S
M
T
W
T
F
S
26
74°
49°
27
77°
58°
28
77°
62°
29
72°
63°
30
71°
60°
31
78°
61°
1
81°
60°
2
80°
63°
3
78°
61°
4
79°
61°
5
80°
63°
6
81°
64°
7
82°
60°
8
76°
63°
9
77°
64°
10
77°
63°
11
81°
63°
12
78°
64°
13
78°
64°
14
79°
63°
15
78°
62°
16
76°
62°
17
75°
61°
18
75°
62°
19
77°
62°
20
76°
61°
21
75°
61°
22
76°
62°
23
75°
61°
24
79°
54°
25
73°
55°
26
73°
60°
27
75°
62°
28
80°
61°
29
79°
61°
30
78°
57°
31
73°
53°
1
71°
55°
2
71°
53°
3
72°
52°
4
71°
54°
5
72°
59°
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 49° and 64°. The average high for August is 76° with an average low of 60°. 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.