S
M
T
W
T
F
S
26
52°
37°
27
52°
36°
28
61°
36°
29
57°
41°
30
46°
37°
1
61°
34°
2
70°
39°
3
73°
50°
4
72°
46°
5
46°
32°
6
42°
37°
7
71°
45°
8
71°
48°
9
74°
44°
10
75°
47°
11
84°
54°
12
78°
52°
13
77°
53°
14
76°
54°
15
79°
55°
16
81°
53°
17
76°
54°
18
82°
56°
19
72°
47°
20
66°
48°
21
67°
49°
22
68°
50°
23
69°
48°
24
70°
50°
25
70°
46°
26
71°
47°
27
77°
51°
28
79°
53°
29
77°
52°
30
73°
50°
31
76°
52°
1
76°
53°
2
80°
54°
3
83°
57°
4
81°
54°
5
72°
52°
6
75°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Highland
Highland's May 2026 forecast shows daily high temperatures ranging from 42° to 84°, with overnight lows between 37° and 57°. The average high for May is 74° with an average low of 51°. 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 Highland. See also: June | July | August.