S
M
T
W
T
F
S
26
79°
60°
27
84°
62°
28
83°
67°
29
79°
60°
30
83°
55°
31
83°
58°
1
76°
66°
2
82°
68°
3
81°
63°
4
85°
56°
5
85°
66°
6
85°
70°
7
86°
68°
8
87°
66°
9
86°
64°
10
78°
68°
11
72°
66°
12
75°
65°
13
84°
61°
14
76°
67°
15
82°
67°
16
86°
71°
17
82°
70°
18
81°
64°
19
78°
66°
20
79°
62°
21
85°
64°
22
80°
60°
23
77°
54°
24
76°
53°
25
77°
56°
26
79°
57°
27
80°
59°
28
78°
58°
29
79°
60°
30
79°
59°
31
78°
60°
1
79°
58°
2
82°
62°
3
76°
59°
4
77°
62°
5
76°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cambridge
Cambridge's August 2026 forecast shows daily high temperatures ranging from 76° to 85°, with overnight lows between 53° and 66°. The average high for August is 79° 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 August weather will actually feel in Cambridge. See also: September | October | November.