S
M
T
W
T
F
S
29
40°
24°
30
35°
19°
1
27°
16°
2
28°
21°
3
37°
23°
4
40°
23°
5
32°
22°
6
31°
19°
7
25°
15°
8
26°
20°
9
36°
21°
10
37°
21°
11
37°
20°
12
36°
20°
13
35°
21°
14
28°
19°
15
32°
18°
16
32°
16°
17
30°
11°
18
29°
7°
19
25°
2°
20
19°
2°
21
17°
15°
22
30°
15°
23
31°
7°
24
28°
7°
25
24°
15°
26
27°
16°
27
31°
15°
28
30°
11°
29
29°
12°
30
26°
7°
31
24°
-2°
1
19°
0°
2
16°
10°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Salem
Salem's December 2026 forecast shows daily high temperatures ranging from 16° to 40°, with overnight lows between -2° and 24°. The average high for December is 29° with an average low of 15°. 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 Salem. See also: January | February | March.
