S
M
T
W
T
F
S
27
28°
21°
28
32°
25°
29
39°
25°
30
39°
29°
31
42°
29°
1
42°
21°
2
44°
15°
3
41°
11°
4
27°
10°
5
24°
15°
6
25°
20°
7
33°
17°
8
33°
19°
9
34°
14°
10
34°
7°
11
30°
9°
12
23°
4°
13
27°
3°
14
19°
5°
15
19°
8°
16
23°
11°
17
27°
15°
18
33°
15°
19
34°
20°
20
33°
21°
21
34°
22°
22
35°
21°
23
34°
19°
24
32°
18°
25
31°
20°
26
35°
20°
27
33°
23°
28
34°
19°
29
Hist. Avg.
35°
18°
30
Hist. Avg.
35°
18°
31
Hist. Avg.
35°
18°
1
Hist. Avg.
36°
18°
2
Hist. Avg.
36°
18°
3
Hist. Avg.
36°
18°
4
Hist. Avg.
36°
18°
5
Hist. Avg.
36°
19°
6
Hist. Avg.
37°
19°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
January Weather in Walnut
Walnut's January 2027 forecast shows daily high temperatures ranging from 19° to 44°, with overnight lows between 3° and 29°. The average high for January is 32° with an average low of 17°. 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.
