S
M
T
W
T
F
S
26
54°
40°
27
59°
39°
28
64°
29°
29
68°
37°
30
70°
36°
1
70°
37°
2
74°
35°
3
79°
33°
4
67°
43°
5
67°
38°
6
74°
43°
7
82°
37°
8
87°
41°
9
85°
45°
10
87°
45°
11
90°
42°
12
91°
43°
13
82°
61°
14
85°
43°
15
86°
46°
16
82°
51°
17
69°
33°
18
61°
37°
19
67°
40°
20
70°
46°
21
78°
48°
22
74°
55°
23
76°
54°
24
84°
55°
25
83°
58°
26
84°
59°
27
83°
56°
28
84°
57°
29
84°
59°
30
85°
60°
31
69°
54°
1
77°
56°
2
78°
57°
3
79°
57°
4
79°
58°
5
80°
59°
6
80°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mount Wilson
Mount Wilson's May 2026 forecast shows daily high temperatures ranging from 61° to 85°, with overnight lows between 33° and 60°. The average high for May is 77° with an average low of 53°. 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 Mount Wilson. See also: June | July | August.
