S
M
T
W
T
F
S
26
58°
47°
27
68°
42°
28
65°
51°
29
64°
54°
30
72°
49°
1
68°
42°
2
62°
49°
3
64°
42°
4
77°
46°
5
84°
62°
6
72°
59°
7
60°
50°
8
72°
44°
9
75°
58°
10
80°
53°
11
64°
48°
12
70°
44°
13
N/A
14
64°
50°
15
73°
45°
16
85°
62°
17
89°
62°
18
92°
67°
19
94°
70°
20
86°
61°
21
71°
57°
22
76°
54°
23
75°
59°
24
74°
56°
25
76°
58°
26
78°
57°
27
78°
62°
28
79°
61°
29
72°
62°
30
77°
62°
31
77°
60°
1
73°
57°
2
74°
56°
3
73°
56°
4
74°
57°
5
76°
64°
6
83°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Montclair
Montclair's May 2026 forecast shows daily high temperatures ranging from 64° to 94°, with overnight lows between 45° and 70°. The average high for May is 78° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Montclair. See also: June | July | August.
