S
M
T
W
T
F
S
26
66°
47°
27
63°
45°
28
60°
44°
29
59°
43°
30
59°
43°
1
60°
44°
2
60°
42°
3
61°
47°
4
61°
46°
5
65°
44°
6
61°
43°
7
60°
42°
8
62°
45°
9
70°
52°
10
67°
51°
11
69°
49°
12
72°
53°
13
72°
51°
14
66°
47°
15
71°
50°
16
73°
53°
17
70°
49°
18
68°
46°
19
72°
52°
20
72°
53°
21
68°
49°
22
66°
47°
23
66°
49°
24
73°
54°
25
69°
49°
26
68°
49°
27
74°
51°
28
76°
56°
29
77°
59°
30
77°
59°
31
78°
58°
1
74°
58°
2
74°
57°
3
76°
50°
4
70°
48°
5
70°
52°
6
72°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Heidelsheim
Heidelsheim's May 2026 forecast shows daily high temperatures ranging from 59° to 78°, with overnight lows between 42° and 59°. The average high for May is 68° with an average low of 49°. 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 Heidelsheim. See also: June | July | August.