S
M
T
W
T
F
S
27
67°
59°
28
62°
57°
29
72°
56°
30
70°
60°
1
74°
60°
2
79°
65°
3
72°
56°
4
63°
55°
5
71°
54°
6
61°
44°
7
65°
39°
8
76°
53°
9
73°
48°
10
68°
53°
11
68°
58°
12
70°
54°
13
70°
54°
14
64°
49°
15
62°
51°
16
68°
55°
17
67°
51°
18
59°
47°
19
62°
50°
20
60°
48°
21
60°
48°
22
61°
45°
23
57°
41°
24
56°
40°
25
56°
45°
26
62°
48°
27
64°
39°
28
54°
38°
29
53°
38°
30
54°
43°
31
60°
42°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Lake Ronkonkoma
Lake Ronkonkoma's October 2026 forecast shows daily high temperatures ranging from 53° to 73°, with overnight lows between 38° and 58°. The average high for October is 62° with an average low of 47°. 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 Lake Ronkonkoma. See also: November | December | January.
