S
M
T
W
T
F
S
29
56°
36°
30
55°
25°
1
53°
24°
2
40°
23°
3
41°
23°
4
38°
33°
5
49°
31°
6
52°
24°
7
43°
23°
8
39°
27°
9
41°
24°
10
40°
23°
11
38°
22°
12
39°
23°
13
39°
21°
14
37°
20°
15
34°
17°
16
34°
20°
17
Hist. Avg.
42°
23°
18
Hist. Avg.
41°
22°
19
Hist. Avg.
41°
22°
20
Hist. Avg.
41°
22°
21
Hist. Avg.
40°
22°
22
Hist. Avg.
40°
22°
23
Hist. Avg.
40°
21°
24
Hist. Avg.
40°
21°
25
Hist. Avg.
40°
21°
26
Hist. Avg.
39°
21°
27
Hist. Avg.
39°
21°
28
Hist. Avg.
39°
20°
29
Hist. Avg.
39°
20°
30
Hist. Avg.
38°
20°
31
Hist. Avg.
38°
20°
1
Hist. Avg.
38°
20°
2
Hist. Avg.
38°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Parsippany
Parsippany's December 2026 forecast shows daily high temperatures ranging from 34° to 56°, with overnight lows between 17° and 36°. The average high for December is 43° with an average low of 24°. 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 Parsippany. See also: January | February | March.
