S
M
T
W
T
F
S
29
45°
38°
30
42°
35°
1
42°
40°
2
44°
40°
3
46°
39°
4
46°
40°
5
45°
39°
6
42°
40°
7
44°
38°
8
45°
37°
9
43°
40°
10
46°
40°
11
45°
37°
12
44°
40°
13
46°
40°
14
46°
39°
15
48°
40°
16
47°
39°
17
46°
32°
18
39°
30°
19
38°
33°
20
43°
37°
21
45°
35°
22
42°
35°
23
42°
33°
24
43°
30°
25
43°
30°
26
44°
34°
27
44°
32°
28
42°
31°
29
42°
35°
30
40°
32°
31
42°
34°
1
40°
31°
2
40°
28°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
December Weather in Steveston
Steveston's December 2026 forecast shows daily high temperatures ranging from 38° to 48°, with overnight lows between 28° and 40°. The average high for December is 43° with an average low of 36°. 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 Steveston. See also: January | February | March.