S
M
T
W
T
F
S
29
57°
41°
30
57°
49°
1
58°
41°
2
57°
44°
3
56°
45°
4
61°
46°
5
60°
40°
6
57°
44°
7
56°
40°
8
55°
45°
9
54°
45°
10
57°
44°
11
62°
47°
12
63°
44°
13
57°
42°
14
60°
43°
15
61°
44°
16
61°
45°
17
60°
46°
18
62°
47°
19
61°
48°
20
62°
41°
21
56°
43°
22
55°
42°
23
58°
44°
24
57°
41°
25
56°
41°
26
58°
44°
27
62°
43°
28
62°
42°
29
61°
43°
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 54° to 63°, with overnight lows between 40° and 49°. The average high for December is 59° 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.
