S
M
T
W
T
F
S
29
40°
25°
30
39°
24°
1
40°
24°
2
41°
27°
3
43°
29°
4
47°
32°
5
50°
35°
6
45°
33°
7
43°
32°
8
39°
32°
9
38°
27°
10
38°
27°
11
52°
36°
12
51°
30°
13
54°
27°
14
48°
23°
15
37°
24°
16
38°
23°
17
37°
28°
18
40°
34°
19
45°
36°
20
50°
37°
21
51°
35°
22
51°
35°
23
49°
38°
24
53°
34°
25
54°
25°
26
54°
22°
27
35°
24°
28
39°
32°
29
47°
35°
30
48°
36°
31
50°
38°
1
50°
33°
2
52°
25°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Reno
Reno's December 2026 forecast shows daily high temperatures ranging from 35° to 54°, with overnight lows between 22° and 38°. The average high for December is 45° with an average low of 30°. 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 Reno. See also: January | February | March.
