S
M
T
W
T
F
S
26
70°
41°
27
68°
54°
28
61°
51°
29
60°
39°
30
62°
35°
1
53°
38°
2
57°
33°
3
66°
43°
4
79°
46°
5
57°
47°
6
58°
38°
7
61°
35°
8
66°
50°
9
77°
49°
10
67°
44°
11
62°
41°
12
82°
38°
13
62°
42°
14
69°
37°
15
73°
50°
16
82°
61°
17
86°
64°
18
80°
63°
19
80°
61°
20
64°
47°
21
71°
45°
22
76°
55°
23
80°
58°
24
75°
59°
25
82°
53°
26
82°
55°
27
88°
55°
28
82°
53°
29
84°
52°
30
82°
56°
31
81°
59°
1
80°
55°
2
82°
53°
3
83°
57°
4
87°
63°
5
86°
67°
6
84°
68°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lehigh
Lehigh's May 2026 forecast shows daily high temperatures ranging from 80° to 87°, with overnight lows between 53° and 68°. The average high for May is 83° with an average low of 60°. 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 Lehigh. See also: June | July | August.