S
M
T
W
T
F
S
27
63°
45°
28
65°
47°
29
66°
49°
30
75°
49°
1
78°
55°
2
78°
59°
3
65°
55°
4
65°
54°
5
67°
46°
6
65°
39°
7
72°
49°
8
73°
48°
9
72°
54°
10
61°
52°
11
66°
59°
12
67°
54°
13
76°
55°
14
72°
51°
15
73°
53°
16
75°
48°
17
63°
42°
18
56°
41°
19
62°
40°
20
64°
41°
21
63°
39°
22
59°
44°
23
56°
33°
24
56°
32°
25
57°
32°
26
62°
36°
27
64°
34°
28
57°
31°
29
54°
30°
30
54°
31°
31
61°
36°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Princeton
Princeton's October 2026 forecast shows daily high temperatures ranging from 54° to 76°, with overnight lows between 30° and 59°. The average high for October is 63° 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 Princeton. See also: November | December | January.
