S
M
T
W
T
F
S
26
80°
57°
27
81°
56°
28
81°
68°
29
74°
68°
30
73°
65°
31
80°
62°
1
85°
65°
2
83°
70°
3
78°
68°
4
85°
61°
5
87°
64°
6
90°
73°
7
93°
74°
8
90°
71°
9
90°
70°
10
87°
66°
11
85°
71°
12
85°
66°
13
86°
67°
14
84°
64°
15
81°
63°
16
80°
60°
17
72°
66°
18
82°
68°
19
86°
69°
20
87°
65°
21
73°
64°
22
73°
65°
23
78°
66°
24
81°
56°
25
78°
59°
26
79°
62°
27
80°
66°
28
79°
64°
29
79°
62°
30
78°
61°
31
77°
62°
1
79°
61°
2
80°
59°
3
75°
62°
4
76°
64°
5
73°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cranston
Cranston's August 2026 forecast shows daily high temperatures ranging from 73° to 87°, with overnight lows between 56° and 66°. The average high for August is 78° with an average low of 62°. 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 Cranston. See also: September | October | November.