S
M
T
W
T
F
S
26
64°
39°
27
58°
40°
28
59°
40°
29
61°
38°
30
64°
38°
1
60°
36°
2
59°
35°
3
59°
37°
4
58°
37°
5
59°
38°
6
60°
40°
7
61°
41°
8
62°
45°
9
63°
40°
10
62°
39°
11
62°
40°
12
63°
41°
13
65°
47°
14
68°
42°
15
63°
42°
16
62°
44°
17
68°
45°
18
65°
43°
19
65°
45°
20
67°
50°
21
73°
50°
22
69°
49°
23
66°
46°
24
68°
47°
25
70°
50°
26
75°
52°
27
76°
50°
28
78°
45°
29
71°
43°
30
72°
49°
31
70°
47°
1
70°
49°
2
71°
48°
3
77°
45°
4
71°
47°
5
71°
52°
6
79°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Lowell
Lowell's May 2026 forecast shows daily high temperatures ranging from 58° to 79°, with overnight lows between 35° and 55°. The average high for May is 66° with an average low of 44°. 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 Lowell. See also: June | July | August.
