S
M
T
W
T
F
S
26
84°
57°
27
84°
67°
28
79°
64°
29
72°
56°
30
65°
48°
1
69°
47°
2
71°
43°
3
77°
40°
4
80°
58°
5
70°
50°
6
60°
47°
7
72°
45°
8
76°
51°
9
85°
56°
10
79°
59°
11
78°
52°
12
80°
47°
13
83°
55°
14
77°
57°
15
85°
70°
16
84°
67°
17
90°
72°
18
82°
70°
19
83°
65°
20
77°
59°
21
75°
58°
22
76°
59°
23
79°
60°
24
81°
64°
25
84°
63°
26
81°
65°
27
82°
59°
28
83°
65°
29
83°
64°
30
80°
62°
31
80°
62°
1
78°
64°
2
78°
64°
3
80°
65°
4
85°
66°
5
86°
66°
6
85°
67°
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 75° to 90°, with overnight lows between 57° and 72°. The average high for May is 81° with an average low of 64°. 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.