S
M
T
W
T
F
S
29
35°
23°
30
35°
24°
1
37°
24°
2
39°
23°
3
39°
21°
4
38°
17°
5
35°
18°
6
36°
13°
7
35°
15°
8
32°
19°
9
34°
20°
10
35°
17°
11
37°
15°
12
27°
18°
13
36°
20°
14
Hist. Avg.
25°
6°
15
Hist. Avg.
25°
6°
16
Hist. Avg.
25°
6°
17
Hist. Avg.
25°
5°
18
Hist. Avg.
24°
5°
19
Hist. Avg.
24°
4°
20
Hist. Avg.
24°
4°
21
Hist. Avg.
24°
4°
22
Hist. Avg.
24°
3°
23
Hist. Avg.
24°
3°
24
Hist. Avg.
23°
3°
25
Hist. Avg.
23°
2°
26
Hist. Avg.
23°
2°
27
Hist. Avg.
23°
2°
28
Hist. Avg.
23°
2°
29
Hist. Avg.
23°
1°
30
Hist. Avg.
22°
1°
31
Hist. Avg.
22°
1°
1
Hist. Avg.
22°
1°
2
Hist. Avg.
22°
1°
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 27° to 39°, with overnight lows between 13° and 24°. The average high for December is 35° with an average low of 19°. 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.
