S
M
T
W
T
F
S
26
91°
73°
27
92°
72°
28
94°
75°
29
92°
74°
30
88°
69°
31
89°
65°
1
90°
69°
2
80°
65°
3
83°
67°
4
87°
67°
5
89°
71°
6
93°
71°
7
91°
72°
8
88°
70°
9
91°
68°
10
91°
68°
11
91°
72°
12
92°
73°
13
94°
73°
14
95°
74°
15
95°
72°
16
97°
71°
17
97°
74°
18
91°
71°
19
95°
69°
20
96°
73°
21
91°
70°
22
94°
66°
23
89°
67°
24
92°
67°
25
91°
70°
26
90°
71°
27
89°
70°
28
91°
69°
29
92°
68°
30
92°
69°
31
94°
68°
1
94°
65°
2
90°
64°
3
89°
65°
4
90°
64°
5
91°
67°
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 89° to 94°, with overnight lows between 64° and 71°. The average high for August is 91° with an average low of 67°. 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.