S
M
T
W
T
F
S
29
69°
41°
30
68°
38°
1
69°
42°
2
68°
44°
3
67°
42°
4
65°
43°
5
65°
41°
6
64°
39°
7
63°
41°
8
63°
40°
9
66°
41°
10
65°
38°
11
62°
41°
12
65°
41°
13
66°
43°
14
66°
39°
15
65°
39°
16
64°
38°
17
66°
38°
18
60°
37°
19
60°
34°
20
58°
32°
21
59°
32°
22
59°
36°
23
60°
32°
24
60°
32°
25
59°
33°
26
59°
32°
27
58°
31°
28
59°
34°
29
60°
36°
30
62°
35°
31
66°
36°
1
62°
32°
2
61°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Boulder Creek
Boulder Creek's December 2026 forecast shows daily high temperatures ranging from 58° to 69°, with overnight lows between 31° and 44°. The average high for December is 63° 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 Boulder Creek. See also: January | February | March.
