S
M
T
W
T
F
S
29
43°
37°
30
41°
37°
1
47°
36°
2
47°
38°
3
49°
34°
4
35°
29°
5
48°
26°
6
48°
24°
7
35°
20°
8
34°
26°
9
36°
20°
10
35°
19°
11
33°
21°
12
33°
24°
13
36°
24°
14
36°
29°
15
38°
32°
16
41°
29°
17
46°
25°
18
43°
24°
19
35°
23°
20
34°
22°
21
34°
20°
22
33°
23°
23
37°
27°
24
41°
30°
25
39°
30°
26
39°
28°
27
38°
25°
28
35°
22°
29
33°
19°
30
31°
15°
31
32°
18°
1
32°
18°
2
33°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Amherst
Amherst's December 2026 forecast shows daily high temperatures ranging from 31° to 49°, with overnight lows between 15° and 38°. 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 Amherst. See also: January | February | March.
