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
57°
41°
6
74°
51°
7
82°
55°
8
83°
54°
9
83°
56°
10
86°
52°
11
92°
54°
12
83°
55°
13
80°
54°
14
78°
53°
15
79°
52°
16
76°
53°
17
80°
52°
18
79°
53°
19
83°
57°
20
83°
57°
21
82°
56°
22
83°
58°
23
84°
58°
24
85°
57°
25
84°
58°
26
84°
58°
27
83°
56°
28
77°
55°
29
76°
54°
30
77°
55°
31
78°
57°
1
78°
58°
2
80°
58°
3
80°
58°
4
81°
58°
5
81°
57°
6
82°
55°
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 57° to 92°, with overnight lows between 41° and 58°. The average high for May is 80° with an average low of 55°. 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.