S
M
T
W
T
F
S
28
99°
56°
29
97°
66°
30
97°
64°
1
96°
62°
2
97°
59°
3
99°
61°
4
89°
64°
5
90°
59°
6
93°
61°
7
95°
63°
8
93°
60°
9
88°
59°
10
85°
57°
11
90°
60°
12
84°
60°
13
87°
60°
14
87°
60°
15
86°
62°
16
88°
61°
17
87°
61°
18
88°
62°
19
87°
63°
20
86°
62°
21
86°
58°
22
89°
62°
23
85°
62°
24
87°
61°
25
84°
62°
26
81°
61°
27
86°
61°
28
88°
62°
29
86°
61°
30
88°
62°
31
88°
62°
1
87°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Grenville
Grenville's July 2026 forecast shows daily high temperatures ranging from 81° to 93°, with overnight lows between 57° and 63°. The average high for July is 87° 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 Grenville. See also: August | September | October.