S
M
T
W
T
F
S
28
33°
24°
29
24°
11°
30
26°
21°
31
33°
24°
1
26°
8°
2
16°
3°
3
16°
3°
4
15°
5°
5
34°
15°
6
36°
32°
7
34°
24°
8
32°
25°
9
43°
29°
10
39°
35°
11
39°
32°
12
41°
33°
13
46°
36°
14
43°
35°
15
39°
32°
16
40°
34°
17
37°
27°
18
30°
26°
19
32°
23°
20
30°
21°
21
29°
17°
22
35°
15°
23
30°
16°
24
28°
13°
25
27°
10°
26
39°
24°
27
41°
33°
28
43°
34°
29
41°
33°
30
38°
31°
31
39°
32°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Mendenhall Valley
Mendenhall Valley's January 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for January is ° with an average low of °. 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 Mendenhall Valley. See also: February | March | April.