S
M
T
W
T
F
S
26
75°
52°
27
77°
61°
28
77°
65°
29
72°
59°
30
77°
60°
31
78°
61°
1
81°
60°
2
84°
59°
3
78°
61°
4
79°
63°
5
80°
64°
6
82°
60°
7
80°
64°
8
76°
63°
9
77°
64°
10
78°
62°
11
76°
61°
12
75°
59°
13
76°
62°
14
76°
63°
15
78°
63°
16
78°
62°
17
76°
63°
18
76°
62°
19
77°
61°
20
78°
62°
21
79°
61°
22
75°
59°
23
74°
59°
24
78°
61°
25
80°
62°
26
80°
61°
27
77°
60°
28
73°
59°
29
73°
57°
30
74°
60°
31
77°
60°
1
79°
59°
2
80°
60°
3
78°
59°
4
73°
56°
5
72°
54°
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 72° to 84°, with overnight lows between 52° and 65°. The average high for August is 77° 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.