S
M
T
W
T
F
S
31
85°
78°
1
85°
77°
2
84°
77°
3
85°
78°
4
84°
76°
5
87°
78°
6
86°
78°
7
88°
79°
8
87°
78°
9
88°
79°
10
89°
80°
11
88°
79°
12
88°
80°
13
89°
79°
14
88°
78°
15
87°
78°
16
88°
79°
17
88°
79°
18
89°
80°
19
88°
79°
20
88°
79°
21
89°
80°
22
89°
79°
23
88°
79°
24
88°
80°
25
90°
80°
26
90°
81°
27
89°
81°
28
88°
80°
29
89°
81°
30
90°
80°
1
90°
81°
2
92°
80°
3
90°
80°
4
89°
81°
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 84° to 92°, with overnight lows between 76° and 81°. The average high for June is 88° with an average low of 79°. 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.