S
M
T
W
T
F
S
28
81°
61°
29
79°
50°
30
84°
55°
1
75°
57°
2
79°
54°
3
N/A
4
85°
58°
5
88°
57°
6
95°
59°
7
91°
60°
8
91°
62°
9
94°
65°
10
94°
66°
11
92°
65°
12
93°
67°
13
91°
65°
14
90°
66°
15
88°
63°
16
89°
64°
17
77°
59°
18
77°
58°
19
76°
57°
20
77°
59°
21
77°
58°
22
75°
58°
23
71°
57°
24
74°
59°
25
74°
59°
26
76°
58°
27
71°
58°
28
74°
57°
29
76°
58°
30
73°
56°
31
72°
55°
1
71°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
July Weather in Rennes
Rennes's July 2026 forecast shows daily high temperatures ranging from 71° to 95°, with overnight lows between 55° and 67°. The average high for July is 82° with an average low of 60°. 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 Rennes. See also: August | September | October.