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