S
M
T
W
T
F
S
26
80°
65°
27
85°
67°
28
79°
66°
29
74°
65°
30
81°
62°
31
78°
63°
1
76°
67°
2
71°
61°
3
79°
61°
4
79°
62°
5
76°
65°
6
80°
69°
7
75°
71°
8
82°
70°
9
N/A
10
81°
62°
11
82°
60°
12
80°
61°
13
77°
58°
14
76°
59°
15
75°
62°
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
*Temporarily Unavailable
August Weather in Niagara Falls
Niagara Falls's August 2026 forecast shows daily high temperatures ranging from 72° to 82°, 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.
