S
M
T
W
T
F
S
28
77°
72°
29
85°
72°
30
92°
72°
1
101°
74°
2
103°
77°
3
103°
74°
4
100°
72°
5
93°
72°
6
90°
70°
7
86°
67°
8
87°
68°
9
85°
68°
10
89°
69°
11
90°
70°
12
88°
68°
13
87°
69°
14
81°
65°
15
81°
66°
16
82°
66°
17
82°
67°
18
83°
67°
19
83°
71°
20
85°
72°
21
85°
72°
22
88°
71°
23
85°
72°
24
84°
72°
25
87°
71°
26
88°
72°
27
89°
72°
28
88°
71°
29
86°
72°
30
87°
68°
31
82°
66°
1
81°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Montclair
Montclair's July 2026 forecast shows daily high temperatures ranging from 81° to 103°, with overnight lows between 65° and 77°. The average high for July is 88° with an average low of 70°. 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 Montclair. See also: August | September | October.