S
M
T
W
T
F
S
26
57°
36°
27
58°
31°
28
60°
33°
29
64°
37°
30
65°
40°
1
69°
32°
2
79°
35°
3
79°
47°
4
77°
48°
5
72°
44°
6
73°
32°
7
77°
54°
8
78°
51°
9
75°
46°
10
84°
43°
11
83°
57°
12
90°
51°
13
86°
37°
14
72°
42°
15
69°
34°
16
57°
34°
17
46°
32°
18
59°
34°
19
66°
35°
20
69°
37°
21
75°
39°
22
74°
41°
23
78°
40°
24
72°
39°
25
74°
40°
26
69°
35°
27
62°
34°
28
63°
36°
29
64°
40°
30
65°
40°
31
72°
42°
1
75°
44°
2
76°
44°
3
76°
45°
4
74°
42°
5
64°
34°
6
66°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in San Jacinto
San Jacinto's May 2026 forecast shows daily high temperatures ranging from 46° to 86°, with overnight lows between 32° and 45°. The average high for May is 69° with an average low of 38°. 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 Jacinto. See also: June | July | August.
