S
M
T
W
T
F
S
26
83°
59°
27
87°
61°
28
83°
61°
29
82°
59°
30
87°
56°
31
89°
53°
1
81°
66°
2
71°
64°
3
82°
57°
4
84°
54°
5
84°
55°
6
86°
62°
7
81°
68°
8
87°
66°
9
84°
60°
10
85°
64°
11
80°
62°
12
81°
62°
13
82°
62°
14
77°
58°
15
73°
62°
16
75°
63°
17
75°
59°
18
77°
61°
19
76°
62°
20
77°
61°
21
75°
63°
22
74°
62°
23
76°
61°
24
76°
59°
25
75°
62°
26
80°
64°
27
78°
63°
28
78°
60°
29
72°
57°
30
71°
56°
31
71°
56°
1
72°
60°
2
74°
62°
3
75°
62°
4
76°
61°
5
77°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Hamilton
Hamilton's August 2026 forecast shows daily high temperatures ranging from 71° to 82°, with overnight lows between 56° and 64°. The average high for August is 76° 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 Hamilton. See also: September | October | November.