S
M
T
W
T
F
S
29
64°
41°
30
57°
40°
1
58°
38°
2
57°
39°
3
59°
40°
4
58°
43°
5
58°
42°
6
60°
41°
7
60°
47°
8
61°
46°
9
59°
48°
10
60°
49°
11
63°
48°
12
63°
45°
13
62°
45°
14
62°
46°
15
61°
47°
16
64°
46°
17
63°
43°
18
58°
45°
19
55°
46°
20
55°
46°
21
61°
42°
22
62°
46°
23
57°
48°
24
61°
46°
25
62°
45°
26
59°
47°
27
58°
43°
28
59°
42°
29
57°
39°
30
Hist. Avg.
59°
42°
31
Hist. Avg.
59°
42°
1
Hist. Avg.
59°
42°
2
Hist. Avg.
59°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Hayward
Hayward's December 2026 forecast shows daily high temperatures ranging from 55° to 64°, with overnight lows between 38° and 49°. The average high for December is 60° with an average low of 44°. 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 Hayward. See also: January | February | March.
