S
M
T
W
T
F
S
29
47°
26°
30
42°
25°
1
41°
25°
2
40°
23°
3
38°
26°
4
40°
29°
5
40°
31°
6
44°
30°
7
43°
27°
8
42°
26°
9
41°
25°
10
42°
26°
11
43°
25°
12
39°
25°
13
40°
26°
14
Hist. Avg.
36°
20°
15
Hist. Avg.
36°
20°
16
Hist. Avg.
36°
20°
17
Hist. Avg.
36°
20°
18
Hist. Avg.
36°
20°
19
Hist. Avg.
36°
20°
20
Hist. Avg.
36°
20°
21
Hist. Avg.
36°
20°
22
Hist. Avg.
36°
20°
23
Hist. Avg.
36°
20°
24
Hist. Avg.
36°
20°
25
Hist. Avg.
36°
20°
26
Hist. Avg.
36°
20°
27
Hist. Avg.
36°
20°
28
Hist. Avg.
36°
20°
29
Hist. Avg.
36°
20°
30
Hist. Avg.
36°
20°
31
Hist. Avg.
36°
20°
1
Hist. Avg.
36°
20°
2
Hist. Avg.
36°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Twin Falls
Twin Falls's December 2026 forecast shows daily high temperatures ranging from 38° to 47°, with overnight lows between 23° and 31°. The average high for December is 41° with an average low of 26°. 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 Twin Falls. See also: January | February | March.
