S
M
T
W
T
F
S
29
75°
57°
30
75°
61°
1
80°
60°
2
82°
57°
3
80°
54°
4
75°
55°
5
76°
54°
6
75°
53°
7
73°
52°
8
74°
53°
9
73°
53°
10
74°
57°
11
75°
57°
12
77°
57°
13
76°
57°
14
76°
56°
15
77°
57°
16
Hist. Avg.
76°
55°
17
Hist. Avg.
76°
55°
18
Hist. Avg.
76°
55°
19
Hist. Avg.
76°
54°
20
Hist. Avg.
75°
54°
21
Hist. Avg.
75°
54°
22
Hist. Avg.
75°
54°
23
Hist. Avg.
75°
54°
24
Hist. Avg.
75°
54°
25
Hist. Avg.
75°
53°
26
Hist. Avg.
75°
53°
27
Hist. Avg.
75°
53°
28
Hist. Avg.
75°
53°
29
Hist. Avg.
75°
53°
30
Hist. Avg.
75°
53°
31
Hist. Avg.
75°
52°
1
Hist. Avg.
75°
52°
2
Hist. Avg.
75°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Clewiston
Clewiston's December 2026 forecast shows daily high temperatures ranging from 73° to 82°, with overnight lows between 52° and 61°. The average high for December is 76° with an average low of 56°. 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 Clewiston. See also: January | February | March.