S
M
T
W
T
F
S
26
73°
55°
27
73°
54°
28
68°
50°
29
81°
61°
30
75°
57°
1
64°
55°
2
61°
45°
3
70°
39°
4
81°
45°
5
81°
54°
6
82°
61°
7
79°
57°
8
72°
50°
9
73°
55°
10
84°
59°
11
72°
55°
12
72°
50°
13
81°
41°
14
77°
52°
15
77°
41°
16
84°
50°
17
90°
64°
18
91°
64°
19
91°
63°
20
93°
66°
21
93°
64°
22
84°
66°
23
72°
64°
24
84°
61°
25
82°
72°
26
82°
72°
27
86°
70°
28
91°
70°
29
86°
68°
30
86°
68°
31
73°
64°
1
86°
64°
2
70°
59°
3
79°
50°
4
86°
52°
5
88°
57°
6
88°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lancaster
Lancaster's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Lancaster. See also: June | July | August.
