18
82°
58°
19
83°
58°
20
79°
61°
21
78°
60°
22
78°
63°
23
83°
64°
24
81°
62°
25
82°
63°
26
83°
58°
27
76°
59°
28
76°
61°
29
75°
60°
30
75°
59°
31
79°
61°
1
77°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Saint-Denis-sur-Richelieu
Saint-Denis-sur-Richelieu's July 2026 forecast shows daily high temperatures ranging from 75° to 93°, with overnight lows between 55° and 69°. The average high for July is 80° 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 Saint-Denis-sur-Richelieu. See also: August | September | October.