S
M
T
W
T
F
S
29
45°
22°
30
42°
21°
1
39°
23°
2
42°
17°
3
38°
23°
4
40°
27°
5
41°
28°
6
48°
29°
7
47°
30°
8
49°
29°
9
48°
31°
10
43°
26°
11
43°
22°
12
40°
26°
13
41°
27°
14
Hist. Avg.
38°
22°
15
Hist. Avg.
38°
22°
16
Hist. Avg.
38°
22°
17
Hist. Avg.
38°
22°
18
Hist. Avg.
37°
21°
19
Hist. Avg.
37°
21°
20
Hist. Avg.
37°
21°
21
Hist. Avg.
37°
21°
22
Hist. Avg.
37°
21°
23
Hist. Avg.
37°
21°
24
Hist. Avg.
37°
21°
25
Hist. Avg.
36°
21°
26
Hist. Avg.
36°
21°
27
Hist. Avg.
36°
20°
28
Hist. Avg.
36°
20°
29
Hist. Avg.
36°
20°
30
Hist. Avg.
36°
20°
31
Hist. Avg.
36°
20°
1
Hist. Avg.
36°
20°
2
Hist. Avg.
36°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Lehi
Lehi's December 2026 forecast shows daily high temperatures ranging from 38° to 49°, with overnight lows between 17° and 31°. The average high for December is 43° with an average low of 25°. 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 Lehi. See also: January | February | March.