S
M
T
W
T
F
S
29
45°
30°
30
47°
34°
1
50°
33°
2
48°
33°
3
50°
31°
4
46°
29°
5
47°
28°
6
45°
31°
7
48°
30°
8
40°
26°
9
38°
25°
10
37°
23°
11
36°
27°
12
38°
25°
13
39°
24°
14
38°
19°
15
35°
19°
16
36°
22°
17
35°
21°
18
34°
26°
19
42°
25°
20
42°
19°
21
37°
18°
22
33°
18°
23
32°
17°
24
35°
21°
25
36°
17°
26
41°
10°
27
32°
10°
28
27°
11°
29
31°
10°
30
30°
16°
31
32°
22°
1
44°
16°
2
41°
11°
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 27° to 50°, with overnight lows between 10° and 34°. The average high for December is 39° with an average low of 22°. 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.
