S
M
T
W
T
F
S
29
46°
33°
30
48°
33°
1
47°
34°
2
47°
33°
3
48°
30°
4
44°
26°
5
46°
31°
6
47°
31°
7
43°
28°
8
37°
26°
9
36°
25°
10
35°
24°
11
35°
29°
12
38°
27°
13
37°
27°
14
34°
21°
15
37°
22°
16
35°
22°
17
38°
26°
18
37°
27°
19
42°
25°
20
38°
16°
21
36°
19°
22
34°
21°
23
31°
21°
24
34°
20°
25
32°
19°
26
32°
15°
27
30°
11°
28
27°
9°
29
28°
7°
30
28°
18°
31
33°
20°
1
41°
15°
2
32°
15°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Wellsburg
Wellsburg's December 2026 forecast shows daily high temperatures ranging from 27° to 48°, with overnight lows between 7° and 34°. The average high for December is 38° with an average low of 23°. 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 Wellsburg. See also: January | February | March.