S
M
T
W
T
F
S
29
53°
37°
30
53°
35°
1
55°
32°
2
47°
33°
3
52°
22°
4
57°
22°
5
42°
24°
6
44°
23°
7
46°
25°
8
45°
22°
9
44°
20°
10
41°
20°
11
40°
21°
12
40°
21°
13
42°
22°
14
43°
22°
15
44°
23°
16
45°
25°
17
46°
33°
18
47°
31°
19
48°
28°
20
43°
26°
21
43°
27°
22
42°
26°
23
43°
25°
24
46°
22°
25
41°
21°
26
39°
22°
27
40°
21°
28
42°
22°
29
40°
22°
30
43°
26°
31
Hist. Avg.
46°
31°
1
Hist. Avg.
46°
30°
2
Hist. Avg.
46°
30°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in State Line
State Line's December 2026 forecast shows daily high temperatures ranging from 39° to 57°, with overnight lows between 20° and 37°. The average high for December is 45° 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 State Line. See also: January | February | March.
