S
M
T
W
T
F
S
26
82°
54°
27
84°
64°
28
81°
67°
29
84°
70°
30
76°
68°
31
88°
71°
1
85°
72°
2
84°
73°
3
82°
70°
4
81°
65°
5
81°
68°
6
94°
79°
7
94°
75°
8
93°
74°
9
94°
73°
10
92°
70°
11
89°
71°
12
89°
71°
13
88°
72°
14
84°
70°
15
82°
67°
16
81°
65°
17
85°
70°
18
82°
75°
19
88°
72°
20
82°
67°
21
80°
64°
22
73°
68°
23
83°
66°
24
84°
62°
25
80°
60°
26
83°
62°
27
81°
70°
28
82°
69°
29
80°
60°
30
83°
68°
31
79°
69°
1
90°
72°
2
82°
73°
3
89°
72°
4
82°
65°
5
77°
62°
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 90°, with overnight lows between 62° and 73°. The average high for August is 83° with an average low of 69°. 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.