S
M
T
W
T
F
S
28
81°
59°
29
79°
55°
30
73°
56°
1
75°
57°
2
74°
55°
3
76°
57°
4
75°
54°
5
72°
55°
6
73°
56°
7
72°
56°
8
72°
55°
9
68°
54°
10
69°
55°
11
71°
56°
12
73°
56°
13
73°
55°
14
70°
56°
15
74°
57°
16
75°
57°
17
74°
56°
18
73°
57°
19
74°
56°
20
73°
56°
21
72°
55°
22
75°
56°
23
72°
54°
24
69°
56°
25
72°
56°
26
75°
55°
27
74°
57°
28
75°
57°
29
73°
54°
30
74°
57°
31
75°
57°
1
76°
56°
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 68° to 81°, with overnight lows between 54° and 59°. The average high for July is 73° with an average low of 56°. 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.