S
M
T
W
T
F
S
26
69°
57°
27
71°
51°
28
71°
51°
29
73°
52°
30
73°
55°
31
72°
55°
1
71°
57°
2
75°
56°
3
75°
56°
4
74°
54°
5
75°
55°
6
75°
54°
7
74°
56°
8
75°
53°
9
71°
52°
10
70°
51°
11
71°
52°
12
73°
52°
13
73°
54°
14
70°
52°
15
70°
53°
16
74°
55°
17
73°
56°
18
74°
56°
19
74°
54°
20
72°
55°
21
71°
55°
22
73°
52°
23
72°
53°
24
70°
54°
25
68°
54°
26
70°
53°
27
71°
50°
28
69°
54°
29
69°
54°
30
67°
55°
31
71°
55°
1
72°
54°
2
73°
54°
3
73°
53°
4
72°
53°
5
72°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Peterborough
Peterborough's August 2026 forecast shows daily high temperatures ranging from 67° to 75°, with overnight lows between 50° and 57°. The average high for August is 72° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Peterborough. See also: September | October | November.