S
M
T
W
T
F
S
26
98°
68°
27
94°
72°
28
88°
65°
29
93°
66°
30
91°
69°
31
75°
65°
1
84°
57°
2
82°
62°
3
86°
64°
4
78°
53°
5
77°
57°
6
83°
62°
7
85°
61°
8
84°
63°
9
83°
60°
10
82°
59°
11
81°
60°
12
80°
60°
13
81°
61°
14
80°
57°
15
76°
63°
16
83°
63°
17
83°
64°
18
85°
63°
19
83°
62°
20
83°
63°
21
82°
65°
22
85°
64°
23
84°
63°
24
83°
63°
25
81°
62°
26
75°
61°
27
73°
61°
28
78°
60°
29
82°
61°
30
83°
63°
31
83°
62°
1
82°
61°
2
82°
62°
3
83°
63°
4
84°
63°
5
83°
62°
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 86°, with overnight lows between 53° and 65°. The average high for August is 82° with an average low of 61°. 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.