S
M
T
W
T
F
S
26
64°
31°
27
72°
35°
28
70°
42°
29
70°
41°
30
53°
42°
1
52°
35°
2
47°
36°
3
47°
32°
4
64°
30°
5
77°
51°
6
52°
40°
7
52°
35°
8
50°
33°
9
59°
30°
10
63°
43°
11
53°
34°
12
51°
33°
13
48°
32°
14
55°
48°
15
65°
50°
16
74°
48°
17
73°
52°
18
83°
44°
19
81°
62°
20
76°
51°
21
56°
33°
22
64°
30°
23
69°
48°
24
54°
49°
25
68°
49°
26
78°
60°
27
73°
53°
28
62°
47°
29
61°
47°
30
66°
44°
31
65°
48°
1
67°
50°
2
68°
50°
3
71°
52°
4
72°
53°
5
73°
49°
6
71°
49°
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 54° to 78°, with overnight lows between 44° and 60°. The average high for May is 68° with an average low of 50°. 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.
