S
M
T
W
T
F
S
29
42°
36°
30
48°
27°
1
48°
27°
2
37°
30°
3
47°
23°
4
39°
22°
5
34°
20°
6
33°
21°
7
32°
22°
8
35°
28°
9
39°
28°
10
38°
27°
11
37°
28°
12
35°
26°
13
34°
23°
14
34°
23°
15
35°
15°
16
31°
13°
17
28°
23°
18
32°
30°
19
37°
29°
20
42°
26°
21
42°
29°
22
38°
31°
23
42°
30°
24
43°
26°
25
42°
25°
26
36°
26°
27
38°
27°
28
39°
29°
29
41°
31°
30
42°
29°
31
43°
26°
1
42°
25°
2
39°
25°
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 28° to 48°, with overnight lows between 13° and 36°. The average high for December is 38° with an average low of 26°. 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.
