S
M
T
W
T
F
S
26
88°
53°
27
90°
63°
28
81°
63°
29
84°
64°
30
83°
65°
31
88°
61°
1
89°
62°
2
88°
70°
3
87°
62°
4
85°
57°
5
86°
62°
6
91°
73°
7
92°
69°
8
90°
69°
9
92°
66°
10
93°
70°
11
90°
68°
12
85°
67°
13
85°
64°
14
86°
59°
15
83°
60°
16
84°
61°
17
82°
59°
18
82°
59°
19
79°
60°
20
79°
57°
21
78°
60°
22
82°
62°
23
86°
64°
24
78°
58°
25
82°
59°
26
84°
61°
27
86°
63°
28
86°
61°
29
84°
57°
30
77°
55°
31
77°
55°
1
78°
59°
2
78°
58°
3
79°
58°
4
78°
61°
5
79°
61°
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 77° to 93°, with overnight lows between 55° and 70°. The average high for August is 83° 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.