S
M
T
W
T
F
S
26
61°
41°
27
66°
43°
28
57°
45°
29
N/A
30
65°
46°
1
71°
51°
2
68°
53°
3
60°
48°
4
61°
47°
5
58°
41°
6
54°
40°
7
56°
42°
8
60°
45°
9
61°
46°
10
62°
47°
11
63°
46°
12
61°
46°
13
61°
45°
14
59°
41°
15
63°
48°
16
66°
49°
17
66°
48°
18
65°
48°
19
66°
47°
20
63°
47°
21
63°
45°
22
62°
45°
23
62°
46°
24
64°
46°
25
63°
43°
26
62°
44°
27
62°
48°
28
64°
49°
29
68°
50°
30
67°
45°
31
62°
44°
1
61°
44°
2
61°
43°
3
62°
46°
4
63°
45°
5
63°
45°
6
64°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sudbury
Sudbury's May 2026 forecast shows daily high temperatures ranging from 54° to 71°, with overnight lows between 40° and 53°. The average high for May is 63° with an average low of 46°. 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 Sudbury. See also: June | July | August.