S
M
T
W
T
F
S
26
79°
63°
27
82°
64°
28
80°
67°
29
79°
64°
30
80°
60°
31
85°
59°
1
87°
66°
2
74°
64°
3
79°
61°
4
80°
57°
5
87°
60°
6
84°
71°
7
80°
70°
8
82°
67°
9
81°
60°
10
80°
64°
11
81°
61°
12
80°
64°
13
80°
62°
14
76°
57°
15
75°
64°
16
74°
61°
17
76°
63°
18
78°
62°
19
77°
64°
20
79°
65°
21
80°
65°
22
78°
63°
23
76°
60°
24
75°
63°
25
76°
64°
26
80°
64°
27
79°
63°
28
78°
61°
29
73°
59°
30
72°
58°
31
72°
57°
1
73°
61°
2
75°
63°
3
76°
63°
4
75°
62°
5
78°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Niagara Falls
Niagara Falls's August 2026 forecast shows daily high temperatures ranging from 72° to 81°, with overnight lows between 57° and 65°. The average high for August is 77° with an average low of 62°. 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 Niagara Falls. See also: September | October | November.
