S
M
T
W
T
F
S
26
69°
48°
27
80°
44°
28
77°
53°
29
67°
49°
30
56°
39°
1
59°
34°
2
54°
33°
3
61°
47°
4
71°
56°
5
74°
58°
6
61°
46°
7
57°
39°
8
57°
45°
9
58°
38°
10
63°
41°
11
65°
44°
12
67°
43°
13
65°
47°
14
67°
47°
15
69°
49°
16
68°
48°
17
76°
54°
18
76°
53°
19
72°
53°
20
77°
52°
21
74°
51°
22
70°
46°
23
66°
45°
24
68°
47°
25
68°
49°
26
69°
48°
27
68°
47°
28
69°
47°
29
69°
48°
30
70°
48°
31
76°
57°
1
71°
54°
2
72°
50°
3
72°
55°
4
74°
57°
5
77°
57°
6
81°
59°
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 57° to 81°, with overnight lows between 38° and 59°. The average high for May is 69° with an average low of 49°. 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.
