S
M
T
W
T
F
S
26
80°
63°
27
85°
55°
28
87°
57°
29
85°
62°
30
92°
63°
1
87°
60°
2
91°
62°
3
94°
73°
4
84°
60°
5
79°
59°
6
82°
55°
7
91°
57°
8
95°
61°
9
100°
66°
10
102°
68°
11
106°
68°
12
104°
73°
13
101°
73°
14
98°
69°
15
95°
65°
16
97°
64°
17
94°
64°
18
90°
68°
19
92°
63°
20
91°
62°
21
94°
64°
22
91°
61°
23
91°
61°
24
92°
59°
25
87°
55°
26
87°
57°
27
92°
62°
28
92°
63°
29
89°
64°
30
91°
66°
31
96°
67°
1
96°
67°
2
101°
68°
3
100°
69°
4
93°
66°
5
91°
67°
6
95°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in San Manuel
San Manuel's May 2026 forecast shows daily high temperatures ranging from 87° to 101°, with overnight lows between 55° and 71°. The average high for May is 93° with an average low of 64°. 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 Manuel. See also: June | July | August.
