S
M
T
W
T
F
S
29
57°
35°
30
50°
28°
1
49°
29°
2
52°
33°
3
49°
29°
4
50°
36°
5
49°
35°
6
52°
28°
7
50°
27°
8
49°
31°
9
50°
30°
10
49°
36°
11
51°
36°
12
55°
30°
13
51°
25°
14
47°
24°
15
45°
27°
16
46°
26°
17
46°
26°
18
47°
27°
19
47°
32°
20
48°
27°
21
48°
29°
22
49°
32°
23
48°
27°
24
48°
29°
25
47°
33°
26
50°
28°
27
49°
27°
28
50°
34°
29
49°
37°
30
52°
32°
31
55°
27°
1
53°
30°
2
56°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Twain Harte
Twain Harte's December 2026 forecast shows daily high temperatures ranging from 45° to 57°, with overnight lows between 24° and 37°. The average high for December is 50° with an average low of 30°. 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 Twain Harte. See also: January | February | March.
