S
M
T
W
T
F
S
28
102°
79°
29
81°
66°
30
N/A
1
65°
53°
2
77°
53°
3
68°
48°
4
71°
54°
5
69°
53°
6
67°
55°
7
69°
53°
8
71°
53°
9
74°
53°
10
77°
57°
11
81°
59°
12
78°
58°
13
76°
54°
14
74°
57°
15
74°
56°
16
73°
58°
17
75°
54°
18
69°
50°
19
70°
52°
20
74°
57°
21
74°
55°
22
67°
54°
23
68°
50°
24
71°
53°
25
75°
58°
26
77°
59°
27
77°
59°
28
76°
60°
29
77°
58°
30
74°
55°
31
74°
58°
1
76°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Heidelberg
Heidelberg's July 2026 forecast shows daily high temperatures ranging from 65° to 81°, with overnight lows between 48° and 60°. The average high for July is 73° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Heidelberg. See also: August | September | October.
