S
M
T
W
T
F
S
26
81°
60°
27
84°
64°
28
76°
61°
29
73°
56°
30
77°
55°
31
80°
60°
1
79°
61°
2
80°
60°
3
78°
58°
4
76°
60°
5
80°
61°
6
78°
59°
7
80°
56°
8
80°
61°
9
79°
60°
10
80°
60°
11
78°
60°
12
80°
61°
13
80°
60°
14
76°
59°
15
76°
59°
16
78°
60°
17
80°
60°
18
80°
59°
19
75°
59°
20
78°
58°
21
75°
59°
22
75°
59°
23
79°
57°
24
79°
52°
25
70°
53°
26
73°
58°
27
78°
58°
28
78°
57°
29
77°
57°
30
74°
53°
31
69°
50°
1
68°
50°
2
68°
49°
3
69°
54°
4
71°
56°
5
76°
57°
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 68° to 84°, with overnight lows between 49° and 64°. The average high for August is 77° with an average low of 58°. 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.