S
M
T
W
T
F
S
29
40°
27°
30
41°
26°
1
38°
25°
2
38°
25°
3
36°
24°
4
39°
24°
5
38°
23°
6
33°
22°
7
31°
16°
8
25°
14°
9
28°
17°
10
34°
22°
11
35°
22°
12
36°
21°
13
32°
21°
14
27°
18°
15
29°
17°
16
32°
18°
17
33°
19°
18
31°
17°
19
32°
14°
20
29°
7°
21
29°
12°
22
22°
13°
23
31°
17°
24
29°
14°
25
32°
7°
26
28°
8°
27
22°
11°
28
25°
8°
29
27°
10°
30
23°
13°
31
26°
6°
1
30°
2°
2
19°
1°
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 19° to 41°, with overnight lows between 1° and 27°. The average high for December is 31° 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 Amherst. See also: January | February | March.
