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