S
M
T
W
T
F
S
29
55°
35°
30
47°
32°
1
45°
34°
2
44°
37°
3
46°
33°
4
48°
29°
5
44°
31°
6
43°
29°
7
42°
27°
8
41°
25°
9
40°
23°
10
38°
22°
11
37°
31°
12
50°
30°
13
Hist. Avg.
45°
30°
14
Hist. Avg.
44°
30°
15
Hist. Avg.
44°
30°
16
Hist. Avg.
44°
29°
17
Hist. Avg.
44°
29°
18
Hist. Avg.
44°
29°
19
Hist. Avg.
43°
29°
20
Hist. Avg.
43°
28°
21
Hist. Avg.
43°
28°
22
Hist. Avg.
42°
28°
23
Hist. Avg.
42°
28°
24
Hist. Avg.
42°
28°
25
Hist. Avg.
42°
27°
26
Hist. Avg.
42°
27°
27
Hist. Avg.
41°
27°
28
Hist. Avg.
41°
27°
29
Hist. Avg.
41°
26°
30
Hist. Avg.
41°
26°
31
Hist. Avg.
41°
26°
1
Hist. Avg.
40°
26°
2
Hist. Avg.
40°
26°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Fishers Island
Fishers Island's December 2026 forecast shows daily high temperatures ranging from 37° to 55°, with overnight lows between 22° and 37°. The average high for December is 44° with an average low of 30°. 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 Fishers Island. See also: January | February | March.
