S
M
T
W
T
F
S
29
68°
46°
30
69°
48°
1
71°
45°
2
73°
35°
3
67°
34°
4
60°
31°
5
57°
27°
6
53°
30°
7
52°
33°
8
52°
30°
9
54°
28°
10
52°
32°
11
56°
38°
12
52°
33°
13
57°
33°
14
64°
29°
15
57°
37°
16
54°
38°
17
52°
41°
18
55°
44°
19
64°
43°
20
66°
43°
21
67°
42°
22
62°
43°
23
66°
41°
24
67°
36°
25
61°
33°
26
60°
40°
27
57°
45°
28
65°
42°
29
65°
40°
30
64°
33°
31
65°
29°
1
54°
30°
2
51°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Pittsburg
Pittsburg's December 2026 forecast shows daily high temperatures ranging from 51° to 73°, with overnight lows between 27° and 48°. The average high for December is 60° 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 Pittsburg. See also: January | February | March.
