S
M
T
W
T
F
S
26
60°
42°
27
59°
43°
28
58°
38°
29
57°
43°
30
58°
42°
1
59°
45°
2
59°
43°
3
60°
39°
4
58°
38°
5
58°
38°
6
61°
39°
7
65°
45°
8
66°
46°
9
64°
44°
10
66°
43°
11
62°
40°
12
61°
41°
13
62°
41°
14
61°
43°
15
63°
42°
16
64°
43°
17
64°
43°
18
65°
46°
19
65°
43°
20
66°
44°
21
67°
47°
22
71°
50°
23
71°
52°
24
68°
54°
25
75°
53°
26
69°
50°
27
68°
54°
28
76°
54°
29
76°
49°
30
70°
49°
31
67°
50°
1
68°
48°
2
73°
50°
3
77°
56°
4
79°
56°
5
79°
55°
6
78°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Leominster
Leominster's May 2026 forecast shows daily high temperatures ranging from 57° to 79°, with overnight lows between 38° and 56°. The average high for May is 66° with an average low of 46°. 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 Leominster. See also: June | July | August.