S
M
T
W
T
F
S
29
71°
37°
30
71°
55°
31
82°
60°
1
79°
66°
2
85°
65°
3
80°
63°
4
84°
63°
5
64°
43°
6
66°
36°
7
59°
41°
8
72°
36°
9
76°
51°
10
78°
53°
11
73°
56°
12
85°
58°
13
77°
62°
14
81°
60°
15
85°
64°
16
85°
63°
17
82°
59°
18
82°
44°
19
59°
41°
20
61°
37°
21
78°
55°
22
78°
55°
23
83°
57°
24
84°
61°
25
75°
53°
26
71°
56°
27
70°
51°
28
68°
46°
29
66°
44°
30
64°
46°
1
68°
47°
2
67°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Heidelberg
Heidelberg's April 2026 forecast shows daily high temperatures ranging from 61° to 84°, with overnight lows between 37° and 61°. The average high for April is 72° 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 April weather will actually feel in Heidelberg. See also: May | June | July.
