S
M
T
W
T
F
S
26
84°
57°
27
83°
58°
28
75°
64°
29
82°
65°
30
72°
63°
1
63°
52°
2
69°
45°
3
70°
45°
4
78°
51°
5
81°
59°
6
80°
61°
7
74°
49°
8
72°
52°
9
76°
58°
10
80°
60°
11
81°
61°
12
81°
60°
13
82°
59°
14
81°
57°
15
82°
62°
16
83°
63°
17
83°
63°
18
82°
62°
19
83°
64°
20
84°
64°
21
85°
63°
22
84°
64°
23
83°
64°
24
79°
65°
25
83°
65°
26
82°
66°
27
81°
65°
28
80°
63°
29
83°
65°
30
85°
64°
31
84°
65°
1
86°
66°
2
87°
67°
3
87°
68°
4
86°
67°
5
82°
66°
6
81°
64°
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 63° to 87°, with overnight lows between 45° and 68°. The average high for May is 81° with an average low of 61°. 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.