S
M
T
W
T
F
S
27
69°
58°
28
79°
54°
29
81°
50°
30
70°
64°
1
68°
57°
2
69°
48°
3
73°
46°
4
74°
49°
5
76°
44°
6
80°
47°
7
81°
51°
8
78°
49°
9
81°
57°
10
85°
56°
11
85°
54°
12
87°
63°
13
76°
59°
14
68°
58°
15
64°
52°
16
54°
41°
17
59°
33°
18
67°
38°
19
70°
38°
20
71°
38°
21
75°
44°
22
78°
47°
23
76°
50°
24
74°
51°
25
75°
52°
26
72°
50°
27
66°
48°
28
63°
43°
29
60°
42°
30
59°
45°
31
57°
41°
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 57° to 78°, with overnight lows between 41° and 52°. The average high for October is 68° 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 Riverside. See also: November | December | January.
