S
M
T
W
T
F
S
26
83°
63°
27
83°
64°
28
85°
64°
29
85°
65°
30
84°
64°
31
83°
64°
1
83°
63°
2
82°
64°
3
83°
64°
4
82°
63°
5
83°
62°
6
80°
62°
7
81°
64°
8
83°
58°
9
77°
56°
10
76°
57°
11
77°
62°
12
77°
61°
13
78°
62°
14
77°
63°
15
77°
63°
16
81°
61°
17
79°
56°
18
77°
54°
19
77°
58°
20
78°
59°
21
76°
60°
22
82°
58°
23
82°
58°
24
78°
55°
25
75°
53°
26
76°
54°
27
75°
54°
28
74°
53°
29
76°
54°
30
76°
59°
31
81°
60°
1
81°
60°
2
80°
59°
3
81°
53°
4
80°
50°
5
73°
52°
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 73° to 85°, with overnight lows between 50° and 65°. 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.