S
M
T
W
T
F
S
26
58°
43°
27
71°
39°
28
58°
42°
29
59°
49°
30
65°
48°
1
67°
38°
2
60°
45°
3
62°
42°
4
75°
39°
5
84°
58°
6
69°
56°
7
66°
50°
8
68°
42°
9
64°
51°
10
75°
49°
11
64°
48°
12
67°
38°
13
73°
53°
14
60°
51°
15
71°
50°
16
83°
47°
17
87°
60°
18
95°
63°
19
95°
70°
20
91°
55°
21
66°
53°
22
62°
49°
23
57°
53°
24
69°
58°
25
72°
57°
26
75°
59°
27
76°
58°
28
78°
59°
29
76°
56°
30
78°
57°
31
82°
61°
1
85°
55°
2
77°
59°
3
73°
60°
4
75°
60°
5
77°
57°
6
76°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in West Lancaster
West Lancaster's May 2026 forecast shows daily high temperatures ranging from 57° to 95°, with overnight lows between 49° and 70°. The average high for May is 76° with an average low of 58°. 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 West Lancaster. See also: June | July | August.