S
M
T
W
T
F
S
29
53°
41°
30
59°
38°
1
61°
37°
2
57°
39°
3
55°
27°
4
65°
26°
5
49°
26°
6
51°
27°
7
53°
30°
8
51°
27°
9
51°
25°
10
50°
24°
11
48°
23°
12
47°
24°
13
47°
25°
14
49°
26°
15
50°
27°
16
51°
32°
17
51°
35°
18
50°
34°
19
51°
30°
20
50°
28°
21
49°
27°
22
48°
29°
23
51°
35°
24
50°
26°
25
50°
23°
26
45°
24°
27
47°
24°
28
46°
25°
29
47°
28°
30
47°
29°
31
45°
22°
1
46°
21°
2
Hist. Avg.
52°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Lyman
Lyman's December 2026 forecast shows daily high temperatures ranging from 45° to 65°, with overnight lows between 21° and 41°. The average high for December is 51° with an average low of 28°. 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 Lyman. See also: January | February | March.
