S
M
T
W
T
F
S
26
79°
54°
27
79°
55°
28
80°
56°
29
80°
55°
30
84°
57°
31
85°
61°
1
86°
61°
2
86°
60°
3
87°
61°
4
87°
60°
5
86°
54°
6
78°
54°
7
77°
53°
8
78°
53°
9
80°
54°
10
82°
54°
11
84°
59°
12
83°
58°
13
84°
59°
14
83°
60°
15
83°
60°
16
85°
56°
17
84°
58°
18
80°
53°
19
76°
52°
20
78°
52°
21
78°
58°
22
77°
58°
23
76°
56°
24
77°
54°
25
82°
58°
26
82°
54°
27
81°
49°
28
79°
55°
29
76°
57°
30
80°
56°
31
82°
57°
1
81°
56°
2
81°
55°
3
82°
52°
4
80°
48°
5
80°
55°
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 87°, with overnight lows between 48° and 61°. The average high for August is 81° with an average low of 56°. 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.