S
M
T
W
T
F
S
27
33°
15°
28
31°
11°
29
30°
12°
30
31°
27°
31
39°
21°
1
43°
17°
2
32°
14°
3
29°
10°
4
28°
17°
5
34°
29°
6
38°
32°
7
47°
21°
8
50°
14°
9
36°
13°
10
27°
15°
11
32°
12°
12
29°
10°
13
25°
10°
14
25°
12°
15
26°
13°
16
30°
15°
17
37°
23°
18
36°
18°
19
44°
13°
20
33°
12°
21
26°
18°
22
34°
25°
23
39°
27°
24
41°
30°
25
46°
31°
26
48°
29°
27
45°
28°
28
44°
26°
29
41°
22°
30
36°
23°
31
Hist. Avg.
37°
20°
1
Hist. Avg.
37°
20°
2
Hist. Avg.
38°
20°
3
Hist. Avg.
38°
20°
4
Hist. Avg.
38°
20°
5
Hist. Avg.
38°
20°
6
Hist. Avg.
38°
20°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Mammoth
Mammoth's January 2027 forecast shows daily high temperatures ranging from 25° to 50°, with overnight lows between 10° and 32°. The average high for January is 36° 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 Mammoth. See also: February | March | April.