S
M
T
W
T
F
S
26
77°
57°
27
78°
56°
28
78°
59°
29
79°
57°
30
80°
58°
31
80°
63°
1
83°
63°
2
84°
62°
3
84°
64°
4
83°
62°
5
84°
56°
6
77°
56°
7
75°
57°
8
76°
57°
9
77°
58°
10
79°
57°
11
81°
62°
12
82°
58°
13
81°
61°
14
82°
62°
15
81°
62°
16
81°
60°
17
83°
58°
18
78°
55°
19
75°
54°
20
76°
56°
21
76°
58°
22
77°
60°
23
75°
58°
24
76°
58°
25
78°
61°
26
80°
59°
27
80°
54°
28
78°
57°
29
76°
58°
30
75°
59°
31
80°
61°
1
81°
59°
2
81°
58°
3
80°
53°
4
79°
51°
5
78°
58°
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 75° to 84°, with overnight lows between 51° and 64°. The average high for August is 79° with an average low of 58°. 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.