S
M
T
W
T
F
S
27
64°
40°
28
64°
43°
29
65°
37°
30
62°
43°
1
62°
45°
2
68°
43°
3
62°
42°
4
65°
43°
5
67°
42°
6
66°
37°
7
61°
38°
8
60°
36°
9
62°
38°
10
58°
34°
11
66°
40°
12
67°
40°
13
Hist. Avg.
72°
43°
14
Hist. Avg.
72°
42°
15
Hist. Avg.
72°
42°
16
Hist. Avg.
72°
42°
17
Hist. Avg.
71°
42°
18
Hist. Avg.
71°
41°
19
Hist. Avg.
71°
41°
20
Hist. Avg.
70°
41°
21
Hist. Avg.
70°
41°
22
Hist. Avg.
70°
41°
23
Hist. Avg.
70°
40°
24
Hist. Avg.
69°
40°
25
Hist. Avg.
69°
40°
26
Hist. Avg.
69°
40°
27
Hist. Avg.
68°
40°
28
Hist. Avg.
68°
39°
29
Hist. Avg.
68°
39°
30
Hist. Avg.
68°
39°
31
Hist. Avg.
67°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Mount San Jacinto State Park
Mount San Jacinto State Park's October 2026 forecast shows daily high temperatures ranging from 58° to 68°, with overnight lows between 34° and 45°. The average high for October is 64° with an average low of 40°. 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 Mount San Jacinto State Park. See also: November | December | January.
