S
M
T
W
T
F
S
26
63°
41°
27
70°
35°
28
66°
35°
29
62°
44°
30
53°
44°
1
63°
41°
2
55°
44°
3
56°
33°
4
73°
38°
5
84°
51°
6
73°
52°
7
63°
40°
8
60°
37°
9
49°
33°
10
73°
48°
11
63°
40°
12
64°
36°
13
61°
39°
14
58°
48°
15
56°
43°
16
79°
41°
17
88°
60°
18
86°
54°
19
97°
61°
20
88°
66°
21
68°
45°
22
66°
40°
23
66°
49°
24
53°
51°
25
73°
52°
26
83°
64°
27
86°
60°
28
73°
50°
29
70°
49°
30
67°
45°
31
67°
48°
1
71°
52°
2
74°
52°
3
80°
55°
4
80°
56°
5
81°
58°
6
79°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Bolton
Bolton's May 2026 forecast shows daily high temperatures ranging from 67° to 86°, with overnight lows between 45° and 64°. The average high for May is 76° 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 Bolton. See also: June | July | August.