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°
66°
11
81°
65°
12
78°
61°
13
82°
63°
14
82°
61°
15
81°
61°
16
84°
60°
17
80°
65°
18
79°
58°
19
78°
63°
20
76°
56°
21
80°
54°
22
79°
58°
23
71°
59°
24
67°
57°
25
75°
60°
26
79°
62°
27
79°
62°
28
73°
56°
29
77°
52°
30
70°
65°
31
73°
69°
1
83°
69°
2
85°
67°
3
81°
59°
4
79°
60°
5
73°
59°
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 73° to 85°, with overnight lows between 59° and 69°. The average high for August is 79° with an average low of 64°. 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.
