S
M
T
W
T
F
S
29
46°
30°
30
52°
41°
31
52°
37°
1
54°
36°
2
59°
30°
3
57°
41°
4
63°
52°
5
68°
52°
6
61°
41°
7
68°
41°
8
70°
41°
9
N/A
10
57°
43°
11
71°
46°
12
54°
46°
13
56°
46°
14
58°
45°
15
63°
46°
16
63°
44°
17
66°
45°
18
68°
48°
19
64°
47°
20
68°
48°
21
70°
49°
22
56°
44°
23
57°
45°
24
56°
42°
25
57°
41°
26
56°
41°
27
59°
42°
28
66°
49°
29
66°
47°
30
68°
50°
1
66°
50°
2
64°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Heidelberg
Heidelberg's April 2026 forecast shows daily high temperatures ranging from 54° to 71°, with overnight lows between 41° and 50°. The average high for April is 62° with an average low of 46°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Heidelberg. See also: May | June | July.
