S
M
T
W
T
F
S
29
61°
32°
30
60°
25°
1
48°
21°
2
49°
25°
3
55°
33°
4
61°
31°
5
49°
24°
6
48°
25°
7
47°
20°
8
45°
20°
9
47°
27°
10
51°
30°
11
53°
29°
12
59°
31°
13
53°
29°
14
51°
21°
15
49°
26°
16
50°
23°
17
49°
18°
18
46°
18°
19
47°
17°
20
44°
18°
21
48°
24°
22
47°
19°
23
46°
21°
24
52°
18°
25
46°
21°
26
52°
24°
27
56°
24°
28
52°
17°
29
47°
22°
30
46°
16°
31
46°
17°
1
47°
19°
2
47°
26°
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 44° to 61°, with overnight lows between 16° and 33°. The average high for December is 50° 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.
