S
M
T
W
T
F
S
27
80°
55°
28
80°
58°
29
81°
60°
30
79°
57°
1
79°
58°
2
80°
57°
3
79°
58°
4
78°
58°
5
77°
53°
6
77°
53°
7
81°
58°
8
83°
56°
9
84°
59°
10
82°
56°
11
77°
55°
12
78°
56°
13
79°
57°
14
81°
55°
15
80°
57°
16
78°
58°
17
79°
53°
18
75°
52°
19
76°
53°
20
77°
52°
21
79°
50°
22
76°
47°
23
73°
48°
24
73°
49°
25
75°
51°
26
75°
48°
27
74°
48°
28
74°
50°
29
75°
53°
30
77°
51°
31
77°
52°
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 73° to 84°, with overnight lows between 47° and 60°. The average high for October is 78° with an average low of 54°. 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.
