S
M
T
W
T
F
S
26
51°
37°
27
49°
39°
28
58°
33°
29
63°
36°
30
62°
37°
1
64°
37°
2
69°
38°
3
73°
41°
4
67°
48°
5
64°
42°
6
63°
38°
7
73°
36°
8
78°
45°
9
77°
46°
10
76°
46°
11
84°
44°
12
90°
52°
13
82°
53°
14
79°
50°
15
81°
44°
16
75°
45°
17
63°
39°
18
50°
37°
19
59°
36°
20
66°
36°
21
72°
38°
22
69°
44°
23
78°
43°
24
82°
52°
25
81°
52°
26
65°
50°
27
76°
48°
28
76°
49°
29
69°
45°
30
71°
48°
31
78°
53°
1
84°
52°
2
85°
53°
3
84°
56°
4
85°
54°
5
82°
54°
6
80°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Helper
Helper's May 2026 forecast shows daily high temperatures ranging from 65° to 85°, with overnight lows between 45° and 56°. The average high for May is 78° 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 Helper. See also: June | July | August.
