S
M
T
W
T
F
S
29
53°
39°
30
56°
39°
1
55°
38°
2
55°
35°
3
43°
33°
4
49°
30°
5
55°
38°
6
52°
35°
7
41°
27°
8
40°
23°
9
39°
22°
10
39°
26°
11
38°
31°
12
40°
28°
13
41°
25°
14
37°
21°
15
38°
27°
16
39°
30°
17
42°
31°
18
46°
28°
19
45°
21°
20
40°
21°
21
37°
20°
22
36°
21°
23
39°
27°
24
39°
24°
25
38°
20°
26
37°
16°
27
35°
19°
28
34°
18°
29
35°
19°
30
36°
24°
31
41°
20°
1
42°
17°
2
35°
14°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Denniston
Denniston's December 2026 forecast shows daily high temperatures ranging from 34° to 56°, with overnight lows between 14° and 39°. 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 Denniston. See also: January | February | March.
