S
M
T
W
T
F
S
27
86°
71°
28
81°
67°
29
83°
62°
30
83°
64°
1
85°
63°
2
103°
64°
3
105°
73°
4
105°
71°
5
104°
72°
6
104°
69°
7
102°
70°
8
100°
69°
9
100°
70°
10
94°
68°
11
89°
64°
12
90°
66°
13
88°
63°
14
87°
63°
15
88°
64°
16
83°
59°
17
85°
64°
18
87°
63°
19
85°
63°
20
85°
62°
21
84°
62°
22
85°
61°
23
85°
62°
24
84°
62°
25
85°
61°
26
84°
61°
27
80°
56°
28
74°
53°
29
75°
52°
30
76°
53°
31
75°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Brea Chem
Brea Chem's October 2026 forecast shows daily high temperatures ranging from 74° to 105°, with overnight lows between 52° and 73°. The average high for October is 89° with an average low of 63°. 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 Brea Chem. See also: November | December | January.
