S
M
T
W
T
F
S
29
46°
30°
30
48°
33°
1
49°
32°
2
48°
33°
3
50°
31°
4
48°
30°
5
47°
29°
6
45°
30°
7
48°
29°
8
42°
27°
9
38°
28°
10
39°
26°
11
39°
28°
12
38°
25°
13
40°
21°
14
41°
17°
15
35°
17°
16
33°
20°
17
34°
19°
18
33°
25°
19
38°
24°
20
42°
22°
21
38°
19°
22
34°
18°
23
33°
13°
24
35°
21°
25
34°
16°
26
38°
10°
27
31°
11°
28
27°
11°
29
31°
10°
30
29°
13°
31
30°
23°
1
43°
18°
2
41°
12°
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 33°. 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.
