S
M
T
W
T
F
S
27
93°
64°
28
86°
59°
29
86°
59°
30
84°
59°
1
83°
58°
2
81°
56°
3
81°
58°
4
88°
61°
5
89°
61°
6
89°
62°
7
88°
61°
8
88°
61°
9
87°
60°
10
87°
60°
11
86°
61°
12
86°
60°
13
85°
57°
14
77°
52°
15
76°
52°
16
76°
53°
17
77°
54°
18
76°
52°
19
75°
51°
20
77°
55°
21
81°
57°
22
80°
56°
23
79°
57°
24
75°
55°
25
77°
54°
26
77°
48°
27
75°
48°
28
76°
49°
29
75°
47°
30
75°
48°
31
77°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Riverside
Riverside's October 2026 forecast shows daily high temperatures ranging from 75° to 93°, with overnight lows between 47° and 64°. The average high for October is 81° with an average low of 56°. 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 Riverside. See also: November | December | January.
