S
M
T
W
T
F
S
29
51°
26°
30
47°
25°
1
37°
22°
2
37°
24°
3
38°
25°
4
43°
29°
5
48°
35°
6
48°
38°
7
52°
32°
8
52°
29°
9
50°
28°
10
41°
27°
11
42°
22°
12
38°
20°
13
35°
21°
14
36°
19°
15
33°
20°
16
33°
18°
17
32°
14°
18
32°
20°
19
33°
16°
20
33°
23°
21
37°
30°
22
44°
29°
23
46°
24°
24
40°
21°
25
36°
14°
26
33°
13°
27
30°
24°
28
38°
16°
29
38°
13°
30
30°
10°
31
29°
18°
1
30°
23°
2
38°
16°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Youngstown
Youngstown's December 2026 forecast shows daily high temperatures ranging from 29° to 52°, with overnight lows between 10° and 38°. The average high for December is 39° with an average low of 22°. 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 Youngstown. See also: January | February | March.
