S
M
T
W
T
F
S
29
57°
38°
30
56°
37°
1
56°
38°
2
57°
39°
3
58°
38°
4
60°
40°
5
59°
45°
6
58°
40°
7
57°
46°
8
56°
38°
9
62°
44°
10
54°
38°
11
Hist. Avg.
58°
41°
12
Hist. Avg.
58°
41°
13
Hist. Avg.
58°
41°
14
Hist. Avg.
58°
41°
15
Hist. Avg.
58°
40°
16
Hist. Avg.
58°
40°
17
Hist. Avg.
58°
40°
18
Hist. Avg.
58°
40°
19
Hist. Avg.
58°
40°
20
Hist. Avg.
58°
40°
21
Hist. Avg.
58°
40°
22
Hist. Avg.
57°
40°
23
Hist. Avg.
57°
40°
24
Hist. Avg.
57°
40°
25
Hist. Avg.
57°
40°
26
Hist. Avg.
57°
40°
27
Hist. Avg.
57°
40°
28
Hist. Avg.
57°
40°
29
Hist. Avg.
57°
40°
30
Hist. Avg.
57°
40°
31
Hist. Avg.
57°
40°
1
Hist. Avg.
57°
40°
2
Hist. Avg.
57°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Pacheco
Pacheco's December 2026 forecast shows daily high temperatures ranging from 54° to 62°, with overnight lows between 37° and 46°. The average high for December is 58° with an average low of 40°. 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 Pacheco. See also: January | February | March.