S
M
T
W
T
F
S
29
56°
26°
30
53°
23°
1
48°
22°
2
37°
23°
3
38°
28°
4
40°
35°
5
45°
35°
6
49°
31°
7
47°
29°
8
42°
33°
9
43°
27°
10
44°
25°
11
38°
22°
12
39°
21°
13
37°
20°
14
34°
18°
15
32°
19°
16
Hist. Avg.
42°
26°
17
Hist. Avg.
42°
26°
18
Hist. Avg.
41°
26°
19
Hist. Avg.
41°
25°
20
Hist. Avg.
41°
25°
21
Hist. Avg.
40°
25°
22
Hist. Avg.
40°
25°
23
Hist. Avg.
40°
24°
24
Hist. Avg.
40°
24°
25
Hist. Avg.
40°
24°
26
Hist. Avg.
39°
24°
27
Hist. Avg.
39°
24°
28
Hist. Avg.
39°
23°
29
Hist. Avg.
39°
23°
30
Hist. Avg.
39°
23°
31
Hist. Avg.
38°
23°
1
Hist. Avg.
38°
22°
2
Hist. Avg.
38°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Etna
Etna's December 2026 forecast shows daily high temperatures ranging from 32° to 56°, with overnight lows between 18° and 35°. The average high for December is 42° with an average low of 26°. 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 Etna. See also: January | February | March.