S
M
T
W
T
F
S
29
51°
31°
30
52°
22°
1
49°
22°
2
46°
20°
3
38°
17°
4
36°
24°
5
40°
22°
6
47°
17°
7
39°
15°
8
34°
19°
9
35°
18°
10
34°
15°
11
34°
15°
12
33°
18°
13
36°
12°
14
34°
11°
15
31°
11°
16
31°
12°
17
Hist. Avg.
37°
17°
18
Hist. Avg.
36°
17°
19
Hist. Avg.
36°
16°
20
Hist. Avg.
36°
16°
21
Hist. Avg.
36°
16°
22
Hist. Avg.
35°
15°
23
Hist. Avg.
35°
15°
24
Hist. Avg.
35°
15°
25
Hist. Avg.
34°
15°
26
Hist. Avg.
34°
14°
27
Hist. Avg.
34°
14°
28
Hist. Avg.
34°
14°
29
Hist. Avg.
34°
13°
30
Hist. Avg.
33°
13°
31
Hist. Avg.
33°
13°
1
Hist. Avg.
33°
13°
2
Hist. Avg.
33°
12°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Lyman
Lyman's December 2026 forecast shows daily high temperatures ranging from 31° to 52°, with overnight lows between 11° and 31°. The average high for December is 39° with an average low of 18°. 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.
