S
M
T
W
T
F
S
29
43°
28°
30
40°
30°
1
41°
31°
2
42°
19°
3
43°
16°
4
38°
14°
5
29°
14°
6
30°
15°
7
29°
14°
8
30°
12°
9
29°
11°
10
25°
13°
11
27°
13°
12
28°
14°
13
28°
17°
14
29°
23°
15
31°
24°
16
34°
19°
17
35°
21°
18
35°
27°
19
36°
26°
20
36°
25°
21
35°
22°
22
34°
25°
23
35°
19°
24
36°
20°
25
34°
24°
26
35°
17°
27
33°
17°
28
29°
13°
29
33°
18°
30
34°
24°
31
Hist. Avg.
30°
15°
1
Hist. Avg.
30°
15°
2
Hist. Avg.
30°
15°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Brown Deer Park
Brown Deer Park's December 2026 forecast shows daily high temperatures ranging from 25° to 43°, with overnight lows between 11° and 31°. The average high for December is 34° with an average low of 20°. 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 Brown Deer Park. See also: January | February | March.
