S
M
T
W
T
F
S
26
67°
34°
27
61°
37°
28
63°
42°
29
66°
33°
30
75°
37°
1
71°
48°
2
67°
47°
3
83°
44°
4
67°
53°
5
67°
50°
6
71°
48°
7
71°
49°
8
69°
45°
9
75°
37°
10
71°
45°
11
76°
43°
12
77°
47°
13
66°
43°
14
70°
42°
15
66°
39°
16
60°
46°
17
63°
40°
18
71°
40°
19
72°
36°
20
71°
43°
21
81°
44°
22
80°
44°
23
75°
46°
24
80°
46°
25
67°
48°
26
64°
48°
27
66°
45°
28
70°
52°
29
66°
48°
30
63°
45°
31
65°
48°
1
70°
49°
2
77°
52°
3
78°
53°
4
79°
54°
5
68°
50°
6
66°
45°
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 63° to 80°, with overnight lows between 45° and 54°. The average high for May is 70° 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.
