S
M
T
W
T
F
S
26
66°
42°
27
65°
39°
28
67°
38°
29
73°
34°
30
77°
41°
1
79°
41°
2
82°
42°
3
80°
37°
4
72°
42°
5
69°
42°
6
83°
43°
7
88°
40°
8
90°
44°
9
90°
49°
10
94°
42°
11
95°
47°
12
95°
49°
13
90°
51°
14
88°
55°
15
89°
49°
16
83°
53°
17
80°
40°
18
72°
35°
19
76°
31°
20
81°
37°
21
88°
40°
22
85°
49°
23
89°
45°
24
88°
45°
25
89°
44°
26
81°
47°
27
40°
21°
28
29°
21°
29
39°
31°
30
46°
37°
31
52°
40°
1
61°
35°
2
61°
36°
3
62°
37°
4
64°
36°
5
65°
38°
6
61°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Whitney Portal
Whitney Portal's May 2026 forecast shows daily high temperatures ranging from 29° to 65°, with overnight lows between 21° and 40°. The average high for May is 53° with an average low of 33°. 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 Whitney Portal. See also: June | July | August.
