S
M
T
W
T
F
S
26
91°
74°
27
93°
77°
28
97°
76°
29
95°
81°
30
94°
76°
31
94°
74°
1
87°
75°
2
94°
77°
3
87°
72°
4
90°
74°
5
94°
73°
6
93°
72°
7
91°
72°
8
94°
73°
9
92°
74°
10
92°
76°
11
96°
71°
12
93°
72°
13
97°
75°
14
92°
76°
15
97°
73°
16
96°
74°
17
99°
74°
18
96°
72°
19
96°
72°
20
96°
72°
21
90°
70°
22
90°
67°
23
89°
68°
24
92°
66°
25
93°
67°
26
89°
67°
27
89°
68°
28
90°
68°
29
89°
67°
30
89°
69°
31
85°
69°
1
84°
68°
2
83°
69°
3
84°
65°
4
83°
63°
5
83°
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 83° to 99°, with overnight lows between 62° and 74°. The average high for August is 90° with an average low of 68°. 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.