S
M
T
W
T
F
S
26
51°
38°
27
51°
37°
28
53°
36°
29
52°
34°
30
55°
35°
1
55°
41°
2
63°
38°
3
56°
36°
4
53°
34°
5
54°
33°
6
56°
33°
7
55°
37°
8
54°
37°
9
56°
35°
10
55°
34°
11
60°
37°
12
58°
38°
13
58°
36°
14
59°
36°
15
59°
37°
16
58°
36°
17
60°
46°
18
67°
46°
19
61°
43°
20
62°
39°
21
64°
45°
22
65°
40°
23
64°
41°
24
69°
40°
25
70°
47°
26
72°
48°
27
73°
49°
28
74°
49°
29
74°
48°
30
73°
50°
31
67°
50°
1
66°
49°
2
67°
51°
3
67°
46°
4
75°
44°
5
75°
53°
6
76°
53°
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 51° to 76°, with overnight lows between 33° and 53°. The average high for May is 62° with an average low of 41°. 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.