S
M
T
W
T
F
S
26
48°
38°
27
53°
31°
28
66°
29°
29
70°
33°
30
73°
40°
1
76°
41°
2
80°
46°
3
69°
46°
4
50°
38°
5
48°
38°
6
67°
33°
7
78°
42°
8
81°
45°
9
83°
44°
10
90°
47°
11
87°
48°
12
87°
55°
13
71°
51°
14
73°
53°
15
75°
53°
16
71°
45°
17
67°
51°
18
71°
42°
19
75°
43°
20
70°
43°
21
69°
42°
22
68°
42°
23
70°
41°
24
69°
42°
25
68°
40°
26
74°
43°
27
67°
38°
28
68°
39°
29
69°
39°
30
72°
41°
31
77°
45°
1
78°
47°
2
79°
48°
3
80°
48°
4
79°
41°
5
72°
42°
6
74°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Idyllwild
Idyllwild's May 2026 forecast shows daily high temperatures ranging from 67° to 80°, with overnight lows between 38° and 53°. The average high for May is 72° with an average low of 44°. 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 Idyllwild. See also: June | July | August.