S
M
T
W
T
F
S
27
40°
13°
28
32°
22°
29
30°
17°
30
38°
20°
31
33°
22°
1
38°
26°
2
38°
17°
3
37°
15°
4
32°
14°
5
33°
14°
6
32°
13°
7
32°
13°
8
30°
12°
9
29°
14°
10
32°
15°
11
36°
14°
12
32°
13°
13
30°
14°
14
32°
13°
15
34°
15°
16
36°
15°
17
34°
16°
18
33°
17°
19
37°
23°
20
38°
26°
21
37°
23°
22
38°
22°
23
39°
22°
24
40°
23°
25
37°
24°
26
38°
27°
27
38°
27°
28
42°
28°
29
41°
26°
30
43°
26°
31
Hist. Avg.
38°
22°
1
Hist. Avg.
38°
22°
2
Hist. Avg.
38°
22°
3
Hist. Avg.
38°
22°
4
Hist. Avg.
38°
22°
5
Hist. Avg.
39°
22°
6
Hist. Avg.
39°
22°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Twin Falls
Twin Falls's January 2027 forecast shows daily high temperatures ranging from 29° to 43°, with overnight lows between 12° and 28°. The average high for January 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 January weather will actually feel in Twin Falls. See also: February | March | April.