S
M
T
W
T
F
S
29
66°
52°
30
66°
52°
1
68°
57°
2
72°
63°
3
72°
61°
4
69°
60°
5
69°
60°
6
70°
59°
7
69°
56°
8
67°
55°
9
68°
53°
10
67°
52°
11
79°
63°
12
79°
56°
13
81°
51°
14
76°
52°
15
66°
50°
16
67°
49°
17
65°
58°
18
68°
60°
19
74°
62°
20
76°
61°
21
76°
60°
22
78°
61°
23
77°
63°
24
79°
54°
25
79°
49°
26
76°
49°
27
64°
54°
28
67°
59°
29
74°
60°
30
75°
60°
31
76°
59°
1
77°
60°
2
77°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Treasure Island
Treasure Island's December 2026 forecast shows daily high temperatures ranging from 64° to 81°, with overnight lows between 49° and 63°. The average high for December is 72° with an average low of 57°. 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 Treasure Island. See also: January | February | March.
