S
M
T
W
T
F
S
28
77°
61°
29
80°
56°
30
72°
53°
1
73°
52°
2
74°
56°
3
74°
57°
4
75°
54°
5
74°
54°
6
75°
59°
7
75°
61°
8
81°
60°
9
75°
57°
10
75°
55°
11
77°
61°
12
82°
59°
13
75°
55°
14
76°
57°
15
76°
61°
16
81°
61°
17
77°
57°
18
74°
56°
19
74°
58°
20
75°
62°
21
76°
61°
22
76°
61°
23
77°
58°
24
76°
58°
25
78°
60°
26
81°
60°
27
83°
60°
28
80°
60°
29
76°
59°
30
82°
61°
31
76°
58°
1
80°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Saint-Hyacinthe
Saint-Hyacinthe's July 2026 forecast shows daily high temperatures ranging from 72° to 83°, with overnight lows between 52° and 62°. The average high for July is 77° with an average low of 58°. 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-Hyacinthe. See also: August | September | October.