S
M
T
W
T
F
S
26
80°
61°
27
80°
62°
28
81°
61°
29
81°
64°
30
84°
67°
31
86°
67°
1
88°
66°
2
87°
67°
3
85°
67°
4
87°
61°
5
81°
59°
6
79°
58°
7
78°
58°
8
78°
59°
9
79°
59°
10
79°
60°
11
80°
62°
12
85°
65°
13
86°
66°
14
85°
65°
15
87°
63°
16
86°
59°
17
79°
58°
18
79°
57°
19
80°
60°
20
79°
59°
21
79°
61°
22
78°
58°
23
82°
64°
24
84°
65°
25
85°
59°
26
85°
63°
27
81°
65°
28
84°
64°
29
84°
63°
30
85°
64°
31
84°
61°
1
82°
62°
2
83°
60°
3
81°
59°
4
80°
61°
5
83°
60°
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 78° to 88°, with overnight lows between 57° and 67°. The average high for August is 82° with an average low of 62°. 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.