S
M
T
W
T
F
S
27
78°
51°
28
79°
51°
29
80°
52°
30
80°
54°
1
78°
50°
2
79°
51°
3
83°
54°
4
86°
56°
5
86°
57°
6
85°
58°
7
82°
54°
8
84°
57°
9
81°
53°
10
84°
55°
11
83°
55°
12
77°
44°
13
73°
44°
14
74°
45°
15
73°
46°
16
74°
48°
17
75°
50°
18
74°
48°
19
75°
47°
20
77°
50°
21
73°
50°
22
78°
53°
23
78°
54°
24
79°
53°
25
79°
50°
26
77°
45°
27
78°
48°
28
74°
48°
29
72°
45°
30
76°
46°
31
76°
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 72° to 86°, with overnight lows between 44° and 58°. The average high for October is 78° with an average low of 51°. 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.
