S
M
T
W
T
F
S
29
44°
25°
30
45°
24°
1
46°
21°
2
41°
24°
3
43°
24°
4
45°
25°
5
44°
24°
6
44°
23°
7
42°
21°
8
42°
20°
9
40°
21°
10
38°
22°
11
40°
21°
12
40°
21°
13
39°
22°
14
39°
21°
15
38°
12°
16
37°
16°
17
35°
19°
18
35°
20°
19
38°
15°
20
34°
12°
21
29°
14°
22
31°
13°
23
33°
7°
24
33°
4°
25
26°
4°
26
24°
5°
27
23°
10°
28
27°
7°
29
30°
1°
30
27°
3°
31
24°
17°
1
28°
8°
2
28°
5°
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 23° to 46°, with overnight lows between 1° and 25°. The average high for December is 36° with an average low of 16°. 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.
