S
M
T
W
T
F
S
27
70°
45°
28
73°
51°
29
79°
46°
30
65°
59°
1
82°
60°
2
67°
46°
3
70°
43°
4
74°
47°
5
68°
45°
6
74°
41°
7
78°
53°
8
72°
48°
9
77°
46°
10
79°
50°
11
77°
55°
12
87°
53°
13
85°
64°
14
69°
59°
15
70°
56°
16
60°
44°
17
56°
36°
18
63°
36°
19
67°
36°
20
71°
38°
21
72°
40°
22
73°
43°
23
71°
42°
24
69°
42°
25
72°
46°
26
67°
49°
27
70°
52°
28
74°
53°
29
75°
53°
30
71°
51°
31
66°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Valparaiso
Valparaiso's October 2026 forecast shows daily high temperatures ranging from 66° to 75°, with overnight lows between 46° and 53°. The average high for October is 71° 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 Valparaiso. See also: November | December | January.