S
M
T
W
T
F
S
28
80°
60°
29
74°
56°
30
74°
58°
1
75°
60°
2
78°
57°
3
75°
55°
4
77°
61°
5
76°
62°
6
76°
62°
7
77°
61°
8
77°
62°
9
78°
62°
10
79°
61°
11
80°
63°
12
77°
63°
13
77°
62°
14
79°
63°
15
78°
59°
16
77°
57°
17
77°
57°
18
78°
56°
19
77°
60°
20
78°
56°
21
82°
60°
22
83°
62°
23
79°
63°
24
84°
57°
25
81°
55°
26
78°
56°
27
78°
55°
28
79°
57°
29
78°
56°
30
81°
58°
31
81°
62°
1
83°
62°
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 55° and 63°. The average high for July is 78° with an average low of 59°. 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.