S
M
T
W
T
F
S
27
32°
20°
28
31°
17°
29
32°
20°
30
31°
13°
31
32°
8°
1
26°
8°
2
23°
9°
3
24°
10°
4
24°
15°
5
29°
12°
6
29°
14°
7
30°
15°
8
32°
16°
9
32°
20°
10
32°
16°
11
32°
10°
12
26°
19°
13
29°
19°
14
34°
20°
15
36°
20°
16
36°
19°
17
35°
15°
18
30°
19°
19
29°
20°
20
34°
20°
21
36°
19°
22
35°
19°
23
35°
18°
24
33°
17°
25
35°
11°
26
31°
6°
27
22°
9°
28
23°
2°
29
24°
3°
30
21°
5°
31
22°
6°
1
22°
5°
2
34°
1°
3
29°
2°
4
18°
6°
5
29°
3°
6
30°
6°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in Walnut
Walnut's January 2027 forecast shows daily high temperatures ranging from 18° to 36°, with overnight lows between 1° and 20°. The average high for January is 30° with an average low of 13°. 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 Walnut. See also: February | March | April.
