S
M
T
W
T
F
S
29
47°
29°
30
48°
31°
1
50°
31°
2
46°
36°
3
61°
31°
4
60°
24°
5
46°
27°
6
46°
28°
7
54°
33°
8
55°
36°
9
45°
23°
10
53°
36°
11
57°
36°
12
Hist. Avg.
50°
32°
13
Hist. Avg.
50°
32°
14
Hist. Avg.
50°
32°
15
Hist. Avg.
50°
32°
16
Hist. Avg.
50°
32°
17
Hist. Avg.
50°
32°
18
Hist. Avg.
49°
32°
19
Hist. Avg.
49°
31°
20
Hist. Avg.
49°
31°
21
Hist. Avg.
49°
31°
22
Hist. Avg.
49°
31°
23
Hist. Avg.
49°
31°
24
Hist. Avg.
48°
31°
25
Hist. Avg.
48°
30°
26
Hist. Avg.
48°
30°
27
Hist. Avg.
48°
30°
28
Hist. Avg.
48°
30°
29
Hist. Avg.
48°
30°
30
Hist. Avg.
48°
30°
31
Hist. Avg.
48°
30°
1
Hist. Avg.
48°
30°
2
Hist. Avg.
47°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Fincastle
Fincastle's December 2026 forecast shows daily high temperatures ranging from 45° to 61°, with overnight lows between 23° and 36°. The average high for December is 51° with an average low of 31°. 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 Fincastle. See also: January | February | March.