S
M
T
W
T
F
S
26
54°
43°
27
68°
38°
28
59°
47°
29
58°
50°
30
62°
39°
1
64°
34°
2
54°
41°
3
62°
36°
4
74°
36°
5
84°
46°
6
70°
55°
7
67°
51°
8
67°
38°
9
66°
49°
10
70°
45°
11
63°
49°
12
70°
41°
13
67°
45°
14
57°
46°
15
71°
50°
16
82°
44°
17
87°
54°
18
95°
58°
19
94°
65°
20
89°
66°
21
70°
52°
22
59°
49°
23
52°
48°
24
61°
49°
25
78°
58°
26
74°
63°
27
81°
64°
28
77°
59°
29
82°
54°
30
71°
48°
31
76°
51°
1
76°
52°
2
73°
52°
3
76°
51°
4
82°
55°
5
85°
59°
6
80°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Andover
Andover's May 2026 forecast shows daily high temperatures ranging from 71° to 85°, with overnight lows between 48° and 59°. The average high for May is 78° with an average low of 53°. 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 Andover. See also: June | July | August.