S
M
T
W
T
F
S
27
80°
42°
28
69°
52°
29
75°
50°
30
75°
52°
1
79°
38°
2
78°
36°
3
63°
39°
4
64°
46°
5
66°
48°
6
72°
50°
7
75°
49°
8
73°
49°
9
69°
51°
10
75°
45°
11
73°
35°
12
62°
34°
13
59°
34°
14
57°
35°
15
59°
35°
16
60°
42°
17
60°
44°
18
65°
45°
19
69°
46°
20
68°
45°
21
67°
39°
22
69°
31°
23
64°
37°
24
58°
36°
25
61°
31°
26
62°
41°
27
60°
43°
28
Hist. Avg.
57°
35°
29
Hist. Avg.
57°
34°
30
Hist. Avg.
56°
34°
31
Hist. Avg.
56°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Walnut
Walnut's October 2026 forecast shows daily high temperatures ranging from 57° to 80°, with overnight lows between 31° and 52°. The average high for October is 67° with an average low of 42°. 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.
