S
M
T
W
T
F
S
27
66°
53°
28
68°
49°
29
63°
44°
30
64°
51°
1
65°
50°
2
62°
46°
3
67°
51°
4
70°
52°
5
72°
52°
6
69°
51°
7
69°
49°
8
66°
50°
9
67°
50°
10
66°
49°
11
68°
48°
12
67°
42°
13
56°
40°
14
55°
39°
15
54°
36°
16
54°
36°
17
55°
42°
18
55°
37°
19
54°
38°
20
53°
35°
21
52°
36°
22
54°
36°
23
55°
47°
24
65°
42°
25
67°
36°
26
57°
33°
27
51°
31°
28
49°
29°
29
47°
28°
30
47°
30°
31
48°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Rensselaer
Rensselaer's October 2026 forecast shows daily high temperatures ranging from 47° to 72°, with overnight lows between 28° and 53°. The average high for October is 60° with an average low of 42°. 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 Rensselaer. See also: November | December | January.