S
M
T
W
T
F
S
28
74°
55°
29
75°
54°
30
74°
55°
1
74°
54°
2
75°
55°
3
81°
61°
4
82°
60°
5
83°
63°
6
83°
62°
7
82°
57°
8
76°
56°
9
76°
57°
10
77°
61°
11
82°
62°
12
79°
60°
13
77°
59°
14
77°
63°
15
82°
63°
16
81°
61°
17
79°
57°
18
78°
59°
19
80°
60°
20
83°
61°
21
84°
62°
22
83°
57°
23
82°
57°
24
82°
58°
25
83°
56°
26
81°
57°
27
78°
55°
28
76°
55°
29
78°
56°
30
77°
56°
31
77°
54°
1
78°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Peterborough
Peterborough's July 2026 forecast shows daily high temperatures ranging from 74° to 84°, with overnight lows between 54° and 63°. The average high for July is 79° 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 Peterborough. See also: August | September | October.