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