S
M
T
W
T
F
S
29
78°
71°
30
81°
66°
1
82°
64°
2
77°
64°
3
73°
67°
4
75°
67°
5
74°
68°
6
78°
69°
7
76°
69°
8
78°
65°
9
79°
67°
10
76°
69°
11
78°
68°
12
79°
69°
13
76°
68°
14
80°
69°
15
79°
68°
16
80°
68°
17
76°
69°
18
78°
68°
19
79°
67°
20
76°
69°
21
77°
69°
22
79°
68°
23
80°
68°
24
78°
67°
25
79°
66°
26
77°
65°
27
73°
66°
28
73°
67°
29
76°
62°
30
79°
60°
31
76°
63°
1
71°
66°
2
72°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Big Pine Key
Big Pine Key's December 2026 forecast shows daily high temperatures ranging from 71° to 82°, with overnight lows between 60° and 71°. The average high for December is 77° with an average low of 67°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Big Pine Key. See also: January | February | March.
