S
M
T
W
T
F
S
26
64°
45°
27
64°
46°
28
75°
38°
29
79°
43°
30
84°
48°
1
86°
52°
2
88°
51°
3
75°
50°
4
65°
50°
5
66°
48°
6
84°
47°
7
92°
51°
8
91°
56°
9
94°
51°
10
98°
56°
11
99°
58°
12
97°
58°
13
83°
57°
14
88°
56°
15
85°
57°
16
79°
60°
17
74°
55°
18
76°
45°
19
81°
45°
20
86°
50°
21
89°
54°
22
88°
60°
23
88°
59°
24
87°
58°
25
83°
58°
26
68°
53°
27
66°
49°
28
67°
48°
29
71°
50°
30
85°
49°
31
89°
51°
1
91°
54°
2
93°
59°
3
97°
59°
4
97°
59°
5
96°
64°
6
90°
64°
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.
