S
M
T
W
T
F
S
29
61°
41°
30
83°
48°
31
80°
51°
1
51°
38°
2
73°
42°
3
66°
44°
4
51°
40°
5
54°
33°
6
55°
33°
7
47°
39°
8
70°
53°
9
71°
49°
10
66°
45°
11
66°
50°
12
77°
57°
13
76°
54°
14
69°
41°
15
66°
43°
16
59°
36°
17
65°
39°
18
67°
41°
19
63°
38°
20
68°
45°
21
67°
47°
22
67°
45°
23
68°
43°
24
68°
38°
25
62°
45°
26
59°
45°
27
65°
44°
28
70°
43°
29
63°
38°
30
63°
42°
1
67°
45°
2
64°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in St. Augustine
St. Augustine's April 2026 forecast shows daily high temperatures ranging from 47° to 77°, with overnight lows between 33° and 57°. The average high for April is 65° with an average low of 44°. 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 St. Augustine. See also: May | June | July.