S
M
T
W
T
F
S
29
90°
76°
30
91°
76°
31
90°
73°
1
87°
72°
2
91°
71°
3
90°
74°
4
88°
75°
5
85°
72°
6
86°
76°
7
89°
75°
8
90°
76°
9
90°
76°
10
90°
73°
11
90°
77°
12
90°
76°
13
90°
75°
14
87°
74°
15
89°
76°
16
89°
77°
17
90°
78°
18
90°
76°
19
91°
76°
20
88°
75°
21
89°
74°
22
89°
73°
23
89°
74°
24
86°
74°
25
84°
75°
26
87°
75°
27
90°
76°
28
93°
75°
29
94°
76°
30
92°
72°
1
93°
74°
2
93°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Saint Augustine
Saint Augustine's April 2026 forecast shows daily high temperatures ranging from 84° to 94°, with overnight lows between 72° and 76°. The average high for April is 90° with an average low of 74°. 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 Saint Augustine. See also: May | June | July.