S
M
T
W
T
F
S
26
63°
35°
27
70°
37°
28
69°
48°
29
58°
49°
30
49°
35°
1
48°
30°
2
43°
33°
3
51°
33°
4
60°
36°
5
64°
47°
6
51°
41°
7
47°
36°
8
50°
35°
9
64°
40°
10
52°
40°
11
51°
37°
12
52°
31°
13
49°
40°
14
52°
44°
15
63°
46°
16
70°
48°
17
66°
51°
18
71°
43°
19
81°
60°
20
71°
42°
21
55°
35°
22
65°
32°
23
65°
44°
24
54°
48°
25
64°
50°
26
85°
56°
27
71°
49°
28
68°
49°
29
65°
42°
30
58°
43°
31
65°
46°
1
70°
47°
2
73°
48°
3
76°
53°
4
77°
53°
5
76°
52°
6
73°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Montebello
Montebello's May 2026 forecast shows daily high temperatures ranging from 58° to 85°, with overnight lows between 42° and 56°. The average high for May is 71° with an average low of 49°. 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 Montebello. See also: June | July | August.
