S
M
T
W
T
F
S
29
64°
36°
30
82°
43°
31
71°
48°
1
49°
35°
2
66°
35°
3
49°
39°
4
42°
35°
5
52°
32°
6
48°
32°
7
44°
25°
8
72°
39°
9
61°
39°
10
53°
36°
11
53°
35°
12
73°
50°
13
75°
60°
14
81°
59°
15
69°
56°
16
73°
56°
17
79°
44°
18
46°
31°
19
48°
29°
20
57°
29°
21
77°
51°
22
77°
56°
23
76°
58°
24
68°
42°
25
64°
46°
26
64°
49°
27
63°
45°
28
56°
40°
29
57°
41°
30
55°
39°
1
60°
40°
2
59°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Key West
Key West's April 2026 forecast shows daily high temperatures ranging from 55° to 77°, with overnight lows between 39° and 58°. The average high for April is 65° 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 Key West. See also: May | June | July.