S
M
T
W
T
F
S
26
81°
58°
27
83°
63°
28
80°
72°
29
79°
68°
30
77°
66°
31
83°
64°
1
83°
72°
2
82°
74°
3
80°
68°
4
83°
63°
5
83°
63°
6
87°
76°
7
91°
73°
8
88°
72°
9
90°
74°
10
84°
70°
11
87°
71°
12
85°
72°
13
85°
71°
14
85°
67°
15
82°
66°
16
81°
65°
17
78°
68°
18
85°
69°
19
84°
69°
20
84°
65°
21
72°
64°
22
73°
66°
23
82°
68°
24
81°
59°
25
80°
62°
26
80°
68°
27
79°
71°
28
81°
67°
29
81°
67°
30
79°
70°
31
78°
66°
1
76°
66°
2
77°
65°
3
76°
64°
4
77°
63°
5
78°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Ronkonkoma
Ronkonkoma's August 2026 forecast shows daily high temperatures ranging from 76° to 81°, with overnight lows between 59° and 71°. The average high for August is 79° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Ronkonkoma. See also: September | October | November.
