S
M
T
W
T
F
S
27
80°
60°
28
80°
59°
29
78°
59°
30
76°
58°
1
75°
57°
2
78°
52°
3
73°
47°
4
66°
46°
5
66°
48°
6
68°
46°
7
67°
43°
8
64°
45°
9
66°
48°
10
70°
55°
11
74°
52°
12
75°
44°
13
69°
45°
14
65°
42°
15
63°
42°
16
63°
43°
17
64°
46°
18
70°
42°
19
68°
49°
20
69°
49°
21
71°
48°
22
69°
50°
23
71°
50°
24
71°
49°
25
69°
49°
26
71°
44°
27
71°
38°
28
61°
38°
29
60°
44°
30
59°
46°
31
62°
39°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Adelphi
Adelphi's October 2026 forecast shows daily high temperatures ranging from 59° to 80°, with overnight lows between 38° and 60°. The average high for October is 69° with an average low of 48°. 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 Adelphi. See also: November | December | January.