S
M
T
W
T
F
S
29
81°
57°
30
82°
55°
1
76°
55°
2
74°
56°
3
76°
55°
4
75°
58°
5
75°
61°
6
79°
62°
7
80°
62°
8
81°
55°
9
82°
58°
10
74°
60°
11
75°
59°
12
76°
61°
13
77°
60°
14
81°
54°
15
81°
53°
16
73°
56°
17
73°
58°
18
76°
59°
19
78°
60°
20
79°
60°
21
79°
59°
22
78°
60°
23
80°
60°
24
81°
59°
25
80°
59°
26
79°
58°
27
77°
57°
28
78°
58°
29
75°
53°
30
78°
50°
31
79°
49°
1
70°
51°
2
72°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Fort Myers
Fort Myers's December 2026 forecast shows daily high temperatures ranging from 70° to 82°, with overnight lows between 49° and 62°. The average high for December is 77° 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 Fort Myers. See also: January | February | March.