S
M
T
W
T
F
S
29
43°
26°
30
44°
27°
1
40°
26°
2
41°
27°
3
44°
26°
4
43°
26°
5
42°
25°
6
42°
23°
7
39°
24°
8
43°
26°
9
44°
26°
10
41°
25°
11
27°
7°
12
25°
16°
13
32°
19°
14
34°
15°
15
34°
18°
16
36°
14°
17
37°
19°
18
34°
16°
19
36°
17°
20
36°
16°
21
32°
15°
22
41°
11°
23
33°
7°
24
28°
16°
25
29°
19°
26
37°
21°
27
37°
22°
28
41°
15°
29
37°
16°
30
36°
17°
31
34°
10°
1
35°
7°
2
29°
9°
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 25° to 44°, with overnight lows between 7° and 27°. The average high for December is 37° with an average low of 19°. 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.
