S
M
T
W
T
F
S
26
58°
45°
27
62°
39°
28
71°
41°
29
77°
51°
30
78°
59°
1
81°
62°
2
82°
57°
3
77°
53°
4
62°
48°
5
63°
46°
6
77°
46°
7
86°
60°
8
90°
63°
9
90°
61°
10
93°
65°
11
94°
68°
12
88°
65°
13
82°
67°
14
84°
58°
15
85°
63°
16
79°
57°
17
79°
55°
18
81°
56°
19
89°
58°
20
89°
63°
21
90°
64°
22
91°
56°
23
89°
56°
24
90°
57°
25
87°
53°
26
84°
54°
27
86°
54°
28
92°
55°
29
94°
57°
30
90°
54°
31
88°
55°
1
93°
58°
2
93°
59°
3
94°
59°
4
94°
58°
5
93°
59°
6
94°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Morongo Valley
Morongo Valley's May 2026 forecast shows daily high temperatures ranging from 79° to 94°, with overnight lows between 53° and 64°. The average high for May is 90° with an average low of 57°. 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 Morongo Valley. See also: June | July | August.