S
M
T
W
T
F
S
26
92°
67°
27
88°
66°
28
84°
66°
29
89°
67°
30
92°
67°
31
89°
66°
1
86°
67°
2
89°
65°
3
86°
62°
4
89°
65°
5
93°
59°
6
92°
64°
7
93°
59°
8
86°
57°
9
84°
64°
10
88°
60°
11
92°
57°
12
84°
56°
13
83°
56°
14
82°
58°
15
82°
57°
16
83°
55°
17
83°
55°
18
84°
56°
19
84°
60°
20
85°
63°
21
91°
63°
22
91°
62°
23
92°
62°
24
92°
57°
25
88°
53°
26
82°
52°
27
81°
53°
28
82°
54°
29
85°
53°
30
81°
57°
31
81°
59°
1
82°
59°
2
86°
60°
3
87°
52°
4
83°
50°
5
79°
49°
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 79° to 93°, with overnight lows between 49° and 67°. The average high for August is 86° with an average low of 59°. 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.