S
M
T
W
T
F
S
27
78°
49°
28
79°
47°
29
82°
48°
30
69°
61°
1
69°
57°
2
69°
46°
3
72°
44°
4
74°
47°
5
75°
42°
6
77°
44°
7
81°
51°
8
75°
46°
9
75°
51°
10
85°
54°
11
83°
48°
12
90°
65°
13
79°
63°
14
69°
58°
15
65°
52°
16
58°
41°
17
58°
34°
18
66°
41°
19
70°
35°
20
72°
40°
21
74°
41°
22
77°
43°
23
74°
50°
24
73°
49°
25
76°
48°
26
72°
49°
27
70°
52°
28
70°
49°
29
68°
44°
30
62°
42°
31
57°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Walnut
Walnut's October 2026 forecast shows daily high temperatures ranging from 57° to 76°, with overnight lows between 41° and 52°. The average high for October is 69° with an average low of 47°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Walnut. See also: November | December | January.
