S
M
T
W
T
F
S
28
80°
63°
29
79°
59°
30
83°
61°
1
87°
63°
2
87°
67°
3
86°
66°
4
84°
62°
5
82°
61°
6
83°
62°
7
82°
60°
8
79°
57°
9
77°
61°
10
82°
64°
11
82°
63°
12
83°
63°
13
83°
64°
14
82°
64°
15
82°
63°
16
81°
63°
17
82°
62°
18
74°
59°
19
75°
62°
20
78°
62°
21
82°
63°
22
83°
63°
23
82°
62°
24
77°
62°
25
83°
63°
26
83°
64°
27
82°
64°
28
83°
63°
29
80°
62°
30
77°
62°
31
80°
63°
1
80°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Niagara
Niagara's July 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 57° and 67°. The average high for July is 81° 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 July weather will actually feel in Niagara. See also: August | September | October.