S
M
T
W
T
F
S
26
91°
83°
27
89°
81°
28
90°
81°
29
89°
80°
30
86°
79°
1
90°
79°
2
88°
80°
3
91°
78°
4
94°
80°
5
94°
79°
6
94°
79°
7
94°
78°
8
94°
79°
9
95°
77°
10
90°
79°
11
92°
79°
12
91°
78°
13
95°
79°
14
92°
77°
15
93°
78°
16
90°
78°
17
89°
79°
18
89°
78°
19
90°
78°
20
90°
79°
21
89°
78°
22
89°
78°
23
90°
79°
24
89°
79°
25
89°
78°
26
90°
80°
27
90°
80°
28
91°
79°
29
89°
80°
30
90°
79°
31
89°
80°
1
89°
79°
2
90°
78°
3
88°
79°
4
89°
78°
5
88°
78°
6
88°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in San Isidro (Jaro)
San Isidro (Jaro)'s May 2026 forecast shows daily high temperatures ranging from 88° to 95°, with overnight lows between 77° and 80°. The average high for May is 91° with an average low of 79°. 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 Isidro (Jaro). See also: June | July | August.