S
M
T
W
T
F
S
26
66°
54°
27
67°
58°
28
74°
50°
29
76°
52°
30
75°
56°
1
76°
57°
2
80°
57°
3
74°
57°
4
71°
52°
5
72°
56°
6
75°
59°
7
80°
61°
8
80°
60°
9
78°
59°
10
76°
59°
11
75°
60°
12
79°
60°
13
78°
61°
14
75°
58°
15
69°
53°
16
70°
54°
17
70°
55°
18
71°
54°
19
71°
55°
20
72°
55°
21
78°
59°
22
79°
62°
23
79°
61°
24
78°
60°
25
79°
61°
26
79°
61°
27
78°
59°
28
76°
58°
29
77°
56°
30
72°
57°
31
72°
56°
1
73°
56°
2
75°
58°
3
77°
60°
4
80°
60°
5
78°
61°
6
77°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in San Gabriel
San Gabriel's May 2026 forecast shows daily high temperatures ranging from 69° to 80°, with overnight lows between 52° and 62°. The average high for May is 76° 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 San Gabriel. See also: June | July | August.
