S
M
T
W
T
F
S
27
89°
78°
28
88°
76°
29
87°
77°
30
88°
76°
1
87°
77°
2
88°
78°
3
87°
74°
4
88°
74°
5
87°
75°
6
87°
76°
7
85°
77°
8
Hist. Avg.
87°
71°
9
Hist. Avg.
87°
71°
10
Hist. Avg.
87°
70°
11
Hist. Avg.
87°
70°
12
Hist. Avg.
86°
70°
13
Hist. Avg.
86°
70°
14
Hist. Avg.
86°
70°
15
Hist. Avg.
86°
70°
16
Hist. Avg.
86°
70°
17
Hist. Avg.
86°
69°
18
Hist. Avg.
86°
69°
19
Hist. Avg.
86°
69°
20
Hist. Avg.
85°
69°
21
Hist. Avg.
85°
69°
22
Hist. Avg.
85°
68°
23
Hist. Avg.
85°
68°
24
Hist. Avg.
85°
68°
25
Hist. Avg.
85°
68°
26
Hist. Avg.
85°
68°
27
Hist. Avg.
84°
67°
28
Hist. Avg.
84°
67°
29
Hist. Avg.
84°
67°
30
Hist. Avg.
84°
67°
31
Hist. Avg.
84°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Upper Keys
Upper Keys's October 2026 forecast shows daily high temperatures ranging from 85° to 89°, with overnight lows between 74° and 78°. The average high for October is 87° with an average low of 76°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Upper Keys. See also: November | December | January.
