S
M
T
W
T
F
S
30
73°
50°
1
51°
46°
2
56°
40°
3
72°
43°
4
69°
48°
5
51°
46°
6
64°
51°
7
78°
52°
8
61°
42°
9
67°
38°
10
74°
47°
11
72°
45°
12
78°
56°
13
78°
62°
14
68°
40°
15
58°
34°
16
68°
40°
17
68°
60°
18
77°
55°
19
66°
41°
20
76°
53°
21
77°
67°
22
79°
70°
23
81°
68°
24
79°
67°
25
80°
62°
26
77°
70°
27
78°
70°
28
79°
68°
29
68°
46°
30
59°
39°
31
63°
34°
1
72°
42°
2
78°
63°
3
84°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Port O'Connor
Port O'Connor's December 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for December is ° with an average low of °. 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 Port O'Connor. See also: January | February | March.