S
M
T
W
T
F
S
26
68°
30°
27
68°
32°
28
72°
39°
29
66°
41°
30
66°
37°
1
75°
32°
2
76°
56°
3
72°
52°
4
65°
52°
5
62°
48°
6
58°
45°
7
63°
43°
8
70°
49°
9
70°
51°
10
68°
50°
11
67°
50°
12
64°
48°
13
63°
48°
14
62°
47°
15
61°
45°
16
69°
53°
17
70°
52°
18
69°
49°
19
63°
46°
20
61°
48°
21
61°
46°
22
62°
46°
23
62°
47°
24
64°
47°
25
68°
50°
26
71°
55°
27
72°
56°
28
72°
55°
29
69°
52°
30
71°
53°
31
73°
57°
1
74°
56°
2
73°
55°
3
73°
56°
4
72°
57°
5
74°
58°
6
73°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hefersweiler
Hefersweiler's May 2026 forecast shows daily high temperatures ranging from 58° to 76°, with overnight lows between 43° and 58°. The average high for May is 68° 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 Hefersweiler. See also: June | July | August.