S
M
T
W
T
F
S
26
72°
53°
27
70°
56°
28
69°
52°
29
69°
51°
30
64°
48°
1
66°
51°
2
65°
46°
3
66°
54°
4
70°
55°
5
74°
56°
6
69°
54°
7
68°
53°
8
75°
57°
9
76°
58°
10
75°
58°
11
76°
59°
12
77°
59°
13
77°
58°
14
76°
55°
15
72°
55°
16
76°
59°
17
78°
60°
18
77°
60°
19
76°
57°
20
71°
53°
21
71°
55°
22
76°
60°
23
77°
60°
24
78°
62°
25
80°
62°
26
80°
63°
27
81°
63°
28
81°
64°
29
80°
64°
30
81°
63°
31
80°
64°
1
80°
63°
2
76°
63°
3
81°
62°
4
79°
59°
5
75°
58°
6
81°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Montclair South
Montclair South's May 2026 forecast shows daily high temperatures ranging from 64° to 81°, with overnight lows between 46° and 64°. The average high for May is 75° with an average low of 58°. 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 South. See also: June | July | August.
