S
M
T
W
T
F
S
26
87°
73°
27
88°
70°
28
87°
69°
29
87°
72°
30
88°
75°
31
92°
74°
1
90°
69°
2
87°
69°
3
86°
70°
4
86°
68°
5
87°
68°
6
86°
67°
7
86°
68°
8
85°
69°
9
85°
72°
10
86°
74°
11
85°
73°
12
87°
71°
13
88°
73°
14
90°
67°
15
90°
67°
16
85°
71°
17
87°
72°
18
90°
68°
19
85°
67°
20
84°
66°
21
83°
71°
22
84°
67°
23
84°
72°
24
83°
72°
25
87°
71°
26
85°
72°
27
88°
73°
28
89°
72°
29
88°
72°
30
88°
65°
31
83°
65°
1
82°
66°
2
82°
65°
3
83°
70°
4
82°
64°
5
86°
65°
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 82° to 92°, with overnight lows between 64° and 75°. The average high for August is 86° with an average low of 70°. 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.