S
M
T
W
T
F
S
29
41°
16°
30
31°
13°
1
32°
14°
2
36°
26°
3
42°
26°
4
37°
21°
5
32°
21°
6
30°
11°
7
29°
11°
8
33°
21°
9
41°
22°
10
40°
20°
11
41°
23°
12
41°
23°
13
42°
24°
14
37°
24°
15
34°
25°
16
38°
14°
17
36°
17°
18
30°
10°
19
31°
18°
20
34°
20°
21
36°
14°
22
36°
19°
23
34°
19°
24
37°
17°
25
34°
27°
26
37°
15°
27
40°
7°
28
35°
13°
29
27°
12°
30
33°
9°
31
30°
21°
1
32°
25°
2
37°
19°
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 27° to 42°, with overnight lows between 7° and 27°. The average high for December is 35° with an average low of 18°. 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.
