S
M
T
W
T
F
S
29
66°
45°
30
67°
47°
1
63°
48°
2
66°
45°
3
68°
44°
4
71°
49°
5
71°
42°
6
65°
40°
7
65°
42°
8
66°
45°
9
66°
39°
10
62°
43°
11
61°
45°
12
61°
41°
13
62°
38°
14
62°
37°
15
61°
37°
16
61°
39°
17
62°
39°
18
65°
42°
19
67°
40°
20
61°
38°
21
60°
37°
22
61°
36°
23
60°
36°
24
59°
38°
25
60°
38°
26
63°
39°
27
62°
38°
28
64°
36°
29
60°
35°
30
59°
37°
31
60°
38°
1
64°
38°
2
65°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Amboy
Amboy's December 2026 forecast shows daily high temperatures ranging from 59° to 71°, with overnight lows between 35° and 49°. The average high for December is 63° with an average low of 40°. 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 Amboy. See also: January | February | March.