S
M
T
W
T
F
S
29
64°
42°
30
70°
50°
1
70°
44°
2
69°
34°
3
65°
38°
4
60°
31°
5
57°
28°
6
52°
34°
7
51°
34°
8
50°
29°
9
53°
27°
10
51°
39°
11
56°
38°
12
55°
35°
13
57°
33°
14
63°
32°
15
56°
37°
16
56°
39°
17
50°
43°
18
58°
44°
19
64°
43°
20
65°
44°
21
65°
43°
22
63°
42°
23
67°
40°
24
63°
34°
25
59°
33°
26
59°
41°
27
58°
44°
28
63°
40°
29
64°
40°
30
62°
31°
31
63°
30°
1
52°
29°
2
46°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Prosper
Prosper's December 2026 forecast shows daily high temperatures ranging from 46° to 70°, with overnight lows between 27° and 50°. The average high for December is 59° with an average low of 37°. 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 Prosper. See also: January | February | March.
