S
M
T
W
T
F
S
26
63°
52°
27
65°
48°
28
70°
49°
29
74°
51°
30
73°
52°
1
68°
53°
2
56°
53°
3
63°
53°
4
64°
52°
5
61°
52°
6
68°
52°
7
74°
53°
8
69°
52°
9
74°
53°
10
72°
53°
11
87°
53°
12
71°
53°
13
70°
54°
14
79°
52°
15
79°
51°
16
73°
51°
17
75°
50°
18
80°
64°
19
86°
59°
20
85°
60°
21
88°
59°
22
76°
52°
23
70°
55°
24
68°
55°
25
66°
54°
26
67°
51°
27
69°
55°
28
68°
56°
29
67°
53°
30
71°
51°
31
69°
53°
1
72°
53°
2
74°
57°
3
76°
55°
4
73°
56°
5
70°
57°
6
69°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Montclair
Montclair's May 2026 forecast shows daily high temperatures ranging from 67° to 76°, with overnight lows between 51° and 57°. The average high for May is 70° with an average low of 54°. 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.
