S
M
T
W
T
F
S
29
77°
49°
30
79°
62°
31
81°
67°
1
78°
66°
2
82°
65°
3
78°
66°
4
66°
47°
5
69°
40°
6
73°
46°
7
72°
50°
8
75°
56°
9
77°
59°
10
76°
61°
11
78°
62°
12
74°
64°
13
76°
61°
14
78°
52°
15
76°
52°
16
69°
50°
17
71°
52°
18
73°
48°
19
75°
54°
20
77°
56°
21
77°
56°
22
76°
51°
23
68°
54°
24
77°
55°
25
78°
57°
26
78°
57°
27
77°
56°
28
76°
57°
29
71°
56°
30
69°
56°
1
70°
57°
2
68°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Keys
Keys's April 2026 forecast shows daily high temperatures ranging from 68° to 78°, with overnight lows between 40° and 64°. The average high for April is 74° 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 April weather will actually feel in Keys. See also: May | June | July.