S
M
T
W
T
F
S
26
84°
59°
27
81°
56°
28
77°
58°
29
76°
59°
30
78°
59°
31
79°
58°
1
77°
59°
2
78°
59°
3
79°
58°
4
77°
59°
5
76°
59°
6
77°
58°
7
76°
59°
8
74°
59°
9
75°
58°
10
75°
58°
11
78°
57°
12
75°
56°
13
75°
58°
14
76°
59°
15
75°
59°
16
78°
58°
17
76°
58°
18
77°
57°
19
77°
58°
20
74°
58°
21
77°
57°
22
75°
56°
23
76°
57°
24
78°
56°
25
78°
52°
26
77°
50°
27
80°
48°
28
72°
47°
29
71°
48°
30
71°
48°
31
69°
46°
1
71°
46°
2
71°
48°
3
72°
51°
4
73°
51°
5
70°
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 69° to 84°, with overnight lows between 46° and 59°. The average high for August is 76° 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.