S
M
T
W
T
F
S
26
104°
68°
27
98°
67°
28
101°
66°
29
100°
62°
30
89°
60°
31
89°
59°
1
102°
61°
2
98°
64°
3
82°
44°
4
77°
43°
5
87°
47°
6
99°
54°
7
90°
58°
8
95°
58°
9
92°
60°
10
86°
63°
11
89°
63°
12
83°
58°
13
82°
56°
14
78°
57°
15
80°
60°
16
81°
57°
17
79°
58°
18
84°
57°
19
79°
47°
20
88°
63°
21
89°
62°
22
86°
61°
23
87°
61°
24
88°
59°
25
77°
57°
26
77°
57°
27
83°
59°
28
88°
61°
29
90°
61°
30
89°
60°
31
87°
60°
1
86°
59°
2
88°
59°
3
83°
58°
4
76°
57°
5
85°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Buffalo
Buffalo's August 2026 forecast shows daily high temperatures ranging from 76° to 99°, with overnight lows between 47° and 63°. The average high for August is 85° with an average low of 59°. 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 Buffalo. See also: September | October | November.