S
M
T
W
T
F
S
27
78°
55°
28
77°
55°
29
77°
54°
30
76°
53°
1
75°
49°
2
69°
53°
3
75°
53°
4
76°
54°
5
74°
53°
6
73°
52°
7
74°
53°
8
73°
52°
9
73°
52°
10
72°
50°
11
72°
43°
12
59°
39°
13
58°
38°
14
58°
38°
15
57°
38°
16
57°
40°
17
58°
35°
18
55°
35°
19
55°
36°
20
56°
40°
21
55°
40°
22
55°
42°
23
71°
42°
24
70°
39°
25
59°
35°
26
56°
34°
27
51°
28°
28
49°
34°
29
51°
43°
30
53°
36°
31
58°
30°
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 49° to 78°, with overnight lows between 28° and 55°. The average high for October is 64° with an average low of 44°. 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.