S
M
T
W
T
F
S
29
48°
37°
30
49°
37°
1
48°
36°
2
49°
36°
3
48°
35°
4
44°
35°
5
47°
34°
6
47°
34°
7
42°
32°
8
38°
30°
9
36°
31°
10
37°
32°
11
39°
33°
12
39°
32°
13
38°
32°
14
35°
25°
15
37°
25°
16
35°
26°
17
36°
29°
18
37°
30°
19
42°
27°
20
38°
22°
21
36°
24°
22
37°
25°
23
32°
25°
24
36°
24°
25
33°
22°
26
32°
11°
27
30°
11°
28
30°
10°
29
31°
10°
30
29°
22°
31
32°
24°
1
37°
17°
2
34°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Welland
Welland's December 2026 forecast shows daily high temperatures ranging from 29° to 49°, with overnight lows between 10° and 37°. The average high for December is 38° with an average low of 27°. 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 Welland. See also: January | February | March.
