S
M
T
W
T
F
S
29
67°
44°
30
85°
56°
31
82°
54°
1
52°
41°
2
76°
47°
3
81°
53°
4
72°
39°
5
57°
36°
6
59°
38°
7
47°
35°
8
76°
43°
9
82°
50°
10
67°
42°
11
71°
38°
12
79°
62°
13
84°
64°
14
87°
60°
15
74°
61°
16
82°
59°
17
84°
45°
18
57°
38°
19
64°
38°
20
68°
51°
21
75°
52°
22
76°
52°
23
80°
60°
24
75°
51°
25
65°
44°
26
57°
40°
27
59°
42°
28
64°
43°
29
66°
43°
30
70°
47°
1
66°
43°
2
64°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in South Jacksonville
South Jacksonville's April 2026 forecast shows daily high temperatures ranging from 57° to 84°, with overnight lows between 38° and 60°. The average high for April is 68° 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 South Jacksonville. See also: May | June | July.