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