S
M
T
W
T
F
S
29
38°
30°
30
39°
29°
1
40°
32°
2
40°
26°
3
41°
24°
4
35°
31°
5
37°
33°
6
40°
40°
7
47°
35°
8
52°
31°
9
50°
28°
10
37°
27°
11
36°
26°
12
37°
25°
13
36°
28°
14
36°
26°
15
34°
24°
16
33°
26°
17
34°
27°
18
35°
29°
19
36°
32°
20
39°
34°
21
46°
27°
22
46°
28°
23
37°
34°
24
43°
33°
25
46°
29°
26
40°
28°
27
37°
21°
28
38°
17°
29
32°
19°
30
32°
12°
31
31°
13°
1
24°
16°
2
26°
24°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Ashtabula
Ashtabula's December 2026 forecast shows daily high temperatures ranging from 24° to 52°, with overnight lows between 12° and 40°. The average high for December is 38° with an average low of 27°. 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 Ashtabula. See also: January | February | March.
