S
M
T
W
T
F
S
26
81°
64°
27
82°
66°
28
81°
62°
29
81°
66°
30
83°
67°
31
86°
66°
1
85°
60°
2
83°
60°
3
81°
61°
4
80°
61°
5
79°
60°
6
80°
60°
7
81°
59°
8
80°
62°
9
80°
66°
10
81°
66°
11
80°
65°
12
80°
66°
13
82°
66°
14
85°
61°
15
85°
60°
16
80°
63°
17
81°
60°
18
80°
59°
19
79°
58°
20
78°
57°
21
79°
61°
22
78°
59°
23
77°
60°
24
79°
64°
25
77°
61°
26
82°
64°
27
82°
64°
28
81°
63°
29
83°
63°
30
82°
57°
31
77°
56°
1
76°
56°
2
76°
57°
3
75°
61°
4
75°
56°
5
79°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cromwell
Cromwell's August 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 54° and 67°. The average high for August is 80° with an average low of 61°. 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 Cromwell. See also: September | October | November.