S
M
T
W
T
F
S
29
40°
31°
30
42°
30°
1
41°
31°
2
45°
31°
3
43°
30°
4
35°
21°
5
33°
15°
6
32°
11°
7
27°
14°
8
22°
19°
9
32°
10°
10
31°
6°
11
29°
11°
12
28°
20°
13
30°
24°
14
34°
24°
15
34°
23°
16
34°
20°
17
34°
17°
18
32°
17°
19
31°
15°
20
28°
14°
21
33°
21°
22
33°
19°
23
34°
19°
24
34°
20°
25
33°
19°
26
34°
19°
27
31°
17°
28
29°
17°
29
28°
14°
30
28°
11°
31
26°
17°
1
28°
16°
2
32°
16°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Stillwater
Stillwater's December 2026 forecast shows daily high temperatures ranging from 22° to 45°, with overnight lows between 6° and 31°. The average high for December is 33° with an average low of 19°. 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 Stillwater. See also: January | February | March.
