S
M
T
W
T
F
S
26
64°
43°
27
59°
48°
28
57°
43°
29
63°
41°
30
68°
43°
1
64°
45°
2
61°
43°
3
55°
50°
4
59°
46°
5
55°
45°
6
55°
43°
7
59°
43°
8
61°
46°
9
63°
45°
10
59°
41°
11
54°
43°
12
55°
43°
13
52°
45°
14
55°
43°
15
52°
43°
16
N/A
17
57°
44°
18
61°
50°
19
62°
52°
20
64°
52°
21
69°
56°
22
74°
56°
23
70°
53°
24
69°
55°
25
69°
54°
26
68°
52°
27
68°
51°
28
69°
52°
29
60°
45°
30
60°
46°
31
60°
48°
1
61°
47°
2
61°
46°
3
63°
51°
4
62°
52°
5
64°
53°
6
67°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in St Helens
St Helens's May 2026 forecast shows daily high temperatures ranging from 57° to 74°, with overnight lows between 44° and 56°. The average high for May is 65° with an average low of 51°. 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 St Helens. See also: June | July | August.
