S
M
T
W
T
F
S
26
60°
40°
27
60°
39°
28
61°
38°
29
60°
38°
30
62°
37°
1
63°
45°
2
71°
43°
3
64°
42°
4
63°
40°
5
64°
38°
6
65°
40°
7
64°
41°
8
63°
42°
9
65°
43°
10
65°
39°
11
67°
43°
12
67°
45°
13
68°
42°
14
67°
43°
15
67°
41°
16
68°
41°
17
69°
51°
18
75°
50°
19
71°
50°
20
72°
48°
21
72°
50°
22
74°
43°
23
72°
46°
24
73°
46°
25
72°
47°
26
76°
52°
27
79°
51°
28
80°
53°
29
80°
53°
30
79°
52°
31
74°
53°
1
73°
54°
2
73°
54°
3
74°
52°
4
81°
52°
5
81°
56°
6
80°
56°
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 60° to 81°, with overnight lows between 37° and 56°. The average high for May is 70° 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.