S
M
T
W
T
F
S
31
90°
84°
1
88°
81°
2
91°
79°
3
87°
77°
4
87°
74°
5
84°
71°
6
85°
77°
7
87°
79°
8
87°
80°
9
88°
82°
10
87°
80°
11
88°
80°
12
87°
81°
13
88°
81°
14
89°
82°
15
88°
82°
16
88°
82°
17
89°
84°
18
89°
84°
19
89°
84°
20
90°
82°
21
91°
83°
22
92°
82°
23
91°
83°
24
90°
82°
25
91°
83°
26
90°
84°
27
91°
82°
28
92°
82°
29
90°
82°
30
90°
83°
1
91°
82°
2
90°
82°
3
91°
83°
4
89°
82°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Key West
Key West's June 2026 forecast shows daily high temperatures ranging from 89° to 92°, with overnight lows between 82° and 84°. The average high for June is 91° with an average low of 82°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Key West. See also: July | August | September.