S
M
T
W
T
F
S
26
84°
62°
27
83°
61°
28
82°
62°
29
80°
60°
30
77°
59°
31
74°
55°
1
73°
53°
2
73°
53°
3
74°
55°
4
74°
57°
5
75°
56°
6
75°
58°
7
73°
59°
8
76°
58°
9
76°
59°
10
77°
53°
11
75°
51°
12
78°
57°
13
75°
59°
14
81°
58°
15
83°
57°
16
75°
58°
17
74°
58°
18
81°
57°
19
78°
56°
20
78°
50°
21
73°
50°
22
74°
49°
23
76°
49°
24
76°
54°
25
79°
54°
26
80°
52°
27
81°
51°
28
79°
48°
29
76°
50°
30
77°
54°
31
80°
54°
1
79°
45°
2
75°
46°
3
70°
51°
4
73°
53°
5
74°
54°
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 70° to 84°, with overnight lows between 45° and 62°. The average high for August is 77° with an average low of 55°. 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.