S
M
T
W
T
F
S
29
56°
36°
30
56°
30°
1
55°
25°
2
42°
22°
3
46°
32°
4
55°
34°
5
51°
33°
6
41°
29°
7
42°
22°
8
39°
20°
9
40°
24°
10
44°
28°
11
46°
25°
12
51°
26°
13
47°
28°
14
43°
24°
15
45°
24°
16
44°
25°
17
41°
21°
18
40°
18°
19
39°
17°
20
38°
15°
21
36°
20°
22
39°
23°
23
41°
20°
24
39°
17°
25
37°
17°
26
37°
21°
27
39°
18°
28
38°
16°
29
37°
21°
30
37°
19°
31
38°
15°
1
37°
11°
2
35°
16°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Buffalo
Buffalo's December 2026 forecast shows daily high temperatures ranging from 35° to 56°, with overnight lows between 11° and 36°. The average high for December is 43° 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 Buffalo. See also: January | February | March.
