S
M
T
W
T
F
S
26
82°
61°
27
82°
66°
28
86°
68°
29
84°
66°
30
82°
66°
31
84°
64°
1
88°
66°
2
88°
73°
3
86°
75°
4
86°
72°
5
86°
73°
6
90°
77°
7
90°
75°
8
91°
73°
9
91°
73°
10
91°
70°
11
86°
71°
12
86°
73°
13
86°
73°
14
82°
73°
15
86°
72°
16
81°
72°
17
90°
73°
18
86°
73°
19
88°
68°
20
90°
68°
21
81°
66°
22
75°
70°
23
82°
66°
24
82°
61°
25
81°
61°
26
84°
63°
27
85°
69°
28
81°
66°
29
84°
66°
30
88°
70°
31
88°
72°
1
93°
74°
2
92°
71°
3
88°
70°
4
89°
68°
5
85°
68°
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 81° to 93°, with overnight lows between 66° and 74°. The average high for August is 87° with an average low of 69°. 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.