S
M
T
W
T
F
S
29
45°
14°
30
42°
10°
1
31°
12°
2
27°
12°
3
32°
21°
4
34°
20°
5
37°
17°
6
35°
23°
7
38°
23°
8
39°
22°
9
38°
18°
10
37°
20°
11
38°
17°
12
36°
15°
13
32°
8°
14
27°
9°
15
24°
21°
16
35°
20°
17
Hist. Avg.
31°
18°
18
Hist. Avg.
31°
18°
19
Hist. Avg.
31°
17°
20
Hist. Avg.
31°
17°
21
Hist. Avg.
30°
16°
22
Hist. Avg.
30°
16°
23
Hist. Avg.
30°
16°
24
Hist. Avg.
30°
16°
25
Hist. Avg.
30°
15°
26
Hist. Avg.
30°
15°
27
Hist. Avg.
29°
15°
28
Hist. Avg.
29°
14°
29
Hist. Avg.
29°
14°
30
Hist. Avg.
29°
14°
31
Hist. Avg.
29°
13°
1
Hist. Avg.
28°
13°
2
Hist. Avg.
28°
13°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Peterson
Peterson's December 2026 forecast shows daily high temperatures ranging from 24° to 45°, with overnight lows between 8° and 23°. The average high for December is 35° with an average low of 17°. 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 Peterson. See also: January | February | March.