S
M
T
W
T
F
S
29
76°
75°
30
82°
71°
31
82°
74°
1
82°
74°
2
82°
72°
3
83°
76°
4
81°
74°
5
81°
75°
6
80°
73°
7
76°
71°
8
80°
72°
9
78°
73°
10
81°
72°
11
80°
74°
12
82°
73°
13
81°
73°
14
83°
73°
15
82°
75°
16
83°
74°
17
84°
72°
18
81°
73°
19
82°
74°
20
81°
74°
21
82°
73°
22
82°
74°
23
83°
74°
24
83°
73°
25
84°
74°
26
83°
74°
27
83°
73°
28
84°
74°
29
85°
75°
30
81°
75°
1
82°
74°
2
81°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Upper Keys
Upper Keys's April 2026 forecast shows daily high temperatures ranging from 76° to 85°, with overnight lows between 71° and 75°. The average high for April is 82° 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 Upper Keys. See also: May | June | July.
